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34:
41:
870:, the star was found to be orbited by a 13th-magnitude M-dwarf, designated HD 11343 B. It is about 70% as large as the Sun both in mass and radius, is slightly cooler than the primary red giant at 4,351 K (4,078 °C; 7,372 °F), and is situated at a separation of roughly 2,600 astronomical units (0.041 ly) from its brighter companion.
1480:
Feng, Fabo; Butler, R. Paul; Vogt, Steven S.; Clement, Matthew S.; Tinney, C. G.; Cui, Kaiming; Aizawa, Masataka; Jones, Hugh R. A.; Bailey, J.; Burt, Jennifer; Carter, B. D.; Crane, Jeffrey D.; Dotti, Francesco
Flammini; Holden, Bradford; Ma, Bo; Ogihara, Masahiro; Oppenheimer, Rebecca; O’Toole, S.
935:
Another planet, HD 11343 c, was discovered in 2022 closer to HD 11343 A, also using the radial-velocity method. The planet is reportedly a
Jupiter analog, larger than the previous planet but likely considerably less massive, with a
1873:
947:. It orbits its star at a distance of 0.923 AU (138,100,000 km) every 228.5 days (0.626 years). Due to the faintness of the astrometric signals it produces, its
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Jones, M. I.; et al. (2016). "Four new planets around giant stars and the mass-metallicity correlation of planet-hosting stars".
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1438:
Xiao, Guang-Yao; et al. (1 May 2023). "The Masses of a Sample of Radial-velocity
Exoplanets with Astrometric Measurements".
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J.; Shectman, Stephen A.; Wittenmyer, Robert A.; Wang, Sharon X.; Wright, D. J.; Xuan, Yifan (1 September 2022).
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of 4,670 K (4,400 °C; 7,950 °F), corresponding to its spectral type of K2, and is slightly
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968:), semi-major axis (3.729 AU), orbital period (5.07 years), and eccentricity (0.360) for HD 11343 b.
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1667:"A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties"
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cannot be well-constrained. The discovery paper for HD 11343 c notably presents a higher mass (
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1519: This article incorporates text from this source, which is available under the
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under most circumstances, but can be observed using binoculars as an orangish dot near
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observations, alongside three other substellar companions to giant stars, namely
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El-Badry, Kareem; Rix, Hans-Walter; Heintz, Tyler M (20 July 2021).
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Early Data
Release 3: Summary of the contents and survey properties"
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898:. This planet, HD 11343 b, is estimated to be slightly larger than
838:(albeit one estimate places its mass at a significantly higher 2.0
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of 7.88, making it too faint to be visible by the naked eye from
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Data
Release 2: Summary of the contents and survey properties"
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During a 2021 survey searching for binaries within data from
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1593:"The Revised TESS Input Catalog and Candidate Target List"
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of 2.8 AU (420,000,000 km), around where the
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companion, located in the southern constellation of
1591:Stassun, Keivan G.; et al. (1 October 2019).
1359:; et al. (Gaia collaboration) (August 2018).
909:, close to the initially estimated minimum of 5.5
1671:Monthly Notices of the Royal Astronomical Society
803:about 500 light-years (150 pc) distant. Two
807:exoplanets are known to orbit the primary star.
882:planet orbiting HD 11343 A was discovered from
18:K-type giant star in the constellation Eridanus
1586:
1584:
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1336:Centre de données astronomiques de Strasbourg
847:), but approximately eight times as large in
101:−54° 27′ 53.8624″
8:
1874:Planetary systems with two confirmed planets
928:, every 1,585 days (4.34 years) in a mildly
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1487:The Astrophysical Journal Supplement Series
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916:. It revolves around its host star at a
830:The primary component, HD 11343 A, is a
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1440:Research in Astronomy and Astrophysics
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7:
851:and 25 times as luminous. It has an
834:star slightly more massive than the
227:
1634:"Limiting Magnitude in Binoculars"
1196:Calculated from star's luminosity.
14:
1646:from the original on 21 July 2011
1821:Extrasolar Planets Encyclopaedia
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1296:Gaia EDR3 record for this source
972:The HD 11343 A planetary system
39:
32:
1411:Gaia DR2 record for this source
250:6.4964 ± 0.0156
1849:Henry Draper Catalogue objects
50:Location of HD 11343 (circled)
1:
863:content 71% that of the Sun.
1549:Astronomy & Astrophysics
1370:Astronomy & Astrophysics
1290:10.1051/0004-6361/202039657e
1238:Astronomy & Astrophysics
1024:
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1753:"HIP 8541 b - NASA Science"
1732:"HD 11343 c - NASA Science"
1561:10.1051/0004-6361/201628067
1404:10.1051/0004-6361/201833051
1270:10.1051/0004-6361/202039657
815:The HD 11343 system has an
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1844:Eridanus (constellation)
1610:10.3847/1538-3881/ab3467
1597:The Astronomical Journal
1500:10.3847/1538-4365/ac7e57
1452:10.1088/1674-4527/accb7e
1394:2018A&A...616A...1G
1261:2021A&A...649A...1G
811:Stellar characteristics
281:Absolute magnitude
125:Evolutionary stage
108:Apparent magnitude
1859:Durchmusterung objects
1711:NASA Exoplanet Archive
902:and has a mass of 5.7
787:between HD 11343 A, a
1684:10.1093/mnras/stab323
1632:Zarenski, Ed (2004).
853:effective temperature
130:Red-giant branch star
980:(in order from star)
795:, and HD 11343 B, a
1816:Articles and images
1707:"HIP 8541 Overview"
973:
949:orbital inclination
756:Database references
529:Rotational velocity
230: −46.798
218: 110.617
23:
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817:apparent magnitude
676:Other designations
270:(153.9 ± 0.4
137:Spectral type
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1884:Planetary systems
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1639:. Cloudy Nights.
