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.

Name	Mass (`M`_J)	Radius (`R`_J)	Period (days)	Semi-major axis (AU)	Temp. (K)	Discovery method	Distance (ly)	Host star mass (`M`_☉)	Host star temp. (K)	Remarks
HD 108236 f		0.17406^+0.00482 _−0.00437	29.54255±0.00069	0.1759±0.0037		transit	211	0.853±0.047	5720.0±50.0	^[1]^[2]
NGTS-14Ab	0.092±0.012	0.444±0.030	3.5357173±0.0000069	0.0403±0.0071	1143±139	transit	1060	0.898±0.035	5187±11	^[3]
TOI-1259Ab	0.441^+0.049 _−0.047	1.022^+0.030 _−0.037	3.4779780^+0.0000019 _−0.0000017	0.04070^+0.00114 _−0.00110	936	transit	385±1	0.68^+0.1 _−0.01	4775±100	Also white dwarf on a wide orbit^[4]
NGTS-13b	4.84±0.44	1.142±0.046	4.12	0.0549^+0.0015 _−0.0025	1605±30	transit	2150	1.30^+0.11 _−0.18	5819±73	^[5]
TOI-628 b	6.33^+0.29 _−0.31	1.060^+0.041 _−0.034	3.4095675^+0.0000070 _−0.0000069	0.04860^+0.00080 _−0.00094	1586⁺⁵² ₋₄₀	transit	582	1.311^+0.066 _−0.075	6250⁺²²⁰ ₋₁₉₀	Host star also known as HD 288842^[6]
TOI-640 b	0.88±0.16	1.771^+0.060 _−0.056	5.0037775±0.0000048	0.06608^+0.00098 _−0.0011	1749⁺²⁶ ₋₃₀	transit	1115	1.536^+0.069 _−0.076	6460⁺¹³⁰ ₋₁₅₀	^[6]
TOI-1333 A b	2.37±0.24	1.396^+0.056 _−0.054	4.720219±0.000011	0.0626^+0.0011 _−0.0012	1679⁺³⁵ ₋₃₄	transit	653	1.464^+0.076 _−0.079	6274±97	Host star also known as BD+47 3521A^[6]
TOI-1478 b	0.847^+0.052 _−0.048	1.061^+0.040 _−0.038	10.180249±0.000015	0.0903^+0.0018 _−0.0013	918±11	transit	498	0.946^+0.059 _−0.041	5595⁺⁸³ ₋₈₁	^[6]
TOI-1601 b	0.99±0.11	1.239^+0.046 _−0.039	5.331751±0.000011	0.06864^+0.00079 _−0.00075	1619⁺²⁴ ₋₂₃	transit	1096	1.517^+0.053 _−0.049	5948⁺⁸⁷ ₋₈₉	^[6]
OGLE-2019-BLG-0960Lb	0.0071±0.0027			1.75±0.55		microlensing	2900±1000	0.45±0.15		Smallest planet discovered by microlensing^[7]
HD 110113 b	0.0143±0.0020	0.183±0.011	2.541^+0.0005 _−0.001	0.035±0.001	1371±14	transit	346.5±2.3	0.99±0.08	5730	Radius gap planet, host star also known as TOI-755^[8]
HD 110113 c	0.0330±0.0038		6.744^+0.008 _−0.009	0.068^+0.001 _−0.002	990±10	radial vel.	346.5±2.3	0.99±0.08	5730	Host star also known as TOI-755^[8]
KOI-5Ab	0.179	0.63	5			transit	1870±70	1.13	5861	Also called TOI-1241b^[9]^[10]
TOI-178b	0.0047^+0.0012 _−0.0013	0.102±0.006	1.914558±0.000018	0.02607±0.00078	1040⁺²² ₋₂₁	transit	205.16±0.03	0.650^+0.027 _−0.029	4316±70	^[11]
TOI-178c	0.015^+0.0017 _−0.0021	0.149^+0.01 _−0.008	3.238450^+0.000020 _−0.000019	0.0370±0.0011	873±18	transit	205.16±0.03	0.650^+0.027 _−0.029	4316±70	^[11]
TOI-178d	0.0094^+0.0025 _−0.0032	0.229±0.006	6.557700±0.000016	0.0592±0.0018	690±14	transit	205.16±0.03	0.650^+0.027 _−0.029	4316±70	^[11]
TOI-178e	0.0121^+0.0039 _−0.0029	0.197^+0.007 _−0.008	9.961881±0.000042	0.0783^+0.0023 _−0.0024	600±12	transit	205.16±0.03	0.650^+0.027 _−0.029	4316±70	^[11]
TOI-178f	0.0242^+0.0052 _−0.0047	0.204±0.009	15.231915^+0.000115 _−0.000095	0.1039±0.0031	521±11	transit	205.16±0.03	0.650^+0.027 _−0.029	4316±70	^[11]
TOI-178g	0.0123^+0.0041 _−0.0050	0.256^+0.012 _−0.011	20.70950^+0.00014 _−0.00011	0.1275^+0.0038 _−0.0039	470±10	transit	205.16±0.03	0.650^+0.027 _−0.029	4316±70	^[11]
