1912:, which were suggested to be caused by a planetary companion. The 42-day period is close to the stellar rotation period, which made the possible planetary nature of the signal difficult to confirm. A 2018 study found that most evidence supports a planetary origin for the signal, but this has remained controversial, with a 2021 study characterizing the signal as a false positive. As of 2022, the cause of the radial velocity variations remained inconclusive.
54:
6034:
6082:
6106:
6058:
61:
6094:
1776:
6070:
3583:
Rosenthal, Lee J.; Fulton, Benjamin J.; Hirsch, Lea A.; Isaacson, Howard T.; Howard, Andrew W.; Dedrick, Cayla M.; Sherstyuk, Ilya A.; Blunt, Sarah C.; Petigura, Erik A.; Knutson, Heather A.; Behmard, Aida; Chontos, Ashley; Crepp, Justin R.; Crossfield, Ian J. M.; Dalba, Paul A.; Fischer, Debra A.;
3165:
Cifuentes, C.; Caballero, J. A.; Cortés-Contreras, M.; Montes, D.; Abellán, F. J.; Dorda, R.; Holgado, G.; Zapatero Osorio, M. R.; Morales, J. C.; Amado, P. J.; Passegger, V. M.; Quirrenbach, A.; Reiners, A.; Ribas, I.; Sanz-Forcada, J. (2020-10-01), "CARMENES input catalogue of M dwarfs. V.
2534:
Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars
Earlier than M0 within 40 pc-The Southern Sample".
2112:
2974:
Díaz, Matías R.; Jenkins, James S.; Tuomi, Mikko; Butler, R. Paul; Soto, Maritza G.; Teske, Johanna K.; Feng, Fabo; Shectman, Stephen A.; Arriagada, Pamela; Crane, Jeffrey D.; Thompson, Ian B.; Vogt, Steven S. (2018).
3943:
1805:
of spectral type M4.5e. When component B was a main-sequence star, it is thought to have been the most massive member of the system, but ejected most of its mass before it became a white dwarf. B and C
1670:, the first discovered. Although it is neither the closest white dwarf, nor the brightest in the night sky, it is by far the easiest to observe; it is nearly three magnitudes brighter than
3491:
Hessman, F.V.; Dhillon, V.S.; Winget, D.E.; Schreiber, M.R.; Horne, K.; Marsh, T.R.; et al. (2010). "On the naming convention used for multiple star systems and extrasolar planets".
3936:
2169:
1960:
orbits 40 Eridani A. Vulcan has been referenced in relation to the real-life search for exoplanets in this system. The hypothetical planet 40 Eridani A b is also mentioned in the book
1998:
3955:
3952:
3929:
4918:
1498:
1467:
1434:
3704:"Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions"
6206:
2591:
2436:
1370:
1069:
2587:
1666:
In 1910, it was discovered that although component B was a faint star, it was white in color. This meant that it had to be a small star; in fact it was a
3555:
1915:
Further studies in 2023 and 2024 concluded that the radial velocity signal very likely does originate from stellar activity, and not from a planet.
6196:
6156:
2635:
Holmberg, J.; et al. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics",
6176:
4911:
1938:, and lie considerably interior to the habitable zone, receiving nine times more stellar flux than Earth, which is an even greater amount than
3259:
Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008). "Improved Age
Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics".
1755:(WGSN) to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire
3888:
3586:"The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades"
2608:
Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data
Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)".
1858:
3584:
Henry, Gregory W.; Kane, Stephen R.; Kosiarek, Molly; Marcy, Geoffrey W.; Rubenzahl, Ryan A.; Weiss, Lauren M.; Wright, Jason T. (2021).
6136:
6131:
1656:
6166:
6037:
4904:
6161:
3562:
3534:
2432:
1715:
1425:
6181:
3034:
Provencal, J. L.; Shipman, H. L.; Høg, Erik; Thejll, P. (1998). "Testing the White Dwarf Mass-Radius
Relation with HIPPARCOS".
1752:
85:
6191:
3906:
3092:
4943:
2760:
1133:
6048:
1995:. The absolute magnitude of the Sun is 4.85, so, at a distance of 5.04 parsecs, the Sun would have an apparent magnitude
6151:
6126:
6004:
3969:
2796:
Mason, Brian D.; et al. (November 2017), "Binary Star Orbits. V. The Nearby White Dwarf/Red Dwarf Pair 40 Eri BC",
1536:
1509:
1471:
1429:
5413:
4765:
4755:
4742:
4396:
4712:
3845:
1540:
1513:
1475:
4732:
6201:
6186:
3823:
6146:
5233:
4938:
4127:
4078:
4055:
1723:
1525:
1503:
1463:
2517:
2401:
2266:
2107:{\displaystyle {\begin{smallmatrix}m\ =\ M_{v}\ +\ 5\cdot ((\log _{10}\ 5.04)\ -\ 1)\ =\ 3.36\end{smallmatrix}}}
1857:
from A. At this distance a planet would complete a revolution in 223 Earth days (according to the third of
4927:
4785:
3764:
3708:
2860:"The first super-Earth Detection from the High Cadence and High Radial Velocity Precision Dharma Planet Survey"
2126:
1984:
1826:
1598:
102:
1660:
6171:
5364:
4775:
3973:
3051:
1651:
whose two components are designated 40 Eridani B and C, and which were discovered on
January 31, 1783, by
1494:
1455:
936:
335:
298:
257:
1979:
From 40 Eridani the Sun would appear on the diametrically opposite side of the sky at the coordinates RA=
6141:
5577:
5281:
5165:
1695:
1691:
1613:
1530:
1488:
1449:
1421:
1378:
1259:
1077:
886:
3783:
3727:
3666:
3607:
3461:
3410:
3338:
3278:
3231:
3185:
3122:
3043:
2998:
2941:
2881:
2815:
2729:
2697:
2654:
2617:
2554:
2489:
2373:
2305:
2238:
1909:
1819:
1711:
846:
687:
586:
467:
5488:
5418:
4689:
3912:
3645:"The EXPRES Stellar Signals Project II. State of the Field in Disentangling Photospheric Velocities"
3530:
1869:
system would see the B-C pair as unusually bright white and reddish-orange stars in the night sky –
6110:
3760:"The Death of Vulcan: NEID Reveals That the Planet Candidate Orbiting HD 26965 Is Stellar Activity"
3056:
1459:
4872:
4825:
4815:
1578:
1569:
6098:
6086:
3773:
3717:
3684:
3656:
3625:
3597:
3492:
3434:
3426:
3356:
3328:
3294:
3268:
3175:
3140:
3069:
3016:
2988:
2977:"The test case of HD26965: Difficulties disentangling weak Doppler signals from stellar activity"
2931:
2871:
2833:
2805:
2670:
2644:
2570:
2544:
2507:
2479:
2391:
2363:
2321:
2295:
2256:
2228:
1957:
1870:
1590:
488:
235:
189:
143:
3921:
5986:
5519:
4962:
3884:
3850:
3201:
1961:
1850:
1815:
1811:
1699:
1629:
1606:
1417:
1157:
911:
837:
761:
78:
31:
6062:
5976:
5135:
5130:
5125:
5120:
5045:
4573:
4135:
3855:
3815:
3791:
3735:
3674:
3615:
3418:
3346:
3317:"Astrophysical Implications of a New Dynamical Mass for the Nearby White Dwarf 40 Eridani B"
3286:
3239:
3193:
3189:
3130:
3061:
3006:
2949:
2889:
2823:
2737:
2662:
2658:
2562:
2497:
2493:
2381:
2377:
2313:
2309:
2246:
2242:
1939:
1767:
on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.
1748:
1652:
1625:
1345:
1246:
1121:
1113:
1037:
671:
570:
451:
53:
1560:
4990:
4852:
4722:
4465:
4096:
3811:
3401:
Herschel, William (1785). "Catalogue of Double Stars. By
William Herschel, Esq. F. R. S".
3096:
1992:
1358:
1050:
819:
752:
612:
518:
392:
209:
163:
117:
35:
1865:
would appear nearly 20% wider than the Sun does on Earth. An observer on a planet in the
3787:
3731:
3670:
3611:
3465:
3414:
3342:
3282:
3235:
3126:
3047:
3002:
2945:
2885:
2819:
2733:
2701:
2621:
2558:
5981:
5963:
5025:
4086:
1842:
1409:
796:
735:
679:
659:
647:
578:
558:
546:
459:
439:
427:
6120:
5314:
5155:
5020:
5010:
5005:
4985:
4980:
4109:
4044:
4017:
3688:
3629:
3438:
3360:
3144:
3073:
3020:
2976:
2837:
2674:
2574:
2511:
2395:
2260:
1988:
1983:, Dec=07° 39′ 10.34″, which is located near the border of
1830:
1791:
1784:
1756:
1594:
636:
535:
416:
367:
96:
3298:
2325:
1888:
because they would have been sterilized by its evolution into a white dwarf. As for
6074:
5940:
5935:
5514:
5115:
5110:
5105:
5100:
5095:
5090:
5085:
5080:
5075:
5070:
5065:
5060:
5015:
4995:
4975:
4857:
4626:
4335:
4269:
4265:
4261:
4257:
1919:
1671:
1320:
1279:
1226:
1192:
1010:
969:
3379:
3197:
2688:
Evans, D. S (1967). "The
Revision of the General Catalogue of Radial Velocities".
