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List of exoplanets and planetary debris around giant stars

Last updated February 09, 2026

This is a list of notable confirmed exoplanets and planetary debris disks around giant stars, mainly sorted by distance to the Sun.

Companion	Spectral type of host star	Mass of host star (Solar mass)	Radius of host star (Solar radius)	Mass of planet (Jupiter mass)	Radius of planet (Jupiter radius)	Orbital period of planet (day)	Eccentricity of planet	Distance (light-year)	Discovery method of companion	Discovery year of companion	References and notes
Hamal b	K1IIIb	1.50	15.19	≥1.8	–	380.8	0.25	65.8	Radial vel.	2011	Brightest exoplanet host star as viewed from Earth^[1]
Iota Draconis b (Hypatia)	K2III	1.56	11.99	16.4	–	510.8	0.70	101.2	Radial vel.	2002	The first confirmed planet or brown dwarf to be discovered around a giant star^[2]
Iota Draconis c	K2III	1.56	11.99	17.0	–	24800 (approximate)	0.46	101.2	Radial vel.	2021	Might be a brown dwarf^[3]
18 Delphini b (Arion)	G6III	2.35	7.19	≥9.21	–	982.8	0.02	245	Radial vel.	2008	^[4]
24 Boötis b	G4III-IV	1.46	10.04	≥0.91	–	30.35	0.04	308	Radial vel.	2018	^[5]
HD 139357 b	K4III	1.1–2.16	11.47	≥9.76	–	1126	0.10	370	Radial vel.	2009	^[6]
Debris disk of 51 Ophiuchi	B9.5IIIe	3.30	8.08	–	–	–	–	410	Interferometry imaging	2009	^[7]
HD 13189 b	K1II-III	1.2	38.0	≥14	–	471.6	0.28	1590	Radial vel.	2005	Might be a brown dwarf^[8]
Kepler-56b	? (RGB)	1.29	4.18	0.07	0.32	10.503	–	3030	Transit	2012	The orbits of Kepler-56 b and c are coplanar but misaligned 45° to the host star's equator^[9]
Kepler-56c	? (RGB)	1.29	4.18	0.57	0.70	21.405	–	3030	Transit	2012	The orbits of Kepler-56 c and b are coplanar but misaligned 45° to the host star's equator^[9]
Kepler-56d	? (RGB)	1.29	4.18	≥5.61	–	1002	0.20	3030	Radial vel.	2016	^[10]