HD 183579 b	0.0620^+0.0126 _−0.0123	0.317^+0.013 _−0.011	17.471278^+0.000058 _−0.000060	0.1334^+0.0062 _−0.0061	769⁺¹⁷ ₋₁₃	transit	186.1±0.8	1.031^+0.025 _−0.026	5788±44	Host star also known as TOI-1055^[12]
KMT-2019-BLG-0371b	7.70^+11.34 _−3.90			0.79^+0.14 _−0.16		microlensing	23000⁺³⁰⁰⁰ ₋₄₀₀₀	0.09^+0.14 _−0.05		Multiple solutions for orbital separation^[13]
HD 5278 b	0.0245^+0.0047 _−0.0044	0.219±0.004	14.339156^+0.000049 _−0.000047	0.1202±0.0013	943±13	transit	183.1±2.7	1.126^+0.036 _−0.035	6203±64	Host star also known as TOI-130^[14]
HD 5278 c	0.0579^+0.0057 _−0.0060		0.2416±0.0027	0.1202±0.0013	943±13	radial vel.	183.1±2.7	1.126^+0.036 _−0.035	6203±64	Host star also known as TOI-130^[14]
KMT-2018-BLG-1025Lb	0.0191^+0.0258 _−0.0104			1.305^+0.194 _−0.227		microlensing	22000±3000	0.219^+0.297 _−0.120		Multiple solutions for orbital parameters^[15]
Gliese 1151b	0.0079±0.0016		2.02	0.01735^+0.00065 _−0.00070		radial vel.	26.23±0.01	0.154	3143±26	^[16] Refuted a month after confirmation.^[17]
TOI-558b	3.61±0.15	1.086^+0.041 _−0.038	14.574071±0.000026	0.1291^+0.0020 _−0.0021	1061⁺¹³ ₋₁₂	transit	1312±17	1.349^+0.064 _−0.065	6466⁺⁹⁵ ₋₉₃	^[18]
TOI-559b	6.01^+0.24 _−0.23	1.091^+0.028 _−0.025	6.9839095±0.0000051	0.0723±0.0013	1180⁺¹⁸ ₋₁₆	transit	761±7	1.026±0.057	5925⁺⁸⁵ ₋₇₆	^[18]
HD 13808 b	0.0346		14.2	0.11		radial vel.	92.2	0.771±0.022	5035±50	Candidate since 2011, confirmed in 2021^[19]
HD 13808 c	0.0315		53.8	0.26		radial vel.	92.2	0.771±0.022	5035±50	Candidate since 2011, confirmed in 2021^[19]
TOI 451 b		0.1732^+0.0134 _−0.0116	1.858701^+0.000027 _−0.000033	0.0271^+0.0023 _−0.0038	1524⁺¹⁰⁰ ₋₆₀	transit	405.1±1.3	0.94±0.025	5550±56	Planets orbiting primary of wide binary system.^[20]^[21] Host star also known as CD-38 1467.
TOI 451 c		0.2741±0.0125	9.192523^+0.000064 _−0.000084	0.0771^+0.0066 _−0.0093	903⁺⁵³ ₋₃₆	transit	405.1±1.3	0.94±0.025	5550±56	Planets orbiting primary of wide binary system.^[20]^[21] Host star also known as CD-38 1467.
TOI 451 d		0.3598±0.0134	16.364981^+0.000047 _−0.000049	0.1255^+0.0057 _−0.0065	708⁺¹⁵ ₋₁₂	transit	405.1±1.3	0.94±0.025	5550±56	Planets orbiting primary of wide binary system.^[20]^[21] Host star also known as CD-38 1467.
HD 110082 b		0.2857±0.0089	10.18271±0.00004	0.113^+0.009 _−0.013		transit	342.8±0.9	1.21±0.06	6200±100	Orbiting a primary of wide binary system.^[22] Host star also known as TOI-1098.
OGLE-2018-BLG-0567Lb	0.32^+0.34 _−0.16			2.72^+0.49 _−0.55		microlensing	23000±3000	0.24^+0.16 _−0.13		^[23]
OGLE-2018-BLG-0962Lb	1.37^+0.80 _−0.72			3.57^+0.68 _−1.02		microlensing	21000⁺³⁰⁰⁰ ₋₅₀₀₀	0.55^+0.32 _−0.29		^[23]
Gliese 740 b	0.0093±0.0016		2.37756^+0.00013 _−0.00011	0.029±0.001	829⁺⁴⁰ ₋₅₀	radial vel.	36.21±0.02	0.58±0.06	3913±21	^[24]
OGLE-2018-BLG-1428Lb	0.77^+0.77 _−0.53			3.30^+0.59 _−0.83		microlensing	20000⁺³⁰⁰⁰ ₋₅₀₀₀	0.43^+0.33 _−0.22		^[25]