2666:
2502:
2463:
2386:
2347:
2251:
2212:
1892:, it is prone to flares, which cause large momentary increases in the emission of
3089:
2610:
VizieR On-line Data
Catalog: B/GCVS. Originally Published in: 2009yCat....102025S
2317:
6017:
5910:
5524:
5150:
5145:
5140:
5000:
4807:
4704:
4681:
4672:
4637:
4353:
4190:
4161:
3512:
2595:
2004:
1795:
1667:
1648:
1099:
865:
357:
346:
320:
309:
279:
268:
223:
177:
131:
3796:
3759:
3740:
3703:
3679:
3644:
3620:
3585:
3351:
3316:
3011:
2828:
2772:
2440:
6012:
5930:
5915:
5549:
5544:
5539:
5534:
5529:
5428:
5271:
5256:
5251:
5223:
5218:
5213:
5208:
5203:
5198:
5193:
5188:
5183:
5178:
5173:
5055:
5040:
5035:
5030:
4645:
4596:
4560:
4541:
4531:
4521:
4511:
4485:
4475:
4442:
4429:
4419:
4386:
4340:
4324:
4301:
4246:
4174:
1942:, the innermost planet in the Solar System, on average receives from the Sun.
1929:
1802:
1787:
1633:
1293:
1239:
1206:
1023:
983:
908:
694:
593:
474:
379:
372:
3205:
5971:
5809:
5506:
5448:
5423:
5334:
5329:
5294:
5289:
4896:
4455:
4314:
4295:
4221:
3859:
2954:
2919:
2894:
2859:
1952:
1799:
17:
3422:
5945:
5894:
5889:
5884:
5879:
5874:
5869:
5864:
5859:
5854:
5849:
5844:
5839:
5834:
5829:
5824:
5819:
5814:
5804:
5799:
5794:
5789:
5784:
5779:
5774:
5769:
5764:
5759:
5754:
5749:
5744:
5739:
5734:
5729:
5724:
5719:
5714:
5709:
5704:
5699:
5694:
5689:
5684:
5679:
5674:
5669:
5664:
5659:
5654:
5649:
5644:
5639:
5634:
5629:
5585:
5554:
5458:
5453:
5397:
5392:
5387:
5382:
5377:
5372:
5349:
5344:
5339:
5324:
5319:
5309:
5304:
5299:
5266:
5261:
5246:
4970:
4002:
2549:
1878:
1744:
1402:
1171:
3452:
Van Den Bos, W. H. (1926). "The orbit and the masses of 40 Eridani BC".
5925:
5920:
5624:
5619:
5614:
5483:
5478:
5473:
5468:
5463:
5443:
5438:
5433:
5354:
5241:
4583:
4501:
4406:
4376:
4284:
4274:
4233:
4203:
3819:
1825:
As seen from the 40 Eridani system, the Sun is a 3.4-magnitude star in
1775:
1675:
88:
81:
3430:
5599:
5568:
4363:
4063:
3702:
Laliotis, Katherine; Burt, Jennifer A.; et al. (February 2023).
3220:"Predicted infrared brightness of stars within 25 parsecs of the sun"
2920:"Precision angular diameters for 16 southern stars with VLTI/PIONIER"
2521:
2405:
2286:
van
Leeuwen, F. (2007). "Validation of the new Hipparcos reduction".
2270:
1734:
1679:
1554:
1385:
1306:
1266:
1219:
1091:
996:
699:
598:
479:
60:
3111:"The Temperature Scale and Mass Distribution of Hot DA White Dwarfs"
6069:
3778:
3722:
3661:
3602:
3333:
3290:
3244:
3219:
3180:
3135:
3110:
3065:
2993:
2936:
2876:
2810:
2741:
2720:
Heintz, W. D. (1974). "Astrometric study of four visual binaries".
2566:
2484:
2368:
2233:
4552:
3497:
3273:
2649:
2300:
1897:
1893:
1874:
1807:
1774:
1643:
The primary star of the system, designated 40 Eridani A and named
768:
707:
1814:
from the primary star, A. Their orbit has a semimajor axis of 35
1674:, the nearest solitary white dwarf, and unlike the companions of
4953:
1849:
where a planet could exist with liquid water, is near 0.68
1393:
810:
743:
663:
651:
562:
550:
443:
431:
4900:
3925:
3758:
Burrows, Abigail; Halverson, Samuel; et al. (April 2024).
1637:
2468:
Data
Release 3. Summary of the content and survey properties"
2352:
Data Release 3. Summary of the content and survey properties"
2217:
Data Release 3. Summary of the content and survey properties"
3099:, Jim Kaler, STARS web page, accessed 15/5/2007, 10/12/2011.
1798:
of spectral type DA4, and 40 Eridani C is an 11th magnitude
3166:
Luminosities, colours, and spectral energy distributions",
1682:
it is not swamped in the glare of a much brighter primary.
3454:
Bulletin of the Astronomical Institutes of the Netherlands
3315:
Bond, Howard E.; Bergeron, P.; Bédard, A. (October 2017).
4119:
3 (6?) planets: b, c?, d (c), e?, f?, g?, d
3403:
Philosophical Transactions of the Royal Society of London
2690:
Determination of Radial Velocities and Their Applications
1647:, is easily visible to the naked eye. It is orbited by a
3556:
Working Group on Star Names Triennial Report (2015-2018)
3109:
Finley, David S.; Koester, Detlev; Basri, Gibor (1997).
2462:
Vallenari, A.; et al. (Gaia collaboration) (2023).
2346:
Vallenari, A.; et al. (Gaia collaboration) (2023).
2211:
Vallenari, A.; et al. (Gaia collaboration) (2023).
6046:
2129:
2001:
1873:−8 and −6, slightly brighter than the appearance of
1738:
6003:
5962:
5903:
5607:
5598:
5576:
5567:
5505:
5406:
5363:
5280:
5232:
5164:
4961:
4952:
4865:
4851:
4806:
4703:
4680:
4671:
4636:
4625:
4220:
4126:
4077:
4054:
4043:
4010:
4001:
3967:
1884:It is unlikely that habitable planets exist around
3846:"Spock's home world has been discovered (sort of)"
3310:
3308:
2163:
2106:
1896:as well as visible light. This would be lethal to
2924:Monthly Notices of the Royal Astronomical Society
2864:Monthly Notices of the Royal Astronomical Society
1706:B and C – derive from the convention used by the
4200:2 K-type main-sequence stars: B, C
3481:, E. Schatzman, Amsterdam: North-Holland, 1958.
27:Triple star system in the constellation Eridanus
3753:
3751:
1964:as the home of the eponymous Eridian species.
4912:
3937:
3160:
3158:
3156:
3154:
2588:General Catalogue of Trigonometric Parallaxes
1751:(Arabic "egg"). In 2016, the IAU organized a
229:−07° 39′ 20.6946″
183:−07° 39′ 29.2040″
137:−07° 39′ 10.3308″
8:
2913:
2911:
2909:
2907:
2905:
2853:
2851:
2849:
2847:
2791:
2789:
3883:. New York: Ballantine Books. p. 238.
3590:The Astrophysical Journal Supplement Series
2969:
2967:
2965:
1900:-type life on planets near the flare star.
1702:. The designations of the sub-components –
6000:
5959:
5604:
5573:
5502:
4958:
4919:
4905:
4897:
4862:
4848:
4677:
4668:
4633:
4622:
4051:
4040:
4007:
3998:
3979:
3964:
3956:Celestial objects within 15–20 light-years
3944:
3930:
3922:
3374:
3372:
3370:
2918:Rains, Adam D.; et al. (April 2020).
2457:
2455:
2453:
2451:
2449:
2341:
2339:
2337:
2335:
2206:
2204:
2202:
2200:
2198:
3795:
3777:
3739:
3721:
3678:
3660:
3619:
3601:
3496:
3350:
3332:
3272:
3243:
3179:
3134:
3055:
3010:
2992:
2953:
2935:
2893:
2875:
2827:
2809:
2715:
2713:
2711:
2648:
2548:
2501:
2483:
2385:
2367:
2299:
2250:
2232:
2164:{\displaystyle \ h={\frac {\ a\ }{d}}\,,}
2157:
2139:
2128:
2054:
2023:
2002:
2000:
6207:Objects with variable star designations
6053:
3915:entry at the Internet Stellar Database.
3224:Astrophysical Journal Supplement Series
3085:
3083:
2194:
1972:
643:
542:
423:
3218:Johnson, H. M.; Wright, C. D. (1983).
1918:The candidate planet would have had a
40:
2755:
2753:
2751:
2281:
2279:
1729:The system bore the traditional name
7:
3826:from the original on August 29, 2009
3531:"Working Group on Star Names (WGSN)"
2428:
2426:
2424:
2422:
2420:
2418:
2416:
2414:
1794:K1, 40 Eridani B is a 9th magnitude
84:
3643:Zhao, Lily L.; et al. (2022).
2179:is the distance of the object, and
655:
554:
435:
25:
2183:is the actual size of the object.
