2476:
2482:
29:
2470:
2681:
2406:
2967:
3110:
3146:
3099:
490:). This would indicate a secondary atmosphere produced by processes like volcanic activity and evaporation of volatile materials. However, the composition of volatile materials on HD 219134 b and c could not be accurately determined, yet it is believed that the former has a very thin gaseous envelope, far thinner than those of Uranus and Neptune.
1134:
857:
Dorn, Caroline; Heng, Kevin; Gillon, M.; Lovis, C.; Segransan, D.; Buchhave, L. A.; Demory, B. O.; Malavolta, L.; Dressing, C. D.; Sasselov, D.; Rice, K.; Charbonneau, D.; Collier
Cameron, A.; Latham, D.; Molinari, E.; Pepe, F.; Affer, L.; Bonomo, A. S.; Cosentino, R.; Dumusque, X.; Figueira, P.;
363:
are expected to be rich in volatile materials, such as water and gas. Despite its Earth-like composition, the planet's equilibrium temperature is around 1,015 K (742 °C; 1,367 °F), far too hot for liquid water or life. Depending on the amount of cloud cover in the atmosphere of HD
376:
2127:
2122:
2117:
475:
likely have atmospheres that are secondary in nature, based on the compositions of the planets and the potential for atmospheric escape. For HD 219134 b, the predicted atmosphere was calculated to reach a height of about 0.18
2112:
382:
381:
378:
377:
383:
342:. Using both the radial velocity and transit method, both its mass and radius have been well determined, allowing for accurate modelling of the planet's composition. HD 219134 b has a radius of 1.602
380:
2107:
455:
HD 219134 b orbits its host star with about 28% of the Sun's luminosity with an orbital period of 3 days and an orbital radius of about 0.03 times that of Earth's (compared to the distance of
317:
in front of its star. The exoplanet has a mass of about 4.5 times that of Earth and orbits its host star every three days. In 2017, it was found that the planet likely hosts an atmosphere.
2269:
2134:
356:, giving it a density of about 6.4 g/cm and 1.85 times the gravity of Earth. This is consistent with a rocky, Earth-like composition. This is relatively unusual, as most planets of ≥1.6
2161:
2527:
1946:
1941:
2102:
1565:
3186:
1869:
739:
364:
219134 b, the actual temperature may be somewhat lower, but nowhere near the range for liquid water. In addition, its geology is presumed should be rich in
1840:
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1857:
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Fiorenzano, A. F. M.; Gettel, S.; Harutyunyan, A.; Haywood, R. D.; Johnson, J.; Lopez, E.; Lopez-Morales, M.; Mayor, M.; et al. (2018).
3191:
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2012:
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560:"The HARPS-N Rocky Planet Search, I. HD 219134b: A transiting rocky planet in a multi-planet system at 6.5 pc from the Sun"
2279:
1926:
1881:
2904:
297:, and a density of 6.4 g/cm and orbits at 21.25 light-years away. The exoplanet was initially detected by the instrument
3176:
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44:
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2007:
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2017:
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2498:
1986:
1630:
1530:
1364:
620:
Gillon, Michaël; et al. (2017). "Two massive rocky planets transiting a K-dwarf 6.5 parsecs away".
759:"A new class of Super-Earths formed from high-temperature condensates: HD219134 b, 55 Cnc e, WASP-47 e"
3050:
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109:
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1540:
1455:
1155:
1036:
938:
899:
871:
770:
655:
629:
602:
576:
444:
334:, an exoplanet with a radius and mass bigger than Earth, but smaller than that of the ice giants
3045:
2636:
2519:
1911:
1755:
1700:
1570:
1545:
1293:
1288:
1237:
1087:
790:
525:, has an atmosphere with hydrogen, helium, hydrogen cyanide, nitrogen, and/or carbon monoxide.
460:
447:, or how bright it appears from Earth's perspective, is 5. It can be seen with the naked eye.