LHS 1478 b	0.0073±0.0006	0.111±0.004	1.9495378^+0.0000040 _−0.0000041	0.01848^+0.00061 _−0.0006	595⁺¹⁰ ₋₉	transit	59.40±0.03	0.236±0.012	3381±54	^[26]Host star also known as TOI-1640 or G 245-61
TOI-1685 b	0.0121±0.030	0.131±0.006	0.6691425±0.0000037	0.01156±0.00009	1052±21	transit	122.68±0.09	0.495±0.019	3434±51	^[27]^[28]Host star also known as UCAC4 666-026266
TOI-1685 c	0.0290±0.0065		9.025^+0.104 _−0.119		449.1±6.9	radial vel.	122.68±0.09	0.495±0.019	3434±51	Unconfirmed^[27]
KMT-2020-BLG-0414Lb	0.0032			0.15		microlensing	3300±300	0.3		Also a brown dwarf with mass 17`M`_J in the system at 15 AU separation^[29]
HD 39474 b	0.42^+0.05 _−0.03	1.008^+0.012 _−0.015	52.97818^+0.00004 _−0.00004	0.30^+0.02 _−0.03	759⁺³⁷ ₋₂₆	transit	372.5±1.1	1.316±0.027	6394±75	Host star also known as TOI-201^[30]
Gliese 486 b	0.0089±0.0004	0.117±0.006	1.467119^+0.000031 _−0.000030	0.01734^+0.00026 _−0.00027	701±13	transit	26.344±0.013	0.323±0.015	3340±54	Planet may have a measurable atmosphere^[31]
NGTS-15b	0.751^+0.102 _−0.088	1.10±0.10	3.27623±0.00001	0.0441±0.0046	1146±47	transit	2580±60	0.995±0.015	5600±150	^[32]
NGTS-16b	0.667^+0.157 _−0.129	1.30^+0.13 _−0.12	4.84532±0.00002	0.0523±0.0064	1177±59	transit	2910⁺⁹⁵ ₋₇₅	1.002±0.011	5550±150	^[32]
NGTS-17b	0.764^+0.195 _−0.164	1.24±0.11	3.24253±0.00001	0.0391±0.0043	1457±50	transit	3420±90	1.025^+0.015 _−0.014	5650±100	^[32]
NGTS-18b	0.409^+0.081 _−0.063	1.21±0.18	3.05125±0.00001	0.0448±0.0068	1381⁺⁵⁵ ₋₅₃	transit	3610±140	1.003^+0.020 _−0.012	5610±150	^[32]
OGLE-2019-BLG-1053Lb	0.0078^+0.0037 _−0.0031			3.4±0.5		microlensing	22000⁺³⁰⁰⁰ ₋₂₀₀₀	0.61^+0.29 _−0.24		^[33]
TOI-1634 b	0.0313±0.0030	0.158±0.007	0.9893457±0.0000034	0.01491±0.00015	921±21	transit	114.40±0.08	0.452±0.014	3472±48	^[28]^[34]
KMT-2019-BLG-1715	2.56^+1.13 _−1.16			3.32^+0.82 _−0.92		microlensing	13000±3000	0.61^+0.27 _−0.28		Multiple solutions for orbital separation, also 0.15`M`_☉ red dwarf in the system.^[35]
OGLE-2018-BLG-1185b	0.026^+0.025 _−0.015			1.54^+0.18 _−0.22		microlensing	24000⁺²⁰⁰⁰ ₋₃₀₀₀	0.37^+0.35 _−0.21		Multiple solutions for planet and star masses.^[36]
TOI-1260 b	0.0271^+0.0043 _−0.0037	0.208^+0.009 _−0.008	3.12748^+0.000047 _−0.000038	0.0366^+0.0022 _−0.0036	860⁺⁴⁷ ₋₃₁	transit	239.5±0.3	0.66±0.01	4227±85	^[37]
TOI-1260 c	0.0373^+0.0106 _−0.0102	0.252±0.013	7.49325^+0.00015 _−0.00013	0.0656^+0.0039 _−0.0065	643⁺³⁵ ₋₂₃	transit	239.5±0.3	0.66±0.01	4227±85	^[37]
KMT-2018-BLG-1976Lb	1.96^+1.23 _−1.12			2.04^+0.72 _−0.83		microlensing	19000±2000	0.65^+0.41 _−0.37		^[38]
KMT-2018-BLG-1996Lb	1.22^+0.72 _−0.63			1.97^+0.51 _−0.25		microlensing	19000±2000	0.69^+0.40 _−0.38		^[38]
OGLE-2019-BLG-0954Lb	14.2^+9.9 _−7.5			2.65^+0.89 _−1.20		microlensing	12000⁺¹⁰⁰⁰ ₋₂₀₀₀	0.80^+0.55 _−0.42		^[38]
YSES 2b	6.3^+1.6 _−0.9			115		imaging	356.4±0.5	1.10±0.03	4749±40	^[39]
KMT-2016-BLG-2605b	0.8^+1.2 _−0.4			0.68±0.11		microlensing	21000±3000	0.065^+0.10 _−0.035		^[40]
TOI-1431 b	3.14^+0.19 _−0.18	1.51±0.06	2.65022±0.00001	0.047±0.002	2370±100	transit	488±3	1.90^+0.10 _−0.08	7690⁺⁴⁰⁰ ₋₂₅₀	Also known as MASCARA-5b^[41]^[42]

