List of exoplanets discovered in 2021
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.
Specific exoplanet lists
Lists of exoplanets
Lists of exoplanets by year of discovery
References
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^ a b c d e f g h 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 .
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^ Lam, Kristine W. F.; et al. (2021). "GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star". Science . 374 (6572): 1271–1275. arXiv :2112.01309 . Bibcode :2021Sci...374.1271L . doi :10.1126/science.aay3253 . PMID 34855492 . S2CID 244799656 .
^ Trifonov, T.; et al. (2021). "A nearby transiting rocky exoplanet that is suitable for atmospheric investigation". Science . 371 (6533): 1038–1041. arXiv :2103.04950 . Bibcode :2021Sci...371.1038T . doi :10.1126/science.abd7645 . PMID 33674491 . S2CID 232124642 .
^ Toledo-Padrón, B.; et al. (2021). "A super-Earth on a close-in orbit around the M1V star GJ 740". Astronomy & Astrophysics . 648 : A20. arXiv :2102.09441 . doi :10.1051/0004-6361/202040099 . S2CID 231951695 .
^ Maldonado, J.; et al. (2021). "HADES RV programme with HARPS-N at TNG". Astronomy & Astrophysics . 651 : A93. arXiv :2105.06155 . Bibcode :2021A&A...651A..93M . doi :10.1051/0004-6361/202141141 . S2CID 234482717 .
^ a b c d e f g 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 .
^ a b c d 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 .
^ a b c d e f g h i j k l m 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 .
^ a b 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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^ a b 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 .
^ a b c 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 .
^ a b c d e f Demangeon, O. D. S.; et al. (2021), "The SOPHIE search for northern extrasolar planets", Astronomy & Astrophysics , 653 : A78, arXiv :2107.05089 , doi :10.1051/0004-6361/202141079 , S2CID 235795175
^ Hobson, Melissa J.; et al. (2021). "A Transiting Warm Giant Planet around the Young Active Star TOI-201" . The Astronomical Journal . 161 (5): 235. arXiv :2103.02685 . Bibcode :2021AJ....161..235H . doi :10.3847/1538-3881/abeaa1 . S2CID 232110390 .
^ a b 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 .
^ a b 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 .
^ 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 .
^ a b 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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^ a b Sreenivas, K. R.; Perdelwitz, V.; Tal-Or, L.; Trifonov, T.; Zucker, S.; Mazeh, T. (2022). "Analysis of the public HARPS/ESO spectroscopic archive". Astronomy & Astrophysics . 660 : A124. arXiv :2112.09029 . doi :10.1051/0004-6361/202142612 . S2CID 245219286 .
^ Tofflemire, Benjamin M.; et al. (2021). "TESS Hunt for Young and Maturing Exoplanets (THYME). V. A Sub-Neptune Transiting a Young Star in a Newly Discovered 250 Myr Association" . The Astronomical Journal . 161 (4): 171. arXiv :2102.06066 . Bibcode :2021AJ....161..171T . doi :10.3847/1538-3881/abdf53 . S2CID 231879915 .
^ a b Osborn, H. P.; et al. (2021). "A hot mini-Neptune in the radius valley orbiting solar analogue HD 110113" . Monthly Notices of the Royal Astronomical Society . 502 (4): 4842–4857. arXiv :2101.04745 . Bibcode :2021MNRAS.502.4842O . doi :10.1093/mnras/stab182 .
^ a b 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 .
^ a b Eisner, N. L.; et al. (2021). "Planet Hunters TESS III: Two transiting planets around the bright G dwarf HD 152843" . Monthly Notices of the Royal Astronomical Society . 505 (2): 1827–1840. arXiv :2106.04603 . doi :10.1093/mnras/stab1253 .
^ Palatnick, Skyler; et al. (2021). "Validation of HD 183579b Using Archival Radial Velocities: A Warm Neptune Orbiting a Bright Solar Analog" . The Astrophysical Journal Letters . 909 (1): L6. arXiv :2101.12137 . Bibcode :2021ApJ...909L...6P . doi :10.3847/2041-8213/abe0bb . S2CID 231719821 .
^ Gan, Tianjun; et al. (2021). "HD 183579b: A Warm Sub-Neptune Transiting a Solar Twin Detected by TESS" . Monthly Notices of the Royal Astronomical Society . 507 (2): 2220–2240. arXiv :2107.14015 . doi :10.1093/mnras/stab2224 .
^ Bonfanti, A.; et al. (2023). "TOI-1055 b: Neptunian planet characterised with HARPS, TESS, and CHEOPS". Astronomy & Astrophysics . 671 : L8. arXiv :2302.10664 . Bibcode :2023A&A...671L...8B . doi :10.1051/0004-6361/202245607 . S2CID 257050671 .
