List of exoplanets discovered in 2021

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by editing the page to add missing items, with references to reliable sources.

This list of exoplanets discovered in 2021 is a list of confirmed exoplanets that were first observed in 2021. For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information.

Former candidate

YSES 2 b had been thought to be a planet after the discovery by direct imaging. Later analysis in 2025 showed that it is a background M-dwarf star instead.

Specific exoplanet lists

Lists of exoplanets

Lists of exoplanets by year of discovery

References

  1. ↑ Gaidos, E.; Hirano, T.; Kraus, A. L.; Kuzuhara, M.; Zhang, Z.; Lee, R. A.; Salama, M.; Berger, T. A.; Grunblatt, S. K.; Ansdell, M.; Liu, M. C.; Harakawa, H.; Hodapp, K. W.; Jacobson, S.; Konishi, M.; Kotani, T.; Kudo, T.; Kurokawa, T.; Nishikawa, J.; Omiya, M.; Serizawa, T.; Tamura, M.; Ueda, A.; Vievard, S. (2021). "Zodiacal Exoplanets in Time (ZEIT) XII: A Directly-Imaged Planetary-Mass Companion to a Young Taurus M Dwarf Star". Monthly Notices of the Royal Astronomical Society. 512 (1): 583–601. arXiv:2110.08655. Bibcode:2022MNRAS.512..583G. doi:10.1093/mnras/stab3069.
  2. ↑ "Astronomers Discover Infant Planet – One of the Youngest Exoplanets Ever Observed". 23 October 2021. Archived from the original on 25 October 2021. Retrieved 25 October 2021.
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  9. 1 2 3 4 5 6 Adams, Elisabeth R.; et al. (1 August 2021). "Ultra-short-period Planets in K2. III. Neighbors are Common with 13 New Multiplanet Systems and 10 Newly Validated Planets in Campaigns 0–8 and 10". The Planetary Science Journal. 2 (4): 152. arXiv:2011.11698. Bibcode:2021PSJ.....2..152A. doi:10.3847/PSJ/ac0ea0. ISSN 2632-3338.
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  19. 1 2 3 Amado, Pedro J.; Bauer, Florian F.; Rodríguez López, Cristina; Rodríguez, Eloy; Cardona Guillén, C.; Perger, M.; Caballero, José A.; López-González, Maria J.; Muñoz Rodríguez, I.; Pozuelos, F. J.; Sánchez-Rivero, A.; Schlecker, M.; Quirrenbach, Andreas; Ribas, Ignasi; Reiners, Ansgar; Almenara, J.; Astudillo-Defru, N.; Azzaro, M.; Béjar, Victor J. S.; Bohemann, R.; Bonfils, X.; Bouchy, F.; Cifuentes, C.; Cortés-Contreras, M.; Delfosse, Xavier; Dreizler, Stefan; Forveille, Thierry; Hatzes, Artie P.; Henning, Thomas K.; Jeffers, Sandra V.; Kaminski, Adrian; Kürster, Martin; Lafarga, M.; Lodieu, Nicolas; Lovis, C.; Mayor, M.; Montes, David; Morales, Juan Carlos; Morales, Nicolás; Murgas, F.; Ortiz, José L.; Pepe, F.; Perdelwitz, V.; Pollaco, D.; Santos, N. C.; Schöfer, P.; Schweitzer, A.; Ségransan, N. C.; Shan, Y.; Stock, S.; Tal-Or, Lev; Udry, S.; Zapatero-Osorio, María Rosa; Zechmeister, Mathias (28 May 2021). "The CARMENES search for exoplanets around M dwarfs". Astronomy & Astrophysics. 650: A188. arXiv:2105.13785. doi:10.1051/0004-6361/202140633. S2CID 235248027.
  20. 1 2 3 4 5 6 7 8 Teng, Huan-Yu; Sato, Bun'ei; Takarada, Takuya; Omiya, Masashi; Harakawa, Hiroki; Izumiura, Hideyuki; Kambe, Eiji; Takeda, Yoichi; Yoshida, Michitoshi; Itoh, Yoichi; Ando, Hiroyasu; Kokubo, Eiichiro (2021). "Regular radial velocity variations in nine G- and K-type giant stars: Eight planets and one planet candidate". Publications of the Astronomical Society of Japan. 74: 92–127. arXiv:2112.07169. doi:10.1093/pasj/psab112.
  21. ↑ Lillo-Box, J.; et al. (2021), "HD 22496 b: The first ESPRESSO stand-alone planet discovery", Astronomy & Astrophysics, 654: A60, arXiv:2109.00226, Bibcode:2021A&A...654A..60L, doi:10.1051/0004-6361/202141714, S2CID 237371680