Specific exoplanet lists

Lists of exoplanets

Lists of exoplanets by year of discovery

List of exoplanets discovered before 2000 (31)
List of exoplanets discovered between 2000–2009 (377)
List of exoplanets discovered in 2010 (109)
List of exoplanets discovered in 2011 (179)
List of exoplanets discovered in 2012 (149)
List of exoplanets discovered in 2013 (151)
List of exoplanets discovered in 2014 (870)
List of exoplanets discovered in 2015 (149)
List of exoplanets discovered in 2016 (1497)
List of exoplanets discovered in 2017 (158)
List of exoplanets discovered in 2018 (303)
List of exoplanets discovered in 2019 (172)
List of exoplanets discovered in 2020 (249)
List of exoplanets discovered in 2021 (59)
List of exoplanets discovered in 2022 (313)
List of exoplanets discovered in 2023 (307)
List of exoplanets discovered in 2024 (238)

References

^ "HD 108236 f". exoplanet.eu. Retrieved 4 January 2021.
^ CHEOPS observations of the HD 108236 planetary system: A fifth planet, improved ephemerides, and planetary radii
^ Smith, A. M. S.; Acton, J. S.; Anderson, D. R.; Armstrong, D. J.; Bayliss, D.; Belardi, C.; Bouchy, F.; Brahm, R.; Briegal, J. T.; Bryant, E. M.; Burleigh, M. R.; Cabrera, J.; Chaushev, A.; Cooke, B. F.; Costes, J. C.; Csizmadia, Sz.; Eigmüller, Ph.; Erikson, A.; Gill, S.; Gillen, E.; Goad, M. R.; Günther, M. N.; Henderson, B. A.; Hogan, A.; Jordán, A.; Lendl, M.; McCormac, J.; Moyano, M.; Nielsen, L. D.; et al. (2021), NGTS-14Ab: a Neptune-sized transiting planet in the desert, arXiv:2101.01470
^ Martin, David V.; El-Badry, Kareem; Vedad Kunovac Hodžić; Triaud, Amaury H. M. J.; Angus, Ruth; Birky, Jessica; Foreman-Mackey, Daniel; Hedges, Christina; Montet, Benjamin T.; Murphy, Simon J.; Santerne, Alexandre; Stassun, Keivan G.; Stephan, Alexander P.; Wang, Ji; Benni, Paul; Krushinsky, Vadim; Chazov, Nikita; Mishevskiy, Nikolay; Ziegler, Carl; Soubkiou, Abderahmane; Benkhaldoun, Zouhair; Caldwell, Douglas A.; Collins, Karen; Henze, Christopher E.; Guerrero, Natalia M.; Jenkins, Jon M.; Latham, David W.; Levine, Adam; McDermott, Scott; et al. (2021), TOI-1259Ab – a gas giant planet with 2.7% deep transits and a bound white dwarf companion, arXiv:2101.02707
^ Grieves, Nolan; Nielsen, Louise D.; Vines, Jose I.; Bryant, Edward M.; Gill, Samuel; Bouchy, François; Lendl, Monika; Bayliss, Daniel; Eigmueller, Philipp; Segransan, Damien; Acton, Jack S.; Anderson, David R.; Burleigh, Matthew R.; Casewell, Sarah L.; Chaushev, Alexander; Cooke, Benjamin F.; Gillen, Edward; Goad, Michael R.; Günther, Maximilian N.; Henderson, Beth A.; Hogan, Aleisha; Jenkins, James S.; Alves, Douglas R.; Jordán, Andrés; McCormac, James; Moyano, Maximiliano; Queloz, Didier; Raynard, Liam; Seidel, Julia V.; et al. (2021), NGTS-13b: A hot 4.8 Jupiter-mass planet transiting a subgiant star, arXiv:2101.04245
^ ^a ^b ^c ^d ^e Rodriguez, Joseph E.; Quinn, Samuel N.; Zhou, George; Vanderburg, Andrew; Nielsen, Louise D.; Wittenmyer, Robert A.; Brahm, Rafael; Reed, Phillip A.; Huang, Chelsea X.; Vach, Sydney; Ciardi, David R.; Oelkers, Ryan J.; Stassun, Keivan G.; Hellier, Coel; Scott Gaudi, B.; Eastman, Jason D.; Collins, Karen A.; Bieryla, Allyson; Christian, Sam; Latham, David W.; Carleo, Ilaria; Wright, Duncan J.; Matthews, Elisabeth; Gonzales, Erica J.; Ziegler, Carl; Dressing, Courtney D.; Howell, Steve B.; Tan, Thiam-Guan; Wittrock, Justin; et al. (2021), TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full Frame Images, arXiv:2101.01726