2003:
1818:and is rather elliptical with an
678:199.4516 ± 0.0692
577:199.6911 ± 0.0512
458:199.6080 ± 0.1208
6104:
6092:
6080:
6068:
6056:
6033:
6032:
4570:2? planets: b?, c?
4350:2? planets: b?, c?
4243:2 red dwarfs: B, C
4184:2 red dwarfs: B, C
4171:K-type main-sequence star B
4106:K-type main-sequence star B
3563:International Astronomical Union
3535:International Astronomical Union
2433:Gliese Catalogue of Nearby Stars
1991:, the closest bright star being
1716:International Astronomical Union
70:Location of 40 Eridani (circled)
59:
52:
4498:2 planets: Ab, Ac
2518:Gaia DR3 record for this source
2402:Gaia DR3 record for this source
2267:Gaia DR3 record for this source
1708:Washington Multiplicity Catalog
1620:and abbreviated Omicron Eri or
6197:Henry Draper Catalogue objects
6157:Hypothetical planetary systems
2084:
2069:
2047:
2044:
1:
6177:Bright Star Catalogue objects
4944:Eridanus in Chinese astronomy
4416:2 planets: b, c
3984:Celestial objects by systems.
2435:, preliminary 3rd ed., 1991.
1810:each other approximately 400
1747:," alluding to its neighbour
1698:to Omicron Eridani) its
3844:Clery, Daniel (2018-09-18).
2858:Ma, Bo; et al. (2018).
1908:40 Eridani A shows periodic
3198:10.1051/0004-6361/202038295
2667:10.1051/0004-6361/200811191
2503:10.1051/0004-6361/202243940
2387:10.1051/0004-6361/202243940
2252:10.1051/0004-6361/202243940
1779:Amateur photo of 40 Eridani
1753:Working Group on Star Names
1739:
1690:40 Eridani is the system's
1655:. It was again observed by
6223:
6137:M-type main-sequence stars
6132:K-type main-sequence stars
3168:Astronomy and Astrophysics
2637:Astronomy and Astrophysics
2472:Astronomy and Astrophysics
2356:Astronomy and Astrophysics
2318:10.1051/0004-6361:20078357
2288:Astronomy and Astrophysics
2221:Astronomy and Astrophysics
1910:radial velocity variations
1632:mission, it is about 16.3
1628:measurements taken by the
30:For other stars with this
29:
6030:
5999:
5958:
5501:
4939:List of stars in Eridanus
4934:
4928:Constellation of Eridanus
4847:
4752:T-type brown dwarf B
4667:
4621:
4495:T-type brown dwarf B
4294:2 planets:
4256:4 planets:
4187:T-type brown dwarf D
4039:
3997:
3982:
3963:
3321:The Astrophysical Journal
3261:The Astrophysical Journal
3115:The Astrophysical Journal
3036:The Astrophysical Journal
1724:variable star designation
1547:
1520:
1482:
1443:
1415:
1408:
1272:
1185:
1181:
1177:
962:
957:
767:
706:
605:
511:
507:
503:
385:
378:
329:
292:
288:
251:
246:
200:
154:
108:
75:
46:
6167:Eridanus (constellation)
4097:Achird (Eta Cassiopeiae)
3797:10.3847/1538-3881/ad34d5
3765:The Astronomical Journal
3741:10.3847/1538-3881/acc067
3709:The Astronomical Journal
3680:10.3847/1538-3881/ac5176
3649:The Astronomical Journal
3621:10.3847/1538-4365/abe23c
3517:stars.astro.illinois.edu
3352:10.3847/1538-4357/aa8a63
3012:10.3847/1538-3881/aaa896
2981:The Astronomical Journal
2829:10.3847/1538-3881/aa803e
2798:The Astronomical Journal
2537:The Astronomical Journal
2175:is the apparent height,
1985:Hercules (constellation)
6162:Stars with proper names
5414:2MASS J04151954−0935066
4087:Alsafi (Sigma Draconis)
3860:10.1126/science.aav4653
3190:2020A&A...642A.115C
2659:2009A&A...501..941H
2494:2023A&A...674A...1G
2378:2023A&A...674A...1G
2310:2007A&A...474..653V
2243:2023A&A...674A...1G
1877:seen from Earth as the
1829:, near the border with
1759:. It approved the name
489:Absolute magnitude
236:Apparent magnitude
190:Apparent magnitude
144:Apparent magnitude
6182:Durchmusterung objects
4064:Altair (Alpha Aquilae)
3423:10.1098/rstl.1785.0006
2165:
2108:
1956:franchise, the planet
1780:
937:Argument of periastron
658: −3,409.824
646: −2,247.183
557: −3,338.955
545: −2,236.169
438: −3,421.809
426: −2,240.085
6192:Gliese and GJ objects
5550:HD 30856 Ab (Nakanbé)
3909:at Jim Kaler's STARS.
2955:10.1093/mnras/staa282
2895:10.1093/mnras/sty1933
2166:
2109:
1778:
1714:, and adopted by the
1712:multiple star systems
1694:and ο² Eridani (
1692:Flamsteed designation
887:Longitude of the node
5474:WASP-50 (Chaophraya)
4146:Omicron (40) Eridani
2775:on 30 September 2023
2722:Astronomical Journal
2127:
1999:
1820:orbital eccentricity
698:(5.014 ± 0.002
693:16.353 ± 0.006
597:(5.008 ± 0.001
592:16.333 ± 0.004
478:(5.010 ± 0.003
473:16.340 ± 0.010
6152:Triple star systems
6127:Emission-line stars
6005:Astronomical events
5520:ε Eridani b (AEgir)
3879:Weir, Andy (2021).
3788:2024AJ....167..243B
3732:2023AJ....165..176L
3671:2022AJ....163..171Z
3612:2021ApJS..255....8R
3466:1926BAN.....3..128V
3415:1785RSPT...75...40H
3343:2017ApJ...848...16B
3283:2008ApJ...687.1264M
3236:1983ApJS...53..643J
3127:1997ApJ...488..375F
3048:1998ApJ...494..759P
3003:2018AJ....155..126D
2946:2020MNRAS.493.2377R
2886:2018MNRAS.480.2411M
2820:2017AJ....154..200M
2765:(Omicron² Eridani)"
2734:1974AJ.....79..819H
2702:1967IAUS...30...57E
2622:2009yCat....102025S
2559:2006AJ....132..161G
1548:Database references
1134:Rotational velocity
43:
5555:WASP-79b (Pollera)
5535:HD 18742 b (Bagan)
5373:18742 (Ayeyarwady)
4439:white dwarf B
4155:white dwarf B
3958:
3913:Omicron(2) Eridani
3533:. Working Groups.
3095:2007-05-14 at the
2161:
2104:
2102:
2101:
1904:Search for planets
1837:Potential for life
1783:40 Eridani A is a
1781:
1763:for the component
1591:triple star system
1410:Other designations
368:Variable type
336:Spectral type
299:Spectral type
258:Spectral type
42:40 Eridani / Keid
41:
6202:Hipparcos objects
6187:Flamsteed objects
6044:
6043:
6026:
6025:
5995:
5994:
5987:MACS J0416.1-2403
5954:
5953:
5594:
5593:
5563:
5562:
5497:
5496:
5484:WASP-79 (Montuno)
5449:HIP 12961 (Koeia)
4894:
4893:
4890:
4889:
4886:
4885:
4843:
4842:
4839:
4838:
4663:
4662:
4659:
4658:
4617:
4616:
4613:
4612:
4110:e (82 G.) Eridani
4035:
4034:
4031:
4030:
3993:
3992:
3989:
3988:
3890:978-0-593-13520-4
3881:Project Hail Mary
3565:. 2018. p. 5
2590:, 4th ed., 1995.
2155:
2150:
2144:
2132:
2095:
2089:
2080:
2074:
2065:
2037:
2031:
2018:
2012:
1962:Project Hail Mary
1733:derived from the
1726:DY Eridani.
1700:Bayer designation
1672:Van Maanen's Star
1607:Bayer designation
1584:
1583:
32:Bayer designation
16:(Redirected from
6214:
6147:Solar-type stars
6109:
6108:
6107:
6097:
6096:
6095:
6085:
6084:
6083:
6073:
6072:
6061:
6060:
6059:
6052:
6036:
6035:
6001:
5977:Eridanus Cluster
5960:
5605:
5574:
5503:
4959:
4921:
4914:
4907:
4898:
4878:
4863:
4853:Sub-brown dwarfs
4849:
4831:
4821:
4798:
4797:
4796:
4781:
4771:
4761:
4748:
4738:
4728:
4718:
4695:
4678:
4669:
4651:
4634:
4623:
4606:red dwarf B
4602:
4593:red dwarf B
4589:
4579:
4574:YZ Canis Minoris
4566:
4547:
4537:
4527:
4517:
4507:
4491:
4481:
4471:
4461:
4448:
4435:
4425:
4412:
4402:
4392:
4382:
4373:red dwarf B
4369:
4359:
4346:
4330:
4320:
4311:red dwarf B
4307:
4290:
4280:
4252:
4239:
4226:
4213:red dwarf B
4209:
4196:
4180:
4167:
4158:red dwarf C
4151:
4141:
4136:Groombridge 1618
4115:
4102:
4092:
4069:
4052:
4041:
4023:
4008:
3999:
3980:
3976:
3971:
3965:
3946:
3939:
3932:
3923:
3895:
3894:
3876:
3870:
3869:
3867:
3866:
3841:
3835:
3834:
3832:
3831:
3816:Gene Roddenberry
3808:
3802:
3801:
3799:
3781:
3755:
3746:
3745:
3743:
3725:
3699:
3693:
3692:
3682:
3664:
3640:
3634:
3633:
3623:
3605:
3580:
3574:
3573:
3571:
3570:
3560:
3552:
3546:
3545:
3543:
3541:
3527:
3521:
3520:
3509:
3503:
3502:
3500:
3488:
3482:
3476:
3470:
3469:
3449:
3443:
3442:
3398:
3392:
3391:
3389:
3387:
3376:
3365:
3364:
3354:
3336:
3312:
3303:
3302:
3276:
3267:(2): 1264–1293.