102:
835:
3150:
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1334:
1319:
1118:
889:
780:
647:
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456:
215:
87:
758:
436:
and is about 11.0 billion years old, making it one of the oldest stars. In comparison, the
2440:
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1399:
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223:
2924:
809:
885:
643:
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483:(~1,150 km), below the predicted height of a primordial hydrogen atmosphere (0.28
120:
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2700:
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1016:
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472:
331:
245:
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1585:
1359:
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1229:
1214:
1103:
975:
961:
785:
651:
415:
388:
369:
272:
268:
147:
418:, orbited by a total of five to seven planets. The star has a mass of 0.81
2954:
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1785:
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930:
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79:
49:
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1981:
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1068:
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876:
775:
634:
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2758:
374:
757:
Dorn, C; Harrison, J H D; Bonsor, A; Hands, T O (21 March 2019).
2338:
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686:
411:
279:
212:
185:
2342:
1032:
934:
437:
127:
33:
An artist's impression of the hot rocky exoplanet HD 219134 b.
1028:
926:
The Deep
Photographic Guide to the Constellations: Cassiopeia
440:
is 4.6 billion years old and has a temperature of 5778 K.
2270:
3134:
712:"PIA19832: Location of Nearest Rocky Exoplanet Known"
3025:
2963:
2872:
2675:
2517:
2489:
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133:
118:
108:
93:
86:
67:
59:
43:
38:
675:
673:
671:
669:
1947:Habitability of K-type main-sequence star systems
1942:Habitability of F-type main-sequence star systems
763:Monthly Notices of the Royal Astronomical Society
682:"NASA's Spitzer Confirms Closest Rocky Exoplanet"
1566:List of interstellar and circumstellar molecules
504:Other rocky planets with confirmed atmospheres:
921:Cassiopeia Constellation at Constellation Guide
706:
704:
680:Chou, Felicia; Clavin, Whitney (30 July 2015).
471:In 2017, it was predicted that HD 219134 b and
519:, has an atmosphere rich in water and methane.
2354:
1044:
946:
8:
860:"Secondary Atmospheres on HD 219134 b and C"
21:
2411:
2361:
2347:
2339:
1151:
1051:
1037:
1029:
953:
939:
931:
27:
1109:Exoplanet orbital and physical parameters
893:
875:
784:
774:
633:
580:
553:
551:
549:
547:
545:
543:
541:
250:1,015 K (742 °C; 1,367 °F)
1977:List of potentially habitable exoplanets
3141:
537:
3187:Exoplanets detected by radial velocity
290:. HD 219134 b has a size of about 1.6
20:
2285:Geodynamics of terrestrial exoplanets
7:
2432:(technology demonstration; Dec 2015)
1967:Habitability of yellow dwarf systems
1957:Habitability of neutron star systems
2310:Sudarsky's gas giant classification
1937:Habitability of binary star systems
2295:Nexus for Exoplanet System Science
1952:Habitability of natural satellites
558:Motalebi, F.; et al. (2015).
459:from the Sun, which is about 0.38
14:
1962:Habitability of red dwarf systems
834:Fraser Cain (15 September 2008).
808:Fraser Cain (16 September 2008).