^ Yee, Jennifer C.; Zang, Weicheng; Udalski, Andrzej; Ryu, Yoon-Hyun; Green, Jonathan; Hennerley, Steve; Marmont, Andrew; Sumi, Takahiro; Mao, Shude; Gromadzki, Mariusz; Mróz, Przemek; Skowron, Jan; Poleski, Radoslaw; Szymański, Michał K.; Soszyński, Igor; Pietrukowicz, Paweł; Kozłowski, Szymon; Ulaczyk, Krzysztof; Rybicki, Krzysztof A.; Iwanek, Patryk; Wrona, Marcin; Albrow, Michael D.; Chung, Sun-Ju; Gould, Andrew; Han, Cheongho; Hwang, Kyu-Ha; Youn Kil Jung; Kim, Hyoun-Woo; Shin, In-Gu; et al. (2021), OGLE-2019-BLG-0960Lb: The Smallest Microlensing Planet, arXiv:2101.04696
^ ^a ^b Osborn, H. P.; Armstrong, D. J.; Adibekyan, V.; Collins, K. A.; Delgado-Mena, E.; Howell, S. B.; Hellier, C.; King, G. W.; Lillo-Box, J.; Nielsen, L. D.; Otegi, J. F.; Santos, N. C.; Ziegler, C.; Anderson, D. R.; Briceño, C.; Burke, C.; Bayliss, D.; Barrado, D.; Bryant, E. M.; Brown, D J A.; Barros, S C C.; Bouchy, F.; Caldwell, D. A.; Conti, D. M.; Díaz, R. F.; Dragomir, D.; Deleuil, M.; Demangeon, O D S.; Dorn, C.; et al. (2021), "A hot mini-Neptune in the radius valley orbiting solar analogue HD 110113", Monthly Notices of the Royal Astronomical Society, arXiv:2101.04745, Bibcode:2021MNRAS.tmp..240O, doi:10.1093/mnras/stab182{{citation}}: CS1 maint: bibcode (link) CS1 maint: unflagged free DOI (link)
^ Hirsch, Lea A.; Ciardi, David R.; Howard, Andrew W.; Everett, Mark E.; Furlan, Elise; Saylors, Mindy; Horch, Elliott P.; Howell, Steve B.; Teske, Johanna; Marcy, Geoffrey W. (2017), "ASSESSING THE EFFECT OF STELLAR COMPANIONS FROM HIGH-RESOLUTION IMAGING OF Kepler OBJECTS OF INTEREST", The Astronomical Journal, 153 (3): 117, arXiv:1701.06577, Bibcode:2017AJ....153..117H, doi:10.3847/1538-3881/153/3/117, S2CID 39321033{{citation}}: CS1 maint: unflagged free DOI (link)
^ AT LAST! CONFIRMATION OF KEPLER'S SECOND PLANETARY CANDIDATE
^ ^a ^b ^c ^d ^e ^f Leleu, A.; Alibert, Y.; Hara, N. C.; Hooton, M. J.; Wilson, T. G.; Robutel, P.; Delisle, J.-B.; Laskar, J.; Hoyer, S.; Lovis, C.; Bryant, E. M.; Ducrot, E.; Cabrera, J.; Acton, J.; Adibekyan, V.; Allart, R.; Allende Prieto, C.; Alonso, R.; Alves, D.; Anderson, D. R.; Al, D. R.; Angerhausen, D.; Anglada Escudé, G.; Asquier, J.; Barrado, D.; Barros, S. C. C.; Baumjohann, W.; Bayliss, D.; Beck, M.; et al. (2021), "Six transiting planets and a chain of Laplace resonances in TOI-178", Astronomy & Astrophysics, arXiv:2101.09260, doi:10.1051/0004-6361/202039767, S2CID 231693292
^ Palatnick, Skyler; Kipping, David; Yahalomi, Daniel (2021), VALIDATION OF HD 183579b USING ARCHIVAL RADIAL VELOCITIES: A WARM-NEPTUNE ORBITING A BRIGHT SOLAR ANALOG, arXiv:2101.12137
^ Yun Hak Kim; Chung, Sun-Ju; Yee, Jennifer C.; Udalski, A.; Bond, Ian A.; Youn Kil Jung; Gould, Andrew; Albrow, Michael D.; Han, Cheongho; Hwang, Kyu-Ha; Ryu, Yoon-Hyun; Shin, In-gu; Shvartzvald, Yossi; Zang, Weicheng; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Hyoun-Woo; Kim, Seung-Lee; Lee, Chung-Uk; Lee, Dong-Joo; Lee, Yongseok; Park, Byeong-Gon; Pogge, Richard W.; Poleski, Radek; Mróz, Przemek; Skowron, Jan; Szymański, Michal K.; Pietrukowicz, Pawel; Kozłowski, Szymon; et al. (2021), KMT-2019-BLG-0371 and the Limits of Bayesian Analysis, arXiv:2101.12206