3256:
3250:
3249:
3247:
3215:
3209:
3208:
3183:
3162:
3149:
3148:
3138:
3106:
3100:
3087:
3078:
3077:
3059:
3031:
3025:
3024:
3014:
2996:
2971:
2960:
2959:
2957:
2939:
2930:(2): 2377–2394.
2915:
2900:
2899:
2897:
2879:
2855:
2842:
2841:
2831:
2813:
2793:
2784:
2783:
2781:
2780:
2771:. Archived from
2764:
2757:
2746:
2745:
2717:
2706:
2705:
2685:
2679:
2678:
2652:
2632:
2626:
2625:
2605:
2599:
2585:
2579:
2578:
2552:
2550:astro-ph/0603770
2531:
2525:
2515:
2505:
2487:
2459:
2444:
2430:
2409:
2399:
2389:
2371:
2343:
2330:
2329:
2303:
2283:
2274:
2264:
2254:
2236:
2208:
2184:
2182:
2178:
2174:
2170:
2168:
2167:
2162:
2156:
2151:
2148:
2142:
2140:
2130:
2121:
2115:
2113:
2111:
2110:
2105:
2103:
2093:
2087:
2078:
2072:
2063:
2059:
2058:
2035:
2029:
2028:
2027:
2016:
2010:
1982:
1977:
1937:
1927:
1891:
1887:
1868:
1864:
1855:
1854:
1848:
1766:
1757:multiple systems
1742:
1721:
1705:
1657:Friedrich Struve
1653:William Herschel
1534:
1507:
1492:
1453:
1438:
1343:
1341:
1318:
1316:
1291:
1289:
1204:
1202:
1169:
1167:
1150:
1127:~37–43 days
1111:
1109:
1089:
1087:
1067:
1065:
1035:
1033:
1008:
1006:
981:
979:
952:
950:
941:
929:
927:
923:
916:
900:
898:
891:
878:
876:
859:
857:
833:
831:
824:
809:
807:
757:
657:
645:
629:
627:
556:
544:
437:
425:
409:
407:
247:Characteristics
239:
217:
193:
171:
147:
125:
76:Observation data
63:
56:
44:
21:
6222:
6221:
6217:
6216:
6215:
6213:
6212:
6211:
6117:
6116:
6115:
6105:
6103:
6093:
6091:
6081:
6079:
6067:
6057:
6055:
6047:
6045:
6040:
6022:
5991:
5964:Galaxy clusters
5950:
5899:
5590:
5559:
5493:
5489:WISE J0336−0143
5464:WASP-22 (Tojil)
5419:DENIS 0255−4700
5402:
5393:30856 (Mouhoun)
5359:
5276:
5228:
5160:
4948:
4930:
4925:
4895:
4882:
4876:
4855:
4835:
4829:
4819:
4802:
4795:
4792:
4791:
4790:
4789:
4786:2MASS 0937+2931
4779:
4769:
4766:2MASS 0415-0935
4759:
4756:2MASS 1114-2618
4746:
4743:2MASS 0939-2448
4736:
4733:DENIS 0817-6155
4726:
4716:
4699:
4693:
4690:DENIS 0255−4700
4655:
4649:
4628:
4609:
4600:
4587:
4577:
4564:
4551:red dwarf
4545:
4535:
4525:
4515:
4505:
4489:
4479:
4469:
4459:
4446:
4433:
4423:
4410:
4400:
4390:
4380:
4367:
4357:
4344:
4328:
4318:
4305:
4288:
4278:
4250:
4237:
4224:
4223:
4216:
4207:
4194:
4178:
4165:
4149:
4139:
4122:
4113:
4100:
4090:
4073:
4067:
4046:
4027:
4021:
3985:
3968:
3959:
3950:
3919:
3903:
3898:
3891:
3878:
3877:
3873:
3864:
3862:
3843:
3842:
3838:
3829:
3827:
3812:Sallie Baliunas
3810:
3809:
3805:
3757:
3756:
3749:
3701:
3700:
3696:
3642:
3641:
3637:
3582:
3581:
3577:
3568:
3566:
3558:
3554:
3553:
3549:
3539:
3537:
3529:
3528:
3524:
3511:
3510:
3506:
3490:
3489:
3485:
3477:
3473:
3451:
3450:
3446:
3400:
3399:
3395:
3385:
3383:
3378:
3377:
3368:
3314:
3313:
3306:
3258:
3257:
3253:
3217:
3216:
3212:
3164:
3163:
3152:
3108:
3107:
3103:
3097:Wayback Machine
3088:
3081:
3033:
3032:
3028:
2973:
2972:
2963:
2917:
2916:
2903:
2857:
2856:
2845:
2795:
2794:
2787:
2778:
2776:
2762:
2759:
2758:
2749:
2719:
2718:
2709:
2687:
2686:
2682:
2634:
2633:
2629:
2607:
2606:
2602:
2586:
2582:
2533:
2532:
2528:
2461:
2460:
2447:
2431:
2412:
2345:
2344:
2333:
2285:
2284:
2277:
2210:
2209:
2196:
2192:
2187:
2180:
2176:
2172:
2141:
2125:
2124:
2122:
2118:
2100:
2099:
2050:
2019:
1997:
1996:
1993:Alpha Serpentis
1980:
1978:
1974:
1970:
1948:
1935:
1925:
1923:
1906:
1889:
1885:
1866:
1862:
1852:
1851:
1846:
1839:
1773:
1764:
1743:) meaning "the
1722:also bears the
1719:
1703:
1688:
1659:in 1825 and by
1610:Omicron Eridani
1529:
1502:
1487:
1448:
1439:
1433:
1400:
1359:Surface gravity
1351:
1348:
1339:
1337:
1326:
1323:
1314:
1312:
1299:
1296:
1287:
1285:
1252:
1249:
1232:
1229:
1212:
1209:
1200:
1198:
1165:
1163:
1148:
1140: sin
1107:
1105:
1085:
1083:
1063:
1061:
1051:Surface gravity
1043:
1040:
1031:
1029:
1016:
1013:
1004:
1002:
989:
986:
977:
975:
948:
946:
942:
934:
925:
921:
919:
906:
896:
894:
884:
874:
872:
855:
853:
835:
829:
827:
820:Semi-major axis
817:
805:
803:
753:Semi-major axis
750:
697:
654:
625:
623:
618:
613:Radial velocity
596:
553:
524:
519:Radial velocity
494:
477:
434:
405:
403:
398:
393:Radial velocity
234:
215:
210:Right ascension
188:
169:
164:Right ascension
142:
123:
118:Right ascension
77:
71:
69:
68:
67:
66:
65:
64:
39:
28:
23:
22:
15:
12:
11:
5:
6220:
6218:
6210:
6209:
6204:
6199:
6194:
6189:
6184:
6179:
6174:
6169:
6164:
6159:
6154:
6149:
6144:
6139:
6134:
6129:
6119:
6118:
6114:
6113:
6101:
6089:
6077:
6065:
6042:
6041:
6031:
6028:
6027:
6024:
6023:
6021:
6020:
6015:
6009:
6007:
5997:
5996:
5993:
5992:
5990:
5989:
5984:
5982:Eridanus Group
5979:
5974:
5968:
5966:
5956:
5955:
5952:
5951:
5949:
5948:
5943:
5938:
5933:
5928:
5923:
5918:
5913:
5907:
5905:
5901:
5900:
5898:
5897:
5892:
5887:
5882:
5877:
5872:
5867:
5862:
5857:
5852:
5847:
5842:
5837:
5832:
5827:
5822:
5817:
5812:
5807:
5802:
5797:
5792:
5787:
5782:
5777:
5772:
5767:
5762:
5757:
5752:
5747:
5742:
5737:
5732:
5727:
5722:
5717:
5712:
5707:
5702:
5697:
5692:
5687:
5682:
5677:
5672:
5667:
5662:
5657:
5652:
5647:
5642:
5637:
5632:
5627:
5622:
5617:
5611:
5609:
5602:
5596:
5595:
5592:
5591:
5589:
5588:
5582:
5580:
5571:
5565:
5564:
5561:
5560:
5558:
5557:
5552:
5547:
5542:
5537:
5532:
5527:
5522:
5517:
5511:
5509:
5499:
5498:
5495:
5494:
5492:
5491:
5486:
5481:
5476:
5471:
5466:
5461:
5456:
5451:
5446:
5441:
5436:
5431:
5426:
5421:
5416:
5410:
5408:
5404:
5403:
5401:
5400:
5395:
5390:
5385:
5380:
5375:
5369:
5367:
5361:
5360:
5358:
5357:
5352:
5347:
5342:
5337:
5332:
5327:
5322:
5317:
5312:
5307:
5302:
5297:
5292:
5286:
5284:
5278:
5277:
5275:
5274:
5269:
5264:
5259:
5254:
5249:
5244:
5238:
5236:
5230:
5229:
5227:
5226:
5221:
5216:
5211:
5206:
5201:
5196:
5191:
5186:
5181:
5176:
5170:
5168:
5162:
5161:
5159:
5158:
5153:
5148:
5143:
5138:
5133:
5128:
5123:
5118:
5113:
5108:
5103:
5098:
5093:
5088:
5083:
5078:
5073:
5068:
5063:
5058:
5053:
5048:
5043:
5038:
5033:
5028:
5023:
5018:
5013:
5008:
5003:
4998:
4993:
4988:
4983:
4978:
4973:
4967:
4965:
4956:
4950:
4949:
4947:
4946:
4941:
4935:
4932:
4931:
4926:
4924:
4923:
4916:
4909:
4901:
4892:
4891:
4888:
4887:
4884:
4883:
4881:
4880:
4873:WISE 1541−2250
4869:
4867:
4860:
4845:
4844:
4841:
4840:
4837:
4836:
4834:
4833:
4826:WISE 0350−5658
4823:
4816:WISE 1639−6847
4812:
4810:
4804:
4803:
4801:
4800:
4793:
4783:
4773:
4763:
4753:
4750:
4740:
4730:
4723:WISE 1506+7027
4720:
4713:WISE 1741+2553
4709:
4707:
4701:
4700:
4698:
4697:
4686:
4684:
4675:
4665:
4664:
4661:
4660:
4657:
4656:
4654:
4653:
4642:
4640:
4631:
4619:
4618:
4615:
4614:
4611:
4610:
4608:
4607:
4604:
4594:
4591:
4581:
4571:
4568:
4558:
4557:planet Ab
4555:
4549:
4539:
4529:
4519:
4509:
4499:
4496:
4493:
4483:
4473:
4466:LSR J1835+3259
4463:
4453:
4450:
4440:
4437:
4427:
4417:
4414:
4404:
4394:
4384:
4374:
4371:
4361:
4351:
4348:
4338:
4332:
4322:
4312:
4309:
4299:
4292:
4282:
4272:
4254:
4244:
4241:
4230:
4228:
4218:
4217:
4215:
4214:
4211:
4201:
4198:
4188:
4185:
4182:
4172:
4169:
4159:
4156:
4153:
4143:
4132:
4130:
4124:
4123:
4121:
4120:
4117:
4107:
4104:
4094:
4083:
4081:
4075:
4074:
4072:
4071:
4060:
4058:
4049:
4037:
4036:
4033:
4032:
4029:
4028:
4026:
4025:
4014:
4012:
4005:
4003:Subgiant stars
3995:
3994:
3991:
3990:
3987:
3986:
3983:
3977:
3961:
3960:
3951:
3949:
3948:
3941:
3934:
3926:
3917:
3916:
3910:
3902:
3901:External links
3899:
3897:
3896:
3889:
3871:
3836:
3820:"Vulcan's Sun"
3818:; et al.
3803:
3747:
3694:
3635:
3575:
3547:
3522:
3504:
3483:
3471:
3444:
3393:
3380:"Naming Stars"
3366:
3304:
3291:10.1086/591785
3251:
3245:10.1086/190905
3210:
3150:
3136:10.1086/304668
3121:(1): 375–396.
3101:
3079:
3066:10.1086/305238
3057:10.1.1.44.7051
3026:
2961:
2901:
2843:
2785:
2769:solstation.com
2747:
2742:10.1086/111614
2707:
2680:
2643:(3): 941–947,
2627:
2600:
2580:
2567:10.1086/504637
2543:(1): 161–170.
2526:
2445:
2410:
2331:
2294:(2): 653–664.
2275:
2193:
2191:
2188:
2186:
2185:
2160:
2154:
2147:
2138:
2135:
2116:
2098:
2092:
2086:
2083:
2077:
2071:
2068:
2062:
2057:
2053:
2049:
2046:
2043:
2040:
2034:
2026:
2022:
2015:
2009:
2006:
2005:
1971:
1969:
1966:
1947:
1944:
1933:
1905:
1902:
1843:habitable zone
1838:
1835:
1772:
1769:
1687:
1684:
1601:, abbreviated
1582:
1581:
1576:
1573:
1572:
1567:
1564:
1563:
1558:
1550:
1549:
1545:
1544:
1533:−07°781 C
1518:
1517:
1501: 131065,
1480:
1479:
1470: 131063,
1441:
1440:
1416:
1413:
1412:
1406:
1405:
1397:
1389:
1388:
1382:
1374:
1373:
1367:
1354:
1353:
1349:
1346:
1335:
1329:
1328:
1324:
1321:
1310:
1302:
1301:
1297:
1294:
1283:
1275:
1274:
1270:
1269:
1263:
1255:
1254:
1250:
1247:
1243:
1235:
1234:
1230:
1227:
1223:
1215:
1214:
1210:
1207:
1196:
1188:
1187:
1183:
1182:
1179:
1178:
1175:
1174:
1161:
1153:
1152:
1146:
1129:
1128:
1125:
1117:
1116:
1103:
1095:
1094:
1081:
1073:
1072:
1059:
1046:
1045:
1041:
1038:
1027:
1019:
1018:
1014:
1011:
1000:
992:
991:
987:
984:
973:
965:
964:
960:
959:
955:
954:
944:
931:
930:
917:
903:
902:
892:
881:
880:
870:
861:
860:
851:
842:
841:
825:
814:
813:
801:
792:
791:
788:
782:
781:
778:
772:
771:
765:
764:
758:
747:
746:
740:
731:
730:
727:
721:
720:
717:
711:
710:
704:
703:
691:
683:
682:
676:
667:
666:
641:
632:
631:
621:
616:
608:
607:
603:
602:
590:
582:
581:
575:
566:
565:
540:
531:
530:
527:
522:
514:
513:
509:
508:
505:
504:
501:
500:
497:
492:
484:
483:
471:
463:
462:
456:
447:
446:
421:
412:
411:
401:
396:
388:
387:
383:
382:
376:
375:
370:
364:
363:
360:
353:
352:
349:
342:
341:
338:
332:
331:
327:
326:
323:
316:
315:
312:
305:
304:
301:
295:
294:
290:
289:
286:
285:
282:
275:
274:
271:
264:
263:
260:
254:
253:
249:
248:
244:
243:
240:
231:
230:
227:
219:
218:
216:04 15 21.53600
213:
205:
204:
198:
197:
194:
185:
184:
181:
173:
172:
170:04 15 21.79572
167:
159:
158:
152:
151:
148:
139:
138:
135:
127:
126:
124:04 15 16.31962
121:
113:
112:
106:
105:
100:
92:
91:
73:
72:
58:
57:
51:
50:
49:
48:
47:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
6219:
6208:
6205:
6203:
6200:
6198:
6195:
6193:
6190:
6188:
6185:
6183:
6180:
6178:
6175:
6173:
6172:Bayer objects
6170:
6168:
6165:
6163:
6160:
6158:
6155:
6153:
6150:
6148:
6145:
6143:
6140:
6138:
6135:
6133:
6130:
6128:
6125:
6124:
6122:
6112:
6102:
6100:
6090:
6088:
6078:
6076:
6071:
6066:
6064:
6054:
6050:
6039:
6029:
6019:
6016:
6014:
6011:
6010:
6008:
6006:
6002:
5998:
5988:
5985:
5983:
5980:
5978:
5975:
5973:
5970:
5969:
5967:
5965:
5961:
5957:
5947:
5944:
5942:
5939:
5937:
5934:
5932:
5929:
5927:
5924:
5922:
5919:
5917:
5914:
5912:
5909:
5908:
5906:
5902:
5896:
5893:
5891:
5888:
5886:
5883:
5881:
5878:
5876:
5873:
5871:
5868:
5866:
5863:
5861:
5858:
5856:
5853:
5851:
5848:
5846:
5843:
5841:
5838:
5836:
5833:
5831:
5828:
5826:
5823:
5821:
5818:
5816:
5813:
5811:
5808:
5806:
5803:
5801:
5798:
5796:
5793:
5791:
5788:
5786:
5783:
5781:
5778:
5776:
5773:
5771:
5768:
5766:
5763:
5761:
5758:
5756:
5753:
5751:
5748:
5746:
5743:
5741:
5738:
5736:
5733:
5731:
5728:
5726:
5723:
5721:
5718:
5716:
5713:
5711:
5708:
5706:
5703:
5701:
5698:
5696:
5693:
5691:
5688:
5686:
5683:
5681:
5678:
5676:
5673:
5671:
5668:
5666:
5663:
5661:
5658:
5656:
5653:
5651:
5648:
5646:
5643:
5641:
5638:
5636:
5633:
5631:
5628:
5626:
5623:
5621:
5618:
5616:
5613:
5612:
5610:
5606:
5603:
5601:
5597:
5587:
5584:
5583:
5581:
5579:
5575:
5572:
5570:
5566:
5556:
5553:
5551:
5548:
5546:
5543:
5541:
5538:
5536:
5533:
5531:
5528:
5526:
5523:
5521:
5518:
5516:
5513:
5512:
5510:
5508:
5504:
5500:
5490:
5487:
5485:
5482:
5480:
5477:
5475:
5472:
5470:
5467:
5465:
5462:
5460:
5457:
5455:
5452:
5450:
5447:
5445:
5442:
5440:
5437:
5435:
5432:
5430:
5427:
5425:
5422:
5420:
5417:
5415:
5412:
5411:
5409:
5405:
5399:
5396:
5394:
5391:
5389:
5386:
5384:
5381:
5379:
5376:
5374:
5371:
5370:
5368:
5366:
5362:
5356:
5353:
5351:
5348:
5346:
5343:
5341:
5338:
5336:
5333:
5331:
5328:
5326:
5323:
5321:
5318:
5316:
5313:
5311:
5308:
5306:
5303:
5301:
5298:
5296:
5293:
5291:
5288:
5287:
5285:
5283:
5279:
5273:
5270:
5268:
5265:
5263:
5260:
5258:
5255:
5253:
5250:
5248:
5245:
5243:
5240:
5239:
5237:
5235:
5231:
5225:
5222:
5220:
5217:
5215:
5212:
5210:
5207:
5205:
5204:53 (Sceptrum)
5202:
5200:
5197:
5195:
5192:
5190:
5187:
5185:
5182:
5180:
5177:
5175:
5172:
5171:
5169:
5167:
5163:
5157:
5154:
5152:
5149:
5147:
5144:
5142:
5139:
5137:
5134:
5132:
5129:
5127:
5124:
5122:
5119:
5117:
5114:
5112:
5109:
5107:
5104:
5102:
5099:
5097:
5094:
5092:
5089:
5087:
5084:
5082:
5081:τ (Angetenar)
5079:
5077:
5074:
5072:
5069:
5067:
5064:
5062:
5059:
5057:
5054:
5052:
5049:
5047:
5044:
5042:
5039:
5037:
5034:
5032:
5029:
5027:
5024:
5022:
5019:
5017:
5014:
5012:
5009:
5007:
5004:
5002:
4999:
4997:
4994:
4992:
4989:
4987:
4984:
4982:
4979:
4977:
4974:
4972:
4969:
4968:
4966:
4964:
4960:
4957:
4955:
4951:
4945:
4942:
4940:
4937:
4936:
4933:
4929:
4922:
4917:
4915:
4910:
4908:
4903:
4902:
4899:
4874:
4871:
4870:
4868:
4864:
4861:
4859:
4858:rogue planets
4854:
4850:
4846:
4827:
4824:
4817:
4814:
4813:
4811:
4809:
4805:
4787:
4784:
4777:
4774:
4767:
4764:
4757:
4754:
4751:
4744:
4741:
4734:
4731:
4724:
4721:
4714:
4711:
4710:
4708:
4706:
4702:
4691:
4688:
4687:
4685:
4683:
4679:
4676:
4674:
4670:
4666:
4647:
4644:
4643:
4641:
4639:
4635:
4632:
4630:
4624:
4620:
4605:
4598:
4595:
4592:
4585:
4582:
4575:
4572:
4569:
4562:
4559:
4556:
4554:
4550:
4543:
4540:
4533:
4530:
4523:
4520:
4513:
4510:
4503:
4500:
4497:
4494:
4487:
4484:
4477:
4474:
4467:
4464:
4457:
4454:
4452:planet b
4451:
4444:
4441:
4438:
4431:
4428:
4421:
4418:
4415:
4408:
4405:
4398:
4395:
4388:
4385:
4378:
4375:
4372:
4365:
4362:
4355:
4352:
4349:
4342:
4339:
4337:
4333:
4326:
4323:
4316:
4313:
4310:
4303:
4300:
4297:
4293:
4286:
4283:
4276:
4273:
4271:
4267:
4263:
4259:
4255:
4248:
4245:
4242:
4235:
4232:
4231:
4229:
4227:
4219:
4212:
4205:
4202:
4199:
4192:
4189:
4186:
4183:
4176:
4173:
4170:
4163:
4160:
4157:
4154:
4147:
4144:
4137:
4134:
4133:
4131:
4129:
4125:
4118:
4111:
4108:
4105:
4098:
4095:
4088:
4085:
4084:
4082:
4080:
4076:
4065:
4062:
4061:
4059:
4057:
4053:
4050:
4048:
4045:Main-sequence
4042:
4038:
4019:
4018:Delta Pavonis
4016:
4015:
4013:
4009:
4006:
4004:
4000:
3996:
3981:
3978:
3975:
3966:
3962:
3957:
3954:
3947:
3942:
3940:
3935:
3933:
3928:
3927:
3924:
3920:
3914:
3911:
3908:
3905:
3904:
3900:
3892:
3886:
3882:
3875:
3872:
3861:
3857:
3853:
3852:
3847:
3840:
3837:
3825:
3821:
3817:
3813:
3807:
3804:
3798:
3793:
3789:
3785:
3780:
3775:
3771:
3767:
3766:
3761:
3754:
3752:
3748:
3742:
3737:
3733:
3729:
3724:
3719:
3715:
3711:
3710:
3705:
3698:
3695:
3690:
3686:
3681:
3676:
3672:
3668:
3663:
3658:
3654:
3650:
3646:
3639:
3636:
3631:
3627:
3622:
3617:
3613:
3609:
3604:
3599:
3595:
3591:
3587:
3579:
3576:
3564:
3557:
3551:
3548:
3536:
3532:
3526:
3523:
3518:
3514:
3508:
3505:
3499:
3494:
3487:
3484:
3480:
3475:
3472:
3467:
3463:
3459:
3455:
3448:
3445:
3440:
3436:
3432:
3428:
3424:
3420:
3416:
3412:
3408:
3404:
3397:
3394:
3381:
3375:
3373:
3371:
3367:
3362:
3358:
3353:
3348:
3344:
3340:
3335:
3330:
3326:
3322:
3318:
3311:
3309:
3305:
3300:
3296:
3292:
3288:
3284:
3280:
3275:
3270:
3266:
3262:
3255:
3252:
3246:
3241:
3237:
3233:
3229:
3225:
3221:
3214:
3211:
3207:
3203:
3199:
3195:
3191:
3187:
3182:
3177:
3173:
3169:
3161:
3159:
3157:
3155:
3151:
3146:
3142:
3137:
3132:
3128:
3124:
3120:
3116:
3112:
3105:
3102:
3098:
3094:
3091:
3086:
3084:
3080:
3075:
3071:
3067:
3063:
3058:
3053:
3049:
3045:
3041:
3037:
3030:
3027:
3022:
3018:
3013:
3008:
3004:
3000:
2995:
2990:
2986:
2982:
2978:
2970:
2968:
2966:
2962:
2956:
2951:
2947:
2943:
2938:
2933:
2929:
2925:
2921:
2914:
2912:
2910:
2908:
2906:
2902:
2896:
2891:
2887:
2883:
2878:
2873:
2869:
2865:
2861:
2854:
2852:
2850:
2848:
2844:
2839:
2835:
2830:
2825:
2821:
2817:
2812:
2807:
2803:
2799:
2792:
2790:
2786:
2774:
2770:
2766:
2756:
2754:
2752:
2748:
2743:
2739:
2735:
2731:
2727:
2723:
2716:
2714:
2712:
2708:
2703:
2699:
2695:
2691:
2684:
2681:
2676:
2672:
2668:
2664:
2660:
2656:
2651:
2646:
2642:
2638:
2631:
2628:
2623:
2619:
2615:
2611:
2604:
2601:
2597:
2593:
2589:
2584:
2581:
2576:
2572:
2568:
2564:
2560:
2556:
2551:
2546:
2542:
2538:
2530:
2527:
2523:
2519:
2513:
2509:
2504:
2499:
2495:
2491:
2486:
2481:
2477:
2473:
2469:
2467:
2458:
2456:
2454:
2452:
2450:
2446:
2442:
2438:
2434:
2429:
2427:
2425:
2423:
2421:
2419:
2417:
2415:
2411:
2407:
2403:
2397:
2393:
2388:
2383:
2379:
2375:
2370:
2365:
2361:
2357:
2353:
2351:
2342:
2340:
2338:
2336:
2332:
2327:
2323:
2319:
2315:
2311:
2307:
2302:
2297:
2293:
2289:
2282:
2280:
2276:
2272:
2268:
2262:
2258:
2253:
2248:
2244:
2240:
2235:
2230:
2226:
2222:
2218:
2216:
2207:
2205:
2203:
2201:
2199:
2195:
2189:
2158:
2152:
2145:
2136:
2133:
2120:
2117:
2096:
2090:
2081:
2075:
2066:
2060:
2055:
2051:
2041:
2038:
2032:
2024:
2020:
2013:
2007:
1994:
1990:
1989:Serpens Caput
1986:
1976:
1973:
1967:
1965:
1963:
1959:
1955:
1954:
1945:
1943:
1941:
1936:
1932:
1921:
1916:
1913:
1911:
1903:
1901:
1899:
1895:
1882:
1880:
1876:
1872:
1860:
1859:Kepler's laws
1856:
1847:40 Eridani A,
1844:
1836:
1834:
1832:
1831:Serpens Caput
1828:
1823:
1821:
1817:
1813:
1809:
1804:
1801:
1797:
1793:
1792:spectral type
1789:
1786:
1785:main-sequence
1777:
1770:
1768:
1762:
1758:
1754:
1750:
1746:
1741:
1736:
1732:
1727:
1725:
1717:
1713:
1709:
1704:40 Eridani A,
1701:
1697:
1693:
1685:
1683:
1681:
1677:
1673:
1669:
1664:
1662:
1658:
1654:
1650:
1646:
1641:
1639:
1635:
1631:
1627:
1623:
1619:
1615:
1611:
1608:
1605:. It has the
1604:
1600:
1596:
1595:constellation
1592:
1588:
1580:
1577:
1575:
1574:
1571:
1568:
1566:
1565:
1562:
1559:
1557:
1556:
1552:
1551:
1546:
1542:
1538:
1532:
1527:
1523:
1519:
1515:
1511:
1505:
1500:
1497: 26976,
1496:
1490:
1485:
1481:
1477:
1473:
1469:
1465:
1462: 19849,
1461:
1458: 26965,
1457:
1451:
1446:
1442:
1436:
1431:
1427:
1423:
1419:
1414:
1411:
1407:
1404:
1398:
1396:
1395:
1391:
1390:
1387:
1383:
1381:
1380:
1376:
1375:
1372:
1368:
1366:
1364:
1360:
1356:
1355:
1352:
1336:
1334:
1331:
1330:
1327:
1311:
1309:
1308:
1304:
1303:
1300:
1284:
1282:
1281:
1277:
1276:
1271:
1268:
1264:
1262:
1261:
1257:
1256:
1253:
1244:
1242:
1241:
1237:
1236:
1233:
1224:
1222:
1221:
1217:
1216:
1213:
1197:
1195:
1194:
1190:
1189:
1184:
1180:
1176:
1173:
1162:
1160:
1159:
1155:
1154:
1147:
1145:
1143:
1139:
1135:
1131:
1130:
1126:
1124:
1123:
1119:
1118:
1115:
1104:
1102:
1101:
1097:
1096:
1093:
1082:
1080:
1079:
1075:
1074:
1071:
1060:
1058:
1056:
1052:
1048:
1047:
1044:
1028:
1026:
1025:
1021:
1020:
1017:
1001:
999:
998:
994:
993:
990:
974:
972:
971:
967:
966:
961:
956:
945:
940:
938:
933:
932:
918:
915:
913:
910:
905:
904:
893:
890:
888:
883:
882:
871:
869:
867:
863:
862:
852:
850:
848:
844:
843:
839:
826:
823:
821:
816:
815:
812:
802:
800:
798:
794:
793:
789:
787:
784:
783:
779:
777:
774:
773:
770:
766:
763:
759:
756:
754:
749:
748:
745:
741:
739:
737:
733:
732:
729:40 Eridani BC
728:
726:
723:
722:
718:
716:
713:
712:
709:
705:
701:
696:
692:
690:
689:
685:
684:
681:
677:
675:
673:
669:
668:
665:
661:
653:
649:
642:
640:
638:
637:Proper motion
634:
633:
622:
620:
614:
610:
609:
604:
600:
595:
591:
589:
588:
584:
583:
580:
576:
574:
572:
568:
567:
564:
560:
552:
548:
541:
539:
537:
536:Proper motion
533:
532:
529:−21 km/s
528:
526:
520:
516:
515:
510:
506:
502:
498:
496:
490:
486:
485:
481:
476:
472:
470:
469:
465:
464:
461:
457:
455:
453:
449:
448:
445:
441:
433:
429:
422:
420:
418:
417:Proper motion
414:
413:
402:
400:
394:
390:
389:
384:
381:
377:
374:
371:
369:
366:
365:
361:
359:
355:
354:
350:
348:
344:
343:
339:
337:
334:
333:
330:40 Eridani C
328:
324:
322:
318:
317:
313:
311:
307:
306:
302:
300:
297:
296:
293:40 Eridani B
291:
287:
283:
281:
277:
276:
272:
270:
266:
265:
261:
259:
256:
255:
252:40 Eridani A
250:
245:
241:
237:
233:
232:
228:
226:
225:
221:
220:
214:
212:
211:
207:
206:
203:
199:
195:
191:
187:
186:
182:
180:
179:
175:
174:
168:
166:
165:
161:
160:
157:
153:
149:
145:
141:
140:
136:
134:
133:
129:
128:
122:
120:
119:
115:
114:
111:
107:
104:
101:
99:
98:
97:Constellation
94:
93:
90:
87:
83:
80:
74:
62:
55:
45:
37:
33:
19:
6142:White dwarfs
6111:Solar System
5941:ESO 0313-192
5936:MRC 0406-244
5515:51 Eridani b
5051:ο (40, Keid)
5050:
4971:α (Achernar)
4673:Brown dwarfs
4638:White dwarfs
4334:planet
4225:(red dwarfs)
4145:
3918:
3880:
3874:
3863:. Retrieved
3849:
3839:
3828:. Retrieved
3806:
3769:
3763:
3713:
3707:
3697:
3652:
3648:
3638:
3593:
3589:
3578:
3567:. Retrieved
3550:
3538:. Retrieved
3525:
3516:
3507:
3486:
3479:White Dwarfs
3478:
3474:
3457:
3453:
3447:
3406:
3402:
3396:
3384:. Retrieved
3324:
3320:
3264:
3260:
3254:
3227:
3223:
3213:
3171:
3167:
3118:
3114:
3104:
3039:
3035:
3029:
2984:
2980:
2927:
2923:
2867:
2863:
2801:
2797:
2777:. Retrieved
2773:the original
2768:
2763:40 Eridani 3
2725:
2721:
2693:
2689:
2683:
2640:
2636:
2630:
2613:
2609:
2603:
2583:
2540:
2536:
2529:
2475:
2471:
2465:
2359:
2355:
2349:
2291:
2287:
2224:
2220:
2214:
2119:
1975:
1951:
1949:
1930:
1920:minimum mass
1917:
1914:
1907:
1890:40 Eridani C
1886:40 Eridani B
1883:
1879:evening star
1867:40 Eridani A
1863:40 Eridani A
1840:
1824:
1782:
1765:40 Eridani A
1760:
1730:
1728:
1720:40 Eridani C
1707:
1689:
1686:Nomenclature
1665:
1644:
1642:
1621:
1617:
1609:
1602:
1586:
1585:
1553:
1521:
1483:
1466: 1325,
1444:
1432: 3093,
1399:5.6 Gyr
1392:
1377:
1362:
1357:
1332:
1305:
1278:
1273:40 Eridani C
1265:16,500
1258:
1238:
1218:
1191:
1186:40 Eridani B
1156:
1141:
1137:
1132:
1120:
1098:
1076:
1054:
1049:
1022:
995:
968:
963:40 Eridani A
935:
907:
885:
864:
847:Eccentricity
845:
818:
795:
790:40 Eridani C
785:
780:40 Eridani B
775:
751:
734:
724:
719:40 Eridani A
714:
686:
670:
635:
611:
606:40 Eridani C
585:
569:
534:
517:
512:40 Eridani B
487:
466:
450:
415:
391:
386:40 Eridani A
222:
208:
202:40 Eridani C
201:
176:
162:
156:40 Eridani B
155:
130:
116:
110:40 Eridani A
109:
95:
18:40 Eridani C
6099:Outer space
6087:Spaceflight
6018:HE0435-1223
5911:Eridanus II
5525:Gliese 86 b
5126:υ (Theemin)
4354:EV Lacertae
4191:36 Ophiuchi
4162:70 Ophiuchi
3386:16 December
2870:(2): 2411.
1981:16 15 16.32
1822:of 0.410).