744:exoplanetarchive.ipac.caltech.edu
309:and subsequently observed by the
3144:
3109:
3108:
3097:
2965:
2679:
2480:
2474:
2468:
2404:
2059:Stars with proto-planetary discs
2023:NASA Star and Exoplanet Database
2013:Extrasolar Planets Encyclopaedia
1501:Extraterrestrial sample curation
1132:
1972:Habitable zone for complex life
1410:Ultra-short period planet (USP)
1114:Methods of detecting exoplanets
432:. It has a temperature of 4699
2153:Discovered exoplanets by year
16:Super-Earth orbiting HD 219134
1:
3172:Exoplanets discovered in 2015
2451:(weather satellite; Feb 2015)
2426:(weather satellite; Jan 2015)
2280:Extrasolar planets in fiction
1927:Extraterrestrial liquid water
3124:Category:2016 in outer space
3119:Category:2015 in outer space
3114:Category:2014 in outer space
2300:Planets in globular clusters
1917:Circumstellar habitable zone
568:Astronomy & Astrophysics
326:Mass, radius and temperature
303:Telescopio Nazionale Galileo
54:Telescopio Nazionale Galileo
3192:Near-Earth-sized exoplanets
2457:(space telescope; Sep 2015)
2260:Exoplanet naming convention
1370:Planet/Brown dwarf boundary
599:10.1051/0004-6361/201526822
3208:
3167:Cassiopeia (constellation)
3085:orbit insertion; Dec 2015)
3061:(end of mission; Apr 2015)
3053:orbit insertion; Mar 2015)
2910:1SWASP J093010.78+533859.5
1496:Extraterrestrial materials
1130:
500:List of exoplanet extremes
267:) is one of at least five
3092:
3012:67P/Churyumov–Gerasimenko
2528:Asteroid close approaches
2466:
2374:
2323:Discoveries of exoplanets
2318:
1526:Interplanetary dust cloud
1064:
864:The Astrophysical Journal
254:
121:Orbital period (sidereal)
26:
2905:WISE J224607.57−052635.0
2028:Open Exoplanet Catalogue
2003:Nearby Habitable Systems
1889:Transit-timing variation
895:10.3847/1538-4357/aa9c80
836:"Temperature of the Sun"
154:Physical characteristics
2305:Small planet radius gap
2008:Exoplanet Data Explorer
1932:Galactic habitable zone
1506:Giant-impact hypothesis
652:10.1038/s41550-017-0056
591:2015A&A...584A..72M
88:Orbital characteristics
3104:Outer space portal
3041:; Nov 2014 / Mar 2015)
2946:(first observation of
2265:Exoplanet phase curves
2103:Terrestrial candidates
2054:Multiplanetary systems
2018:NASA Exoplanet Archive
1701:Mean-motion resonances
1511:Gravitational collapse
1461:Circumstellar envelope
425:and a radius of 0.778
398:
307:radial velocity method
76:radial velocity method
3182:Transiting exoplanets
2991:C/2014 Q1 (PanSTARRS)
2499:2015 Kerala meteoroid
2140:Potentially habitable
2045:Exoplanetary systems
1987:Superhabitable planet
1746:F/Yellow-white dwarfs
1631:Sample-return mission
1531:Interplanetary medium
810:"How Old is the Sun?"
786:10.1093/mnras/sty3435
406:The planet orbits a (
386:
2504:2015 Thailand bolide
2402:Space probe launches
2275:Extragalactic planet
2255:Carl Sagan Institute
1536:Interplanetary space
1451:Circumplanetary disk
1124:Planet-hosting stars
962:The HD 219134 system
126:3.092926 (± 0.0004)
101:0.038764 (± 0.0047)
3177:Terrestrial planets
2981:C/2014 Q2 (Lovejoy)
2948:gravitational waves
2930:541132 Leleākūhonua
2441:Space observatories
1616:Protoplanetary disk
1596:Planetary migration
1551:Interstellar medium
1330:Circumtriple planet
1325:Circumbinary planet
886:2018ApJ...853...64D
644:2017NatAs...1E..56G
349:and a mass of 4.74
60:Discovery date
45:Discovery site
23:
2996:C/2015 G2 (MASTER)
1581:Nebular hypothesis
1556:Interstellar space
1541:Interstellar cloud
1521:Internal structure
1456:Circumstellar disc
445:apparent magnitude
399:
387:Zooming in on the
3132:
3131:
3026:Space exploration
2464:
2463:
2336:
2335:
1912:Astrooceanography
1546:Interstellar dust
1418:
1417:
1294:Ultra-hot Neptune
1289:Ultra-hot Jupiter
1238:Eccentric Jupiter
1088:Planetary science
1026:
1025:
384:
330:HD 219134 b is a
311:Spitzer telescope
258:
257:
3199:
3149:
3148:
3147:
3140:
3112:
3111:
3102:
3101:
3100:
3006:
2969:
2951:
2901:
2888:
2886:
2885:
2683:
2668:
2666:
2665:
2656:
2654:
2653:
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2608:
2606:
2605:
2596:
2594:
2593:
2584:
2577:
2575:
2574:
2570:(523775) 2014 YB
2565:
2563:
2562:
2553:
2551:
2550:
2546:(357439) 2004 BL
2541:
2539:
2538:
2484:
2478:
2472:
2412:
2408:
2391:
2384:
2363:
2356:
2349:
2340:
2290:Neptunian desert
1676:Tidally detached
1611:Planet formation
1601:Planetary system
1491:Exozodiacal dust
1481:Disrupted planet
1405:Ultra-cool dwarf
1335:Disrupted planet
1320:Chthonian planet
1152:
1136:
1119:Planetary system
1053:
1046:
1039:
1030:
955:
948:
941:
932:
908:
907:
897:
879:
854:
848:
847:
845:
843:
838:. Universe Today
831:
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805:
799:
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754:
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747:
736:
730:
729:
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696:
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664:
663:
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622:Nature Astronomy
617:
611:
610:
584:
564:
555:
397:; 30 July 2015).