^ ^a ^b Sozzetti, A.; Damasso, M.; Bonomo, A. S.; Alibert, Y.; Sousa, S. G.; Adibekyan, V.; Zapatero Osorio, M. R.; González Hernández, J. I.; Barros, S. C. C.; Lillo-Box, J.; Stassun, K. G.; Winn, J.; Cristiani, S.; Pepe, F.; Rebolo, R.; Santos, N. C.; Allart, R.; Barclay, T.; Bouchy, F.; Cabral, A.; Ciardi, D.; Di Marcantonio, P.; D'Odorico, V.; Ehrenreich, D.; Fasnaugh, M.; Figueira, P.; Haldemann, J.; Jenkins, J. M.; Latham, D. W.; 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), arXiv:2101.12300
^ Han, Cheongho; Udalski, Andrzej; Lee, Chung-Uk; Albrow, Michael D.; Chung, Sun-Ju; Gould, Andrew; Hwang, Kyu-Ha; Youn Kil Jung; Kim, Doeon; Kim, Hyoun-Woo; Ryu, Yoon-Hyun; Shin, In-Gu; Shvartzvald, Yossi; Yee, Jennifer C.; Zang, Weicheng; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Seung-Lee; Lee, Dong-Joo; Lee, Yongseok; Park, Byeong-Gon; Pogge, Richard W.; Kim, Chun-Hwey; Kim, Woong-Tae; Mróz, Przemek; Szymański, Michał K.; Skowron, Jan; Poleski, Radosław; Soszyński, Igor; et al. (2021), KMT-2018-BLG-1025Lb: microlensing super-Earth planet orbiting a low-mass star, arXiv:2102.01890
^ Mahadevan, Suvrath; Stefánsson, Guðmundur; Robertson, Paul; Terrien, Ryan C.; Ninan, Joe P.; Holcomb, Rae J.; Halverson, Samuel; Cochran, William D.; Kanodia, Shubham; Ramsey, Lawrence W.; Wolszczan, Alexander; Endl, Michael; Bender, Chad F.; Diddams, Scott A.; Fredrick, Connor; Hearty, Fred; Monson, Andrew; Metcalf, Andrew J.; Roy, Arpita; Schwab, Christian (2021), The Habitable-zone Planet Finder Detects a Terrestrial-mass Planet Candidate Closely Orbiting Gliese 1151: The Likely Source of Coherent Low-frequency Radio Emission from an Inactive Star, arXiv:2102.02233
^ The CARMENES search for exoplanets around M dwarfs No evidence for a super-Earth in a 2-day orbit around GJ 1151, 2021, arXiv:2103.10216
^ ^a ^b Ikwut-Ukwa, Mma; Rodriguez, Joseph E.; Quinn, Samuel N.; Zhou, George; Vanderburg, Andrew; Ali, Asma; Bunten, Katya; Scott Gaudi, B.; Latham, David W.; Howell, Steve B.; Huang, Chelsea X.; Bieryla, Allyson; Collins, Karen A.; Carmichael, Theron W.; Rabus, Markus; Eastman, Jason D.; Collins, Kevin I.; Tan, Thiam-Guan; Schwarz, Richard P.; Myers, Gordon; Stockdale, Chris; Kielkopf, John F.; Radford, Don J.; Oelkers, Ryan J.; Jenkins, Jon M.; Ricker, George R.; Seager, Sara; Vanderspek, Roland K.; Winn, Joshua N.; et al. (2021), Two Massive Jupiters in Eccentric Orbits from the TESS Full Frame Images, arXiv:2102.02222
^ ^a ^b Ahrer, E.; Queloz, D.; Rajpaul, V. M.; Ségransan, D.; Bouchy, F.; Hall, R.; Handley, W.; Lovis, C.; Mayor, M.; Mortier, A.; Pepe, F.; Thompson, S.; Udry, S.; Unger, N. (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, arXiv:2102.03387, Bibcode:2021MNRAS.tmp..407A, doi:10.1093/mnras/stab373{{citation}}: CS1 maint: bibcode (link) CS1 maint: unflagged free DOI (link)
^ ^a ^b ^c Newton, Elisabeth R.; Mann, Andrew W.; Kraus, Adam L.; Livingston, John H.; Vanderburg, Andrew; Curtis, Jason L.; Pa Chia Thao; Hawkins, Keith; Wood, Mackenna L.; Rizzuto, Aaron C.; Soubkiou, Abderahmane; Tofflemire, Benjamin M.; Zhou, George; Crossfield, Ian J. M.; Pearce, Logan A.; Collins, Karen A.; Conti, Dennis M.; Tan, Thiam-Guan; Villeneuva, Steven; Spencer, Alton; Dragomir, Diana; Quinn, Samuel N.; Jensen, Eric L. N.; Collins, Kevin I.; Stockdale, Chris; Cloutier, Ryan; Hellier, Coel; Benkhaldoun, Zouhair; Ziegler, Carl; et al. (2021), "TESS Hunt for Young and Maturing Exoplanets (THYME) IV: Three small planets orbiting a 120 Myr-old star in the Pisces–Eridanus stream", The Astronomical Journal, 161 (2): 65, arXiv:2102.06049, Bibcode:2021AJ....161...65N, doi:10.3847/1538-3881/abccc6, S2CID 231879927{{citation}}: CS1 maint: unflagged free DOI (link)