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749:J01500631-5427539
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1362:
1351:
1341:19 September
1339:. Retrieved
1329:
1242:
1236:
1230:
1192:
1149:−0.067
1097:
1075:−0.102
1053:−0.022
1037:≥0.804
1032:
1016:Eccentricity
938:minimum mass
934:
926:Solar System
877:
865:
829:
814:
783:) is a wide
780:
776:
775:
761:
715: 8541,
707: 2232,
650:
625:
620:
590:
560:
536:
532:
527:
505:
483:
461:
456:
426:
399:
364:
337:
326:
316:
279:
258:
242:
207:
190:
15:
1169:~1.13
1160:−16.0
1127:−0.25
1084:~1.24
1021:Inclination
896:HIP 95124 b
892:HIP 84056 b
888:HIP 74890 b
878:In 2016, a
791:borderline
652:Temperature
507:Metallicity
485:Temperature
170:color index
159:color index
148:color index
97:Declination
1838:Categories
1825:HD 11343 b
1808:Astrophoto
1800:Hydrogen α
1603:(4): 138.
1384:1804.09365
1326:"HD 11343"
1252:2012.01533
1204:References
1107:−1.1
1064:−3.8
859:, with an
857:metal-poor
793:giant star
624:(log
555:HD 11343 B
550: km/s
460:(log
428:Luminosity
359:HD 11343 A
331:HD 11343 B
321:HD 11343 A
180:Astrometry
1693:0035-8711
1619:0004-6256
1569:0004-6361
1521:CC BY 4.0
1509:0067-0049
1493:(1): 21.
1460:1674-4527
1279:227254300
1184:Footnotes
1138:−40
977:Companion
940:of 0.804
930:eccentric
868:Gaia EDR3
805:gas giant
797:red dwarf
327:Companion
141:K2III/IV
110: (V)
22:HD 11343
1641:Archived
1523:license.
844:☉
825:Achernar
801:Eridanus
781:HIP 8541
777:HD 11343
699:Gaia DR3
613:☉
583:☉
449:☉
419:☉
392:☉
283: (M
260:Distance
244:Parallax
76:Eridanus
65:J2000.0
1823:links:
1812:Sky Map
1780:WikiSky
1555:: A38.
1389:Bibcode
1294:.
1257:Bibcode
932:orbit.
900:Jupiter
694:−55 351
687:−55 412
354:Details
317:Primary
63:Equinox
1691:
1617:
1567:
1507:
1458:
1415:VizieR
1377:. A1.
1331:SIMBAD
1300:VizieR
1277:
1245:: A1.
1144:0.122
1111:
1070:0.169
1059:228.5
1048:0.923
1026:Radius
894:, and
849:radius
789:K-type
763:SIMBAD
667:
642:
607:
603:−0.060
601:+0.062
592:Radius
577:
573:−0.083
571:+0.078
519:
497:
475:
443:
413:
401:Radius
386:
346:~2600
297:−0.225
295:+0.275
174:0.722
163:0.556
1889:Stars
1804:X-Ray
1792:GALEX
1650:6 May
1644:(PDF)
1637:(PDF)
1409:
1379:arXiv
1275:S2CID
1247:arXiv
1155:73.0
1133:1585
1122:2.80
958:−1.19
956:+0.73
821:Earth
747:2MASS
638:−0.09
636:+0.11
598:0.698
568:0.680
513:−0.15
384:0.115
380:2.009
310:Orbit
292:1.240
228:Dec.:
152:1.10
114:7.88
59:Epoch
1796:IRAS
1788:SDSS
1784:DSS2
1760:2024
1739:2024
1718:2024
1689:ISSN
1652:2011
1615:ISSN
1565:ISSN
1505:ISSN
1456:ISSN
1363:Gaia
1343:2024
1231:Gaia
1102:5.7
1009:days
985:Mass
953:7.71
861:iron
769:data
663:−113
661:+142
658:4351
633:4.58
562:Mass
517:0.08
491:4670
473:0.20
469:2.70
439:−5.6
437:+5.8
434:25.1
411:1.02
407:7.83
376:0.28
372:1.17
366:Mass
168:J−K
157:J−H
146:B−V
1679:doi
1675:506
1605:doi
1601:158
1557:doi
1553:590
1495:doi
1491:262
1448:doi
1413:at
1399:doi
1375:616
1298:at
1286:doi
1265:doi
1243:649
836:Sun
740:GSC
733:TYC
726:TIC
721:PPM
717:SAO
713:HIP
692:CPD
644:cgs
548:0.9
544:1.3
521:dex
495:100
477:cgs
378:/
341:(a)
252:mas
246:(π)
232:mas
220:mas
216:RA:
211:(μ)
1840::
1827:,
1814:,
1810:,
1806:,
1802:,
1798:,
1794:,
1790:,
1786:,
1782::
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1212:^
1081:—
996:AU
890:,
827:.
744:,
737:,
730:,
709:HD
705:GC
703:,
696:,
689:,
685:CD
348:AU
272:pc
267:ly
236:yr
224:yr
194:(R
1829:c
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1621:.
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1267::
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1175:J
1172:R
1165:°
1117:J
1114:M
1098:b
1090:J
1087:R
1043:J
1040:M
1033:c
1011:)
1007:(
998:)
994:(
966:J
963:M
945:J
942:M
914:J
911:M
907:J
904:M
841:M
779:(
669:K
628:)
626:g
610:R
580:M
546:±
539:)
537:i
533:v
531:(
515:±
499:K
493:±
471:±
464:)
462:g
446:L
416:R
409:±
389:M
382:±
374:±
287:)
285:V
274:)
234:/
222:/
198:)
196:v
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