385:
237:
236:
172:
170:
70:Detection method
31:
24:
3207:
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3202:
3201:
3200:
3198:
3197:
3196:
3157:
3156:
3155:
3145:
3143:
3135:
3133:
3128:
3098:
3096:
3088:
3021:
3005:
3001:
2959:
2945:
2899:
2883:
2882:
2879:
2868:
2694:evaporation of
2671:
2663:
2662:
2659:
2651:
2650:
2649:(85989) 1999 JD
2647:
2639:
2638:
2637:(33342) 1998 WT
2635:
2627:
2626:
2623:
2615:
2614:
2611:
2603:
2602:
2599:
2591:
2590:
2587:
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2547:
2544:
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2513:
2485:
2479:
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2460:
2435:
2430:LISA Pathfinder
2396:
2393:
2387:
2385:
2380:
2370:
2367:
2337:
2332:
2328:Search projects
2314:
2243:
2032:
1991:
1893:
1865:Radial velocity
1805:
1761:K/Orange dwarfs
1751:G/Yellow dwarfs
1712:
1706:Titius–Bode law
1645:
1576:Molecular cloud
1476:Detached object
1427:
1425:
1414:
1400:Toroidal planet
1390:Sub-brown dwarf
1298:
1224:
1196:(Super-Mercury)
1169:Coreless planet
1145:
1143:
1137:
1128:
1092:
1060:
1057:
1027:
1022:
980:
964:
959:
917:
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911:
856:
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328:
323:
321:Characteristics
301:of the Italian
296:
293:
235:
232:
231:
230:
226:
224:Surface gravity
208:
197:
194:
179:
176:
168:
166:
163:
123:
98:
96:Semi-major axis
72:
34:
17:
12:
11:
5:
3205:
3203:
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3014:
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3003:
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2988:
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2972:
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2961:
2960:
2958:
2957:
2952:
2940:
2938:contact binary
2932:
2927:
2922:
2917:
2912:
2907:
2902:
2894:
2889:
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2870:
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2703:
2698:
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2684:
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2621:
2609:
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2585:
2578:
2566:
2554:
2542:
2530:
2524:
2522:
2515:
2514:
2512:
2511:
2509:WT1190F impact
2506:
2501:
2495:
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2467:
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2459:
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2409:
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915:External links
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814:Universe Today
800:
769:(1): 712–727.