^ ^a ^b ^c TESS re-observes the young multi-planet system TOI-451:refined ephemeris and activity evolution, 2021, arXiv:2103.09746
^ Tofflemire, Benjamin M.; Rizzuto, Aaron C.; Newton, Elisabeth R.; Kraus, Adam L.; Mann, Andrew W.; Vanderburg, Andrew; Nelson, Tyler; Hawkins, Keith; Wood, Mackenna L.; Zhou, George; Quinn, Samuel N.; Howell, Steve B.; Collins, Karen A.; Schwarz, Richard P.; Stassun, Keivan G.; Bouma, Luke G.; Essack, Zahra; Osborn, Hugh; Boyd, Patricia T.; Furesz, Gabor; Glidden, Ana; Twicken, Joseph D.; Wohler, Bill; McLean, Brian; Ricker, George R.; Vanderspek, Roland; Latham, David W.; Seager, S.; Winn, Joshua N.; Jenkins, Jon M. (2021), TESS Hunt for Young and Maturing Exoplanets (THYME) V: A Sub-Neptune Transiting a Young Star in a Newly Discovered 250 Myr Association, arXiv:2102.06066
^ ^a ^b OGLE-2018-BLG-0567Lb and OGLE-2018-BLG-0962Lb: Two Microlensing Planets through Planetary-Caustic Channel, 2021, arXiv:2102.07338
^ A super-Earth on a close-in orbit around the M1V star GJ 740. A HADES and CARMENES collaboration, 2021, arXiv:2102.09441
^ OGLE-2018-BLG-1428Lb: a Jupiter-mass planet beyond the snow line of a dwarf star, 2021, arXiv:1303.1184
^ Mass and density of the transiting hot and rocky super-Earth LHS 1478 b (TOI-1640 b), 2021, arXiv:2102.11640
^ ^a ^b An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685, 2021, arXiv:2103.01016
^ ^a ^b Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions, 2021, arXiv:2103.12760
^ An Earth-mass Planet in a Time of Covid-19: KMT-2020-BLG-0414Lb, 2021, arXiv:2103.01896
^ A transiting warm giant planet around the young active star TOI-201, 2021, arXiv:2103.02685
^ A nearby transiting rocky exoplanet that is suitable for atmospheric investigation, 2021, arXiv:2103.04950
^ ^a ^b ^c ^d NGTS 15b, 16b, 17b and 18b: four hot Jupiters from the Next Generation Transit Survey, 2021, arXiv:2103.10302
^ Systematic KMTNet Planetary Anomaly Search, Paper I: OGLE-2019-BLG-1053Lb, A Buried Terrestrial Planet, 2021, arXiv:2103.11880
^ TOI-1634 b: an Ultra-Short Period Keystone Planet Sitting Inside the M Dwarf Radius Valley, 2021, arXiv:2103.12790
^ KMT-2019-BLG-1715: planetary microlensing event with three lens masses and two source stars, 2021, arXiv:2104.00293
^ OGLE-2018-BLG-1185b : A Low-Mass Microlensing Planet Orbiting a Low-Mass Dwarf, 2021, arXiv:2104.02157
^ ^a ^b Hot planets around cool stars – two short-period mini-Neptunes transiting the late K-dwarf TOI-1260, 2021, arXiv:2104.05653
^ ^a ^b ^c Three microlensing planets with no caustic-crossing features, 2021, arXiv:2104.06544
^ Discovery of a directly imaged planet to the young solar analog YSES 2, 2021, arXiv:2104.08285
^ Shortest Microlensing Event with a Bound Planet:KMT-2016-BLG-2605, 2021, arXiv:2104.07906
^ TOI-1431 b/MASCARA-5 b: A Highly Irradiated Ultra-Hot Jupiter Orbiting One of the Hottest & Brightest Known Exoplanet Host Stars, 2021, arXiv:2104.12078
^ The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions, 2021, arXiv:2104.12414