^ Lubin, Jack; et al. (2022), "TESS-Keck Survey. IX. Masses of Three Sub-Neptunes Orbiting HD 191939 and the Discovery of a Warm Jovian plus a Distant Substellar Companion" , The Astronomical Journal , 163 (2): 101, arXiv :2108.02208 , Bibcode :2022AJ....163..101L , doi :10.3847/1538-3881/ac3d38 , S2CID 236924440
^ Orell-Miquel, J. (2023). "HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone". Astronomy & Astrophysics . 669 : A40. arXiv :2211.00667 . Bibcode :2023A&A...669A..40O . doi :10.1051/0004-6361/202244120 . S2CID 253197272 .
^ Heidari, N.; et al. (2022). "HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star". Astronomy & Astrophysics . 658 : A176. arXiv :2110.08597 . Bibcode :2022A&A...658A.176H . doi :10.1051/0004-6361/202141429 . S2CID 239016573 .
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^ Jones, M. I.; Wittenmyer, R.; Aguilera-Gómez, C.; Soto, M. G.; Torres, P.; Trifonov, T.; Jenkins, J. S.; Zapata, A.; Sarkis, P.; Zakhozhay, O.; Brahm, R.; Ramírez, R.; Santana, F.; Vines, J. I.; Díaz, M. R. (February 2021). "Four Jovian planets around low-luminosity giant stars observed by the EXPRESS and PPPS" (PDF) . Astronomy & Astrophysics . 646 : A131. arXiv :2006.01277 . Bibcode :2021A&A...646A.131J . doi :10.1051/0004-6361/202038555 . ISSN 0004-6361 . S2CID 219179316 .
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^ Smith, A M S.; et al. (2021). "K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant" . Monthly Notices of the Royal Astronomical Society . 510 (4): 5035–5049. arXiv :2111.14660 . Bibcode :2022MNRAS.510.5035S . doi :10.1093/mnras/stab3497 .
^ Zhang, Jingwen; et al. (2021). "Long-period Jovian Tilts the Orbits of Two sub-Neptunes Relative to Stellar Spin Axis in Kepler-129" . The Astronomical Journal . 162 (3): 89. arXiv :2105.03446 . Bibcode :2021AJ....162...89Z . doi :10.3847/1538-3881/ac0634 . S2CID 234338914 .
^ Dalba, Paul A.; et al. (2021), "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit" , The Astronomical Journal , 162 (4): 154, arXiv :2107.06901 , Bibcode :2021AJ....162..154D , doi :10.3847/1538-3881/ac134b , S2CID 235898945
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^ Ryu, Yoon-Hyun; et al. (2021). "Shortest Microlensing Event with a Bound Planet: KMT-2016-BLG-2605" . The Astronomical Journal . 162 (3): 96. arXiv :2104.07906 . Bibcode :2021AJ....162...96R . doi :10.3847/1538-3881/ac062a . S2CID 233289612 .
^ a b c Han, Cheongho; et al. (2021). "Three faint-source microlensing planets detected via the resonant-caustic channel". Astronomy & Astrophysics . 655 : A21. arXiv :2109.07068 . Bibcode :2021A&A...655A..21H . doi :10.1051/0004-6361/202141517 . S2CID 237513708 .
^ Han, Cheongho; et al. (2021). "KMT-2018-BLG-1025Lb: Microlensing super-Earth planet orbiting a low-mass star". Astronomy & Astrophysics . 649 : A90. arXiv :2102.01890 . Bibcode :2021A&A...649A..90H . doi :10.1051/0004-6361/202039817 . S2CID 231786450 .
^ Han, Cheongho; et al. (2021), "KMT-2018-BLG-1743: Planetary microlensing event occurring on two source stars", Astronomy & Astrophysics , 652 : A145, arXiv :2107.00155 , Bibcode :2021A&A...652A.145H , doi :10.1051/0004-6361/202140923 , S2CID 235694685
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^ Han, Cheongho; Gould, Andrew; Albrow, Michael D.; Chung, Sun-Ju; Hwang, Kyu-Ha; Youn Kil Jung; Kim, Doeon; Lee, Chung-Uk; Mao, Shude; Ryu, Yoon-Hyun; Shin, In-Gu; Shvartzvald, Yossi; Yee, Jennifer C.; Zang, Weicheng; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Hyoun-Woo; Kim, Seung-Lee; Lee, Dong-Joo; Lee, Yongseok; Park, Byeong-Gon; Pogge, Richard W.; Kim, Chun-Hwey (2022). "KMT-2018-BLG-1988Lb: Microlensing super-Earth orbiting a low-mass disk dwarf". Astronomy & Astrophysics . 658 : A62. arXiv :2111.08955 . Bibcode :2022A&A...658A..62H . doi :10.1051/0004-6361/202142077 . S2CID 244270928 .
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