References

↑ Lee, B.-C.; et al. (May 2011). "A likely exoplanet orbiting the oscillating K-giant α Arietis". Astronomy & Astrophysics. 529: A134. arXiv: 1104.4431 . Bibcode:2011A&A...529A.134L. doi:10.1051/0004-6361/201016293. S2CID 58906630.
↑ Frink, Sabine; et al. (2002). "Discovery of a Substellar Companion to the K2 III Giant Iota Draconis". The Astrophysical Journal. 576 (1): 478–484. Bibcode:2002ApJ...576..478F. CiteSeerX 10.1.1.6.5332 . doi:10.1086/341629. S2CID 12778096.
↑ Hill, Michelle L.; Kane, Stephen R.; Campante, Tiago L.; Li, Zhexing; Dalba, Paul A.; Brandt, Timothy D.; White, Timothy R.; Pope, Benjamin J. S.; Stassun, Keivan G.; Fulton, Benjamin J.; Corsaro, Enrico; Li, Tanda; Ong, J. M. Joel; Bedding, Timothy R.; Bossini, Diego; Buzasi, Derek L.; Chaplin, William J.; Cunha, Margarida S.; García, Rafael A.; Breton, Sylvain N.; Hon, Marc; Huber, Daniel; Jiang, Chen; Kayhan, Cenk; Kuszlewicz, James S.; Mathur, Savita; Serenelli, Aldo; Stello, Dennis (2021). "Asteroseismology of iota Draconis and Discovery of an Additional Long-period Companion". The Astronomical Journal. 162 (5): 211. arXiv: 2107.13583 . Bibcode:2021AJ....162..211H. doi: 10.3847/1538-3881/ac1b31 .
↑ Sato, Bun'ei; et al. (2008). "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, ξ Aquilae and HD 81688". Publications of the Astronomical Society of Japan. 60 (3): 539–550. arXiv: 0802.2590 . Bibcode:2008PASJ...60..539S. doi:10.1093/pasj/60.3.539. S2CID 18806627.
↑ Takarada, Takuya; Sato, Bun'ei; Omiya, Masashi; Harakawa, Hiroki; Nagasawa, Makiko; Izumiura, Hideyuki; Kambe, Eiji; Takeda, Yoichi; Yoshida, Michitoshi; Itoh, Yoichi; Ando, Hiroyasu; Kokubo, Eiichiro; Ida, Shigeru (2018). "Planets around the evolved stars 24 Booties and γ Libra: A 30d-period planet and a double giant-planet system in possible 7:3 MMR". Publications of the Astronomical Society of Japan. 70 (4): 59. arXiv: 1804.04008 . Bibcode:2018PASJ...70...59T. doi:10.1093/pasj/psy052.
↑ Döllinger, M. P.; et al. (2009). "Planetary companion candidates around the K giant stars 42 Draconis and HD 139 357". Astronomy and Astrophysics. 499 (3): 935–942. arXiv: 0903.3593 . Bibcode:2009A&A...499..935D. doi:10.1051/0004-6361/200810837. S2CID 15677079.
↑ Stark, Christopher C.; et al. (2009). "51 Ophiuchus: A Possible Beta Pictoris Analog Measured with the Keck Interferometer Nuller". Astrophysical Journal . 703 (2): 1188–1197. arXiv: 0909.1821 . Bibcode:2009ApJ...703.1188S. doi:10.1088/0004-637X/703/2/1188. S2CID 17938884.
↑ Hatzes, A. P.; et al. (2005). "A giant planet around the massive giant star HD 13189". Astronomy and Astrophysics . 437 (2): 743–751. Bibcode:2005A&A...437..743H. doi: 10.1051/0004-6361:20052850 .
1 2 Huber, Daniel; et al. (2013). "Stellar Spin-Orbit Misalignment in a Multiplanet System". Science. 342 (6156): 331–334. arXiv: 1310.4503 . Bibcode:2013Sci...342..331H. doi:10.1126/science.1242066. PMID 24136961.
↑ Otor, Oderah Justin; Montet, Benjamin T.; Johnson, John Asher; Charbonneau, David; Collier-Cameron, Andrew; Howard, Andrew W.; Isaacson, Howard; Latham, David W.; Lopez-Morales, Mercedes; Lovis, Christophe; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Pepe, Francesco; Piotto, Giampaolo; Phillips, David F.; Queloz, Didier; Rice, Ken; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2016). "The Orbit and Mass of the Third Planet in the Kepler-56 System". The Astronomical Journal. 152 (6): 165. arXiv: 1608.03627 . Bibcode:2016AJ....152..165O. doi: 10.3847/0004-6256/152/6/165 .

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[Lee2011-1] Lee, B.-C.; et al. (May 2011). "A likely exoplanet orbiting the oscillating K-giant α Arietis". Astronomy & Astrophysics. 529: A134. arXiv: 1104.4431 . Bibcode:2011A&A...529A.134L. doi:10.1051/0004-6361/201016293. S2CID 58906630.

[Frink2002-2] Frink, Sabine; et al. (2002). "Discovery of a Substellar Companion to the K2 III Giant Iota Draconis". The Astrophysical Journal. 576 (1): 478–484. Bibcode:2002ApJ...576..478F. CiteSeerX 10.1.1.6.5332 . doi:10.1086/341629. S2CID 12778096.