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720:. 30 July 2015
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2701:Gliese 1132 b
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1385:Pulsar planet
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1274:Super-Jupiter
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1174:Desert planet
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531:
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518:
517:Gliese 1132 b
515:
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509:
506:
505:
503:
501:
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289:
285:
284:constellation
281:
278:
277:main-sequence
274:
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149:
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139:85.058 ± 0.08
138:
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117:
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55:
51:
48:
46:
42:
37:
30:
25:
19:
3117:
3076:
3066:New Horizons
3064:
3056:
3044:
3032:
2925:Tabby's Star
2720:
2696:Gliese 436 b
2416:Space probes
2145:Proper names
1922:Earth analog
1907:Astrobiology
1899:Habitability
1836:Microlensing
1796:White dwarfs
1766:M/Red dwarfs
1756:Herbig Ae/Be
1741:Brown dwarfs
1683:Rogue planet
1664:Interstellar
1606:Planetesimal
1375:Planetesimal
1355:Giant planet
1345:Ecumenopolis
1243:Mini-Neptune
1179:Dwarf planet
991:
867:
863:
852:
840:. Retrieved
829:
817:. Retrieved
803:
766:
762:
752:
743:
734:
722:. Retrieved
715:
691:. Retrieved
685:
625:
621:
615:
572:
566:
470:
454:
442:
405:
329:
264:
260:
259:
110:Eccentricity
63:30 July 2015
18:
3073:; Jul 2015)
2915:ASASSN-15lh
2900:(announced)
2873:Discoveries
2854:51 Pegasi b
2851:spectrum of
2841:KOI-4878.01
2836:Kepler-453b
2831:Kepler-452b
2826:Kepler-451b
2799:Kepler-442b
2794:Kepler-440b
2789:Kepler-438b
2754:HIP 11915 b
2711:HD 164595 b
2706:HD 155233 b
2690:Aldebaran b
2582:1566 Icarus
2157:before 2000
2073:Discoveries
1848:Polarimetry
1736:Binary star
1626:Rubble pile
1621:Ring system
1591:Outer space
1561:Kuiper belt
1516:Hills cloud
1471:Debris disk
1466:Cosmic dust
1395:Sub-Neptune
1380:Protoplanet
1315:Brown dwarf
1303:Other types
1259:Hot Neptune
1254:Hot Jupiter
1245:(Gas dwarf)
1220:Super-Earth
1205:Ocean world
1200:Lava planet
1194:Iron planet
1156:Terrestrial
1097:Main topics
1017:HD 219134 h
1012:HD 219134 g
1007:HD 219134 d
1002:HD 219134 f
997:HD 219134 c
992:HD 219134 b
842:19 February
819:19 February
740:"HD 219134"
628:(3). 0056.
523:55 Cancri e
512:TRAPPIST-1c
508:TRAPPIST-1b
473:HD 219134 c
443:The star's
391:HD 219134 b
332:super-Earth
261:HD 219134 b
246:Temperature
234:−0.19
161:Mean radius
135:Inclination
22:HD 219134 b
3161:Categories
3069:(flyby of
3037:(orbiting
3017:10P/Tempel
3007:(Catalina)
2986:88P/Howell
2976:15P/Finlay
2864:Wolf 1061c
2804:Kepler-444
2677:Exoplanets
2068:Exoplanets
2049:Host stars
1996:Catalogues
1819:Astrometry
1781:Subdwarf B
1718:Host stars
1691:Retrograde
1586:Oort cloud
1424:Formation
1360:Mesoplanet
1284:Super-puff
1210:Mega-Earth
1189:Ice planet
1074:Definition
1059:Exoplanets
877:1711.07745
776:1812.07222
635:1703.01430
582:1507.08532
532:References
467:Atmosphere
315:transiting
288:Cassiopeia
269:exoplanets
3151:Astronomy
3058:MESSENGER
3039:comet 67P
3002:C/2013 US
2897:EGS-zs8-1
2859:WASP-121b
2846:LkCa 15 b
2716:HD 219134
2518:Selected
2162:2000–2009
2128:1501–2000
2123:1001–1500
1811:Detection
1776:Red giant
1436:Accretion
1428:evolution
1269:Ice giant
1264:Gas giant
1215:Sub-Earth
1104:Exoplanet
976:HD 219134
870:(1): 64.