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  26. 1 2 3 4 5 6 7 Bakos, G. á.; Hartman, J. D.; Bhatti, W.; Csubry, Z.; Penev, K.; Bieryla, A.; Latham, D. W.; Quinn, S.; Buchhave, L. A.; Kovács, G.; Torres, Guillermo; Noyes, R. W.; Falco, E.; Béky, Bence; Szklenár, T. (1 July 2021). "HAT-P-58b–HAT-P-64b: Seven Planets Transiting Bright Stars*". The Astronomical Journal. 162 (1): 31. arXiv:2007.05528. Bibcode:2021AJ....162....7B. doi:10.3847/1538-3881/abf637. ISSN 0004-6256.
  27. 1 2 3 4 Jordán, A.; et al. (2022). "HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs". The Astronomical Journal. 163 (3): 125. arXiv:2112.01928. Bibcode:2022AJ....163..125J. doi:10.3847/1538-3881/ac4a77. S2CID 244896205.
  28. 1 2 3 4 5 6 7 8 9 10 11 12 13 Rosenthal, Lee J.; et al. (2021). "The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades". The Astrophysical Journal Supplement Series. 255 (1): 8. arXiv:2105.11583. Bibcode:2021ApJS..255....8R. doi:10.3847/1538-4365/abe23c. S2CID 235186973.
  29. 1 2 Sozzetti, A.; et al. (2021). "A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130)". Astronomy & Astrophysics. 648: A75. arXiv:2101.12300. Bibcode:2021A&A...648A..75S. doi:10.1051/0004-6361/202040034. S2CID 231728514.
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  31. 1 2 Ahrer, E.; et al. (2021). "The HARPS search for southern extra-solar planets XLV. Two Neptune mass planets orbiting HD 13808: a study of stellar activity modelling's impact on planet detection". Monthly Notices of the Royal Astronomical Society. 503 (1): 1248–1263. arXiv:2102.03387. Bibcode:2021MNRAS.503.1248A. doi:10.1093/mnras/stab373.
  32. 1 2 3 Jeong, G.; Lee, B. C.; Park, M. G.; Bang, T. Y.; Han, I. (2022). "Search for exoplanets around northern circumpolar stars". Astronomy & Astrophysics. 662: A12. arXiv:2111.08899. doi:10.1051/0004-6361/202142379. S2CID 244270271.
  33. 1 2 3 4 5 6 Demangeon, O. D. S.; et al. (2021), "The SOPHIE search for northern extrasolar planets", Astronomy & Astrophysics, 653: A78, arXiv:2107.05089, Bibcode:2021A&A...653A..78D, doi:10.1051/0004-6361/202141079, S2CID 235795175
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  35. 1 2 Scarsdale, Nicholas; et al. (2021). "TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935". The Astronomical Journal. 162 (5): 215. arXiv:2110.06885. Bibcode:2021AJ....162..215S. doi:10.3847/1538-3881/ac18cb. S2CID 238743956.
  36. 1 2 Barragán, O.; et al. (2022). "The young HD 73583 (TOI-560) planetary system: Two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf". Monthly Notices of the Royal Astronomical Society. 514 (2): 1606–1627. arXiv:2110.13069. doi:10.1093/mnras/stac638.
  37. ↑ Zhang, Michael; Knutson, Heather A.; Wang, Lile; Dai, Fei; Barragán, Oscar (2022). "Escaping Helium from TOI 560.01, a Young Mini-Neptune". The Astronomical Journal. 163 (2): 67. arXiv:2110.13150. Bibcode:2022AJ....163...67Z. doi:10.3847/1538-3881/ac3fa7. S2CID 239885237.
  38. 1 2 El Mufti, Mohammed; et al. (1 January 2023). "TOI 560: Two Transiting Planets Orbiting a K Dwarf Validated with iSHELL, PFS, and HIRES RVs". The Astronomical Journal. 165 (1): 10. arXiv:2112.13448. Bibcode:2023AJ....165...10E. doi:10.3847/1538-3881/ac9834. ISSN 0004-6256.
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  44. 1 2 Azevedo Silva, T.; et al. (2022). "The HD 137496 system: A dense, hot super-Mercury and a cold Jupiter". Astronomy & Astrophysics. 657: A68. arXiv:2111.08764. Bibcode:2022A&A...657A..68A. doi:10.1051/0004-6361/202141520. S2CID 243809625.
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