1796:white dwarf
1668:white dwarf
1661:Otto Struve
1649:binary pair
1634:light-years
1624:. Based on
1612:, which is
1526:DY Eri
1437:J04153-0739
1428: 166,
1422:40 Eri
1384:3,100
1379:Temperature
1260:Temperature
1245:0.013
1225:0.014
1149:1.23 ± 0.28
1100:Metallicity
1078:Temperature
943:(secondary)
866:Inclination
358:color index
347:color index
321:color index
310:color index
280:color index
269:color index
224:Declination
178:Declination
132:Declination
6121:Categories
6013:GRB 080913
5931:LEDA 74886
5916:ESO 198-13
5545:HD 30562 b
5540:HD 28185 b
5530:HD 10647 b
5507:Exoplanets
5429:Gliese 180
5131:υ (Beemim)
5006:θ (Acamar)
4981:γ (Zaurak)
4652:0.0013 ly)
4646:Gliese 440
4627:Degenerate
4603:0.0076 ly)
4597:Gliese 268
4580:0.0040 ly)
4567:0.0031 ly)
4561:Gliese 588
4548:0.0027 ly)
4542:Gliese 752
4538:0.0032 ly)
4532:Gliese 908
4528:0.0067 ly)
4522:Gliese 754
4518:0.0053 ly)
4512:Gliese 693
4508:0.0031 ly)
4492:0.0018 ly)
4486:Gliese 229
4482:0.0022 ly)
4476:Gliese 205
4472:0.0049 ly)
4462:0.0038 ly)
4449:0.0028 ly)
4443:Gliese 251
4436:0.0020 ly)
4430:Stein 2051
4426:0.0024 ly)
4420:Gliese 526
4413:0.0026 ly)
4403:0.0046 ly)
4393:0.0017 ly)
4387:Gliese 445
4383:0.0027 ly)
4360:0.0018 ly)
4347:0.0026 ly)
4341:Gliese 682
4331:0.0019 ly)
4325:Gliese 832
4321:0.0024 ly)
4308:0.0026 ly)
4302:Gliese 412
4291:0.0036 ly)
4281:0.0034 ly)
4253:0.0025 ly)
4247:Gliese 876
4240:0.0034 ly)
4197:0.0036 ly)
4181:0.0074 ly)
4175:Gliese 570
4168:0.0087 ly)
4152:0.0042 ly)
4142:0.0017 ly)
4116:0.0093 ly)
4103:0.0025 ly)
4093:0.0081 ly)
3865:2018-09-20
3830:2011-04-21
3779:2404.17494
3772:(5): 243.
3723:2302.10310
3716:(4): 176.
3662:2201.10639
3655:(4): 171.
3603:2105.11583
3569:2018-07-14
3561:(Report).
3409:: 40–126.
3334:1709.00478
3181:2007.15077
3042:(2): 759.
2994:1801.03970
2987:(3): 126.
2937:2004.02343
2877:1807.07098
2811:1707.03635
2779:2018-02-06
2616:: B/gcvs.
2485:2208.00211
2369:2208.00211
2234:2208.00211
2190:References
1946:In fiction
1928:0.47
1871:magnitudes
1803:flare star
1771:Properties
1737:word قيض (
1710:(WMC) for
1587:40 Eridani
1543: 1909
1539: 25,
1516: 1908
1512: 24,
1478: 1907
1474: 23,
1418:ο Eri
1369:~5.5
1361:(log
1333:Luminosity
1240:Luminosity
1151: km/s
1053:(log
1024:Luminosity
909:Periastron
630: km/s
410: km/s
380:Astrometry
373:Flare star
6063:Astronomy
5972:Abell 383
5424:Gliese 86
5166:Flamsteed
4996:ζ (Zibal)
4976:β (Cursa)
4822:0.041 ly)
4782:0.057 ly)
4739:0.037 ly)
4729:0.052 ly)
4696:0.014 ly)
4590:0.035 ly)
4553:B (vB 10)
4456:LP 816-60
4370:0.011 ly)
4315:AD Leonis
4210:0.013 ly)
4070:0.049 ly)
4024:0.015 ly)
3689:246285610
3630:235186973
3498:1012.0707
3439:186209747
3382:. IAU.org
3361:119257982
3327:(1): 16.
3274:0807.1686
3206:0004-6361
3145:120006763
3074:122724497
3052:CiteSeerX
3021:119404519
2838:119080080
2675:118577511
2650:0811.3982
2575:119476992
2512:244398875
2396:244398875
2301:0708.1752
2261:244398875
2076:−
2061:
2042:⋅
1953:Star Trek
1800:red dwarf
1745:eggshells
1696:Latinised
1663:in 1851.
1636:from the
1618:ο Eridani
1614:Latinized
1401:1.8
786:Companion
725:Companion
238: (V)
192: (V)
146: (V)
36:ο Eridani
6038:Category
5946:UGC 2812
5600:Galaxies
5459:LP 890-9
5454:LTT 1445
5340:1195 (g)
5335:1190 (f)
5330:1189 (f)
5325:1143 (h)
5320:1106 (y)
5315:1008 (e)
5234:Variable
5046:ο (Beid)
5001:η (Azha)
4986:δ (Rana)
4879:0.24 ly)
4832:0.24 ly)
4776:SIMP0136
4772:0.18 ly)
4762:0.14 ly)
4749:0.44 ly)
4719:0.20 ly)
4648:(15.1226
4599:(19.7414
4576:(19.5330
4563:(19.2996
4544:(19.2922
4534:(19.2745
4524:(19.2724
4514:(19.2078
4504:(18.8883
4488:(18.7906
4478:(18.6042
4468:(18.5534
4458:(18.3305
4445:(18.2146
4432:(17.9925
4422:(17.7263
4409:(17.5309
4399:(17.3738
4389:(17.1368
4379:(16.9861
4356:(16.4761
4343:(16.3328
4327:(16.2005
4317:(16.1939
4304:(15.9969
4287:(15.8060
4277:(15.7586
4249:(15.2382
4236:(15.2001
4193:(19.4185
4177:(19.1987
4164:(16.7074
4148:(16.3330
4138:(15.8857
4112:(19.7045
4099:(19.3314
4089:(18.7993
3824:Archived
3596:(1): 8.
3299:27151456
3174:: A115,
3093:Archived
2804:(5): 9,
2326:18759600
1827:Hercules
1626:parallax
1599:Eridanus
1491:−07° 781
1452:−07° 780
1447:: Keid,
1350:☉
1325:☉
1298:☉
1251:☉
1231:☉
1211:☉
1122:Rotation
1042:☉
1015:☉
988:☉
688:Distance
672:Parallax
587:Distance
571:Parallax
491: (M
468:Distance
452:Parallax
103:Eridanus
6049:Portals
5926:IC 2006
5921:IC 1953
5569:Nebulae
5479:WASP-78
5469:WASP-35
5444:GJ 3323
5439:GJ 3293
5434:GJ 1062
5305:789 (s)
5300:506 (q)
5295:487 (p)
5290:486 (p)
4991:ε (Ran)
4818:(15.450
4778:(19.955
4735:(17.002
4725:(16.856
4692:(15.877
4586:(19.577
4584:GJ 1005
4502:Ross 47
4407:GJ 3323
4377:GJ 3379
4366:(16.800
4285:GJ 1002
4275:LHS 288
4234:GJ 1245
4206:(19.609
4204:HR 7703
4066:(16.730
4020:(19.893
3972:member
3970:Primary
3851:Science
3784:Bibcode
3728:Bibcode
3667:Bibcode
3608:Bibcode
3462:Bibcode
3460:: 128.
3411:Bibcode
3339:Bibcode
3279:Bibcode
3232:Bibcode
3230:: 643.
3186:Bibcode
3123:Bibcode
3044:Bibcode
2999:Bibcode
2942:Bibcode
2882:Bibcode
2816:Bibcode
2730:Bibcode
2728:: 819.
2698:Bibcode
2655:Bibcode
2618:Bibcode
2555:Bibcode
2490:Bibcode
2374:Bibcode
2306:Bibcode
2239:Bibcode
1950:In the
1940:Mercury
1718:(IAU).
1676:Procyon
1593:in the
1506:160-060
1342:0.00013
1338:0.00651
958:Details
776:Primary
742:~8,000
715:Primary
340:M4.5eV
89:J2000.0
86:Equinox
82:J2000.0
5262:EM (d)
5199:51 (c)
5189:39 (A)
5184:17 (v)
4875:(19.54
4866:Y-type
4828:(18.49
4808:Y-type
4788:(19.96
4768:(18.62
4758:(18.20
4745:(17.41
4715:(15.22
4705:T-type
4682:L-type
4397:2M1540
4364:G 9-38
4222:M-type
4128:K-type
4079:G-type
4056:A-type
4011:G-type
3887:
3687:
3628:
3540:22 May
3513:"Beid"
3437:
3431:106749
3429:
3359:
3297:
3204:
3143:
3072:
3054:
3019:
2840:, 200.
2836:
2696:: 57.
2673:
2596:I/238A
2573:
2522:VizieR
2510:
2478:: A1.
2406:VizieR
2394:
2362:: A1.
2324:
2271:VizieR
2259:
2227:: A1.
2171:where
2149:
2143:
2131:
2094:
2088:
2079:
2073:
2064:
2036:
2030:
2017:
2011:
1958:Vulcan
1894:X-rays
1861:) and
1740:alqayḍ
1735:Arabic
1680:Sirius
1603:40 Eri
1555:SIMBAD
1344:
1319:
1307:Radius
1292:
1220:Radius
1205:
1170:
1112:
1090:
1068:
1036:
1009:
997:Radius
982:
953:°
901:°
895:151.44
879:°
873:107.56
858:0.0027
854:0.4294
804:230.30
797:Period
736:Period
624:−44.06
404:−42.47
362:+1.67
351:+0.83
325:+0.03
314:+0.45
284:+0.82
273:+0.45
262:K0.5V
242:11.17
34:, see
6075:Stars
5904:Other
5810:1427A
5407:Other
5398:30963
5388:30562
5383:28185
5378:19467
4963:Bayer
4954:Stars
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