795:0035-8711
416:HD 219134
402:Host star
395:animation
389:exoplanet
370:aluminium
273:HD 219134
271:orbiting
265:HR 8832 b
148:HD 219134
114:0 (fixed)
39:Discovery
3078:Akatsuki
2955:GW151226
2943:GW150914
2935:VFTS 352
2784:KELT-4Ab
2455:Astrosat
2392: »
2118:501–1000
2098:Heaviest
2078:Extremes
1786:Subgiant
1659:Exocomet
904:59377397
660:56075932
607:45652878
494:See also
430:☉
423:☉
393:(00:53;
305:via the
3034:Rosetta
2964:Comets
2920:EGSY8p7
2881:2015 BP
2661:2015 SO
2625:2007 VE
2613:2015 TB
2601:2015 TC
2589:2015 HM
2558:2015 AZ
2534:2015 BP
2379:«
2093:Largest
2088:Nearest
1791:T Tauri
1687:Orbits
1671:Exomoon
1651:Systems
1365:Planemo
1230:Gaseous
985:Planets
882:Bibcode
724:30 July
693:31 July
640:Bibcode
587:Bibcode
575:: A72.
457:Mercury
366:calcium
336:Neptune
299:HARPS-N
282:in the
206:density
80:HARPS-N
52:of the
50:HARPS-N
3137:Portal
2892:US 708
2779:K2-24c
2774:K2-24b
2769:K2-22b
2764:K2-18b
2449:DSCOVR
2108:Kepler
2083:Firsts
1982:Tholin
1853:Timing
1771:Pulsar
1696:Trojan
1310:Blanet
1069:Planet
902:
793:
658:
605:
414:named
408:K-type
340:Uranus
229:1.847
3083:Venus
3071:Pluto
3051:Ceres
2759:K2-3d
2248:Other
2113:1–500
2038:Lists
1147:types
1142:Sizes
969:Stars
900:S2CID
872:arXiv
771:arXiv
656:S2CID
630:arXiv
603:S2CID
577:arXiv
563:(PDF)
451:Orbit
204:Mean
171:0.055
167:1.602
3046:Dawn
2520:NEOs
2424:SMAP
2389:2016
2382:2014
2237:2024
2232:2023
2227:2022
2222:2021
2217:2020
2212:2019
2207:2018
2202:2017
2197:2016
2192:2015
2187:2014
2182:2013
2177:2012
2172:2011
2167:2010
1882:list
1870:list
1858:list
1841:list
1829:list
1426:and
1144:and
844:2011
821:2011
791:ISSN
726:2015
717:NASA
695:2015
687:NASA
510:and
412:star
368:and
338:and
280:star
275:, a
263:(or
186:Mass
144:Star
2884:519
2628:191
2616:145
2537:513
1079:IAU
1019:(e)
890:doi
868:853
781:doi
767:484
648:doi
595:doi
573:584
463:).
438:Sun
313:as
286:of
3163::
3122:—
3116:—
3004:10
2741:g?
2640:24
2604:25
2592:10
2573:35
2561:43
2549:86
2135:K2
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888:.
880:.
866:.
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742:.
714:.
703:^
684:.
668:^
654:.
646:.
638:.
624:.
601:.
593:.
585:.
571:.
565:.
540:^
488:🜨
481:🜨
461:AU
410:)
372:.
361:🜨
347:🜨
295:🜨
216:cm
178:🜨
103:AU
3139::
3081:(
3049:(
2950:)
2820:f
2817:e
2814:d
2811:c
2808:b
2748:?
2746:h
2736:f
2731:d
2726:c
2721:b
2664:2
2652:6
2362:e
2355:t
2348:v
1731:B
1726:A
1052:e
1045:t
1038:v
954:e
947:t
940:v
906:.
892::
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874::
846:.
823:.
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783::
773::
746:.
728:.
697:.
662:.
650::
642::
632::
626:1
609:.
597::
589::
579::
485:R
478:R
434:K
427:R
420:M
358:R
354:E
351:M
344:R
292:R
239:g
213:g
196:E
193:M
175:R
169:±
128:d
82:)
78:(
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