[Hill2021-3] Hill, Michelle L.; Kane, Stephen R.; Campante, Tiago L.; Li, Zhexing; Dalba, Paul A.; Brandt, Timothy D.; White, Timothy R.; Pope, Benjamin J. S.; Stassun, Keivan G.; Fulton, Benjamin J.; Corsaro, Enrico; Li, Tanda; Ong, J. M. Joel; Bedding, Timothy R.; Bossini, Diego; Buzasi, Derek L.; Chaplin, William J.; Cunha, Margarida S.; García, Rafael A.; Breton, Sylvain N.; Hon, Marc; Huber, Daniel; Jiang, Chen; Kayhan, Cenk; Kuszlewicz, James S.; Mathur, Savita; Serenelli, Aldo; Stello, Dennis (2021). "Asteroseismology of iota Draconis and Discovery of an Additional Long-period Companion". The Astronomical Journal. 162 (5): 211. arXiv: 2107.13583 . Bibcode:2021AJ....162..211H. doi: 10.3847/1538-3881/ac1b31 .

[Sato_2008-4] Sato, Bun'ei; et al. (2008). "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, ξ Aquilae and HD 81688". Publications of the Astronomical Society of Japan. 60 (3): 539–550. arXiv: 0802.2590 . Bibcode:2008PASJ...60..539S. doi:10.1093/pasj/60.3.539. S2CID 18806627.

[Takarada2018-5] Takarada, Takuya; Sato, Bun'ei; Omiya, Masashi; Harakawa, Hiroki; Nagasawa, Makiko; Izumiura, Hideyuki; Kambe, Eiji; Takeda, Yoichi; Yoshida, Michitoshi; Itoh, Yoichi; Ando, Hiroyasu; Kokubo, Eiichiro; Ida, Shigeru (2018). "Planets around the evolved stars 24 Booties and γ Libra: A 30d-period planet and a double giant-planet system in possible 7:3 MMR". Publications of the Astronomical Society of Japan. 70 (4): 59. arXiv: 1804.04008 . Bibcode:2018PASJ...70...59T. doi:10.1093/pasj/psy052.

[Döllinger_2009-6] Döllinger, M. P.; et al. (2009). "Planetary companion candidates around the K giant stars 42 Draconis and HD 139 357". Astronomy and Astrophysics. 499 (3): 935–942. arXiv: 0903.3593 . Bibcode:2009A&A...499..935D. doi:10.1051/0004-6361/200810837. S2CID 15677079.

[stark2009-7] Stark, Christopher C.; et al. (2009). "51 Ophiuchus: A Possible Beta Pictoris Analog Measured with the Keck Interferometer Nuller". Astrophysical Journal . 703 (2): 1188–1197. arXiv: 0909.1821 . Bibcode:2009ApJ...703.1188S. doi:10.1088/0004-637X/703/2/1188. S2CID 17938884.

[Hatzes_13189-8] Hatzes, A. P.; et al. (2005). "A giant planet around the massive giant star HD 13189". Astronomy and Astrophysics . 437 (2): 743–751. Bibcode:2005A&A...437..743H. doi: 10.1051/0004-6361:20052850 .

[Huber2013-9] 1 2 Huber, Daniel; et al. (2013). "Stellar Spin-Orbit Misalignment in a Multiplanet System". Science. 342 (6156): 331–334. arXiv: 1310.4503 . Bibcode:2013Sci...342..331H. doi:10.1126/science.1242066. PMID 24136961.

[Otor2016-10] Otor, Oderah Justin; Montet, Benjamin T.; Johnson, John Asher; Charbonneau, David; Collier-Cameron, Andrew; Howard, Andrew W.; Isaacson, Howard; Latham, David W.; Lopez-Morales, Mercedes; Lovis, Christophe; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Pepe, Francesco; Piotto, Giampaolo; Phillips, David F.; Queloz, Didier; Rice, Ken; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2016). "The Orbit and Mass of the Third Planet in the Kepler-56 System". The Astronomical Journal. 152 (6): 165. arXiv: 1608.03627 . Bibcode:2016AJ....152..165O. doi: 10.3847/0004-6256/152/6/165 .

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英文互译镜像站

List of exoplanets and planetary debris around giant stars

See also

References