[1] "HD 108236 f". exoplanet.eu. Retrieved 4 January 2021.

[2] CHEOPS observations of the HD 108236 planetary system: A fifth planet, improved ephemerides, and planetary radii

[3] Smith, A. M. S.; Acton, J. S.; Anderson, D. R.; Armstrong, D. J.; Bayliss, D.; Belardi, C.; Bouchy, F.; Brahm, R.; Briegal, J. T.; Bryant, E. M.; Burleigh, M. R.; Cabrera, J.; Chaushev, A.; Cooke, B. F.; Costes, J. C.; Csizmadia, Sz.; Eigmüller, Ph.; Erikson, A.; Gill, S.; Gillen, E.; Goad, M. R.; Günther, M. N.; Henderson, B. A.; Hogan, A.; Jordán, A.; Lendl, M.; McCormac, J.; Moyano, M.; Nielsen, L. D.; et al. (2021), NGTS-14Ab: a Neptune-sized transiting planet in the desert, arXiv:2101.01470

[4] Martin, David V.; El-Badry, Kareem; Vedad Kunovac Hodžić; Triaud, Amaury H. M. J.; Angus, Ruth; Birky, Jessica; Foreman-Mackey, Daniel; Hedges, Christina; Montet, Benjamin T.; Murphy, Simon J.; Santerne, Alexandre; Stassun, Keivan G.; Stephan, Alexander P.; Wang, Ji; Benni, Paul; Krushinsky, Vadim; Chazov, Nikita; Mishevskiy, Nikolay; Ziegler, Carl; Soubkiou, Abderahmane; Benkhaldoun, Zouhair; Caldwell, Douglas A.; Collins, Karen; Henze, Christopher E.; Guerrero, Natalia M.; Jenkins, Jon M.; Latham, David W.; Levine, Adam; McDermott, Scott; et al. (2021), TOI-1259Ab – a gas giant planet with 2.7% deep transits and a bound white dwarf companion, arXiv:2101.02707

[5] Grieves, Nolan; Nielsen, Louise D.; Vines, Jose I.; Bryant, Edward M.; Gill, Samuel; Bouchy, François; Lendl, Monika; Bayliss, Daniel; Eigmueller, Philipp; Segransan, Damien; Acton, Jack S.; Anderson, David R.; Burleigh, Matthew R.; Casewell, Sarah L.; Chaushev, Alexander; Cooke, Benjamin F.; Gillen, Edward; Goad, Michael R.; Günther, Maximilian N.; Henderson, Beth A.; Hogan, Aleisha; Jenkins, James S.; Alves, Douglas R.; Jordán, Andrés; McCormac, James; Moyano, Maximiliano; Queloz, Didier; Raynard, Liam; Seidel, Julia V.; et al. (2021), NGTS-13b: A hot 4.8 Jupiter-mass planet transiting a subgiant star, arXiv:2101.04245

[Rodriguez2021-6] Rodriguez, Joseph E.; Quinn, Samuel N.; Zhou, George; Vanderburg, Andrew; Nielsen, Louise D.; Wittenmyer, Robert A.; Brahm, Rafael; Reed, Phillip A.; Huang, Chelsea X.; Vach, Sydney; Ciardi, David R.; Oelkers, Ryan J.; Stassun, Keivan G.; Hellier, Coel; Scott Gaudi, B.; Eastman, Jason D.; Collins, Karen A.; Bieryla, Allyson; Christian, Sam; Latham, David W.; Carleo, Ilaria; Wright, Duncan J.; Matthews, Elisabeth; Gonzales, Erica J.; Ziegler, Carl; Dressing, Courtney D.; Howell, Steve B.; Tan, Thiam-Guan; Wittrock, Justin; et al. (2021), TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full Frame Images, arXiv:2101.01726

[7] Yee, Jennifer C.; Zang, Weicheng; Udalski, Andrzej; Ryu, Yoon-Hyun; Green, Jonathan; Hennerley, Steve; Marmont, Andrew; Sumi, Takahiro; Mao, Shude; Gromadzki, Mariusz; Mróz, Przemek; Skowron, Jan; Poleski, Radoslaw; Szymański, Michał K.; Soszyński, Igor; Pietrukowicz, Paweł; Kozłowski, Szymon; Ulaczyk, Krzysztof; Rybicki, Krzysztof A.; Iwanek, Patryk; Wrona, Marcin; Albrow, Michael D.; Chung, Sun-Ju; Gould, Andrew; Han, Cheongho; Hwang, Kyu-Ha; Youn Kil Jung; Kim, Hyoun-Woo; Shin, In-Gu; et al. (2021), OGLE-2019-BLG-0960Lb: The Smallest Microlensing Planet, arXiv:2101.04696

[Osborn2021-8] Osborn, H. P.; Armstrong, D. J.; Adibekyan, V.; Collins, K. A.; Delgado-Mena, E.; Howell, S. B.; Hellier, C.; King, G. W.; Lillo-Box, J.; Nielsen, L. D.; Otegi, J. F.; Santos, N. C.; Ziegler, C.; Anderson, D. R.; Briceño, C.; Burke, C.; Bayliss, D.; Barrado, D.; Bryant, E. M.; Brown, D J A.; Barros, S C C.; Bouchy, F.; Caldwell, D. A.; Conti, D. M.; Díaz, R. F.; Dragomir, D.; Deleuil, M.; Demangeon, O D S.; Dorn, C.; et al. (2021), "A hot mini-Neptune in the radius valley orbiting solar analogue HD 110113", Monthly Notices of the Royal Astronomical Society, arXiv:2101.04745, Bibcode:2021MNRAS.tmp..240O, doi:10.1093/mnras/stab182{{citation}}: CS1 maint: bibcode (link) CS1 maint: unflagged free DOI (link)

[Kirsch2017-9] Hirsch, Lea A.; Ciardi, David R.; Howard, Andrew W.; Everett, Mark E.; Furlan, Elise; Saylors, Mindy; Horch, Elliott P.; Howell, Steve B.; Teske, Johanna; Marcy, Geoffrey W. (2017), "ASSESSING THE EFFECT OF STELLAR COMPANIONS FROM HIGH-RESOLUTION IMAGING OF Kepler OBJECTS OF INTEREST", The Astronomical Journal, 153 (3): 117, arXiv:1701.06577, Bibcode:2017AJ....153..117H, doi:10.3847/1538-3881/153/3/117, S2CID 39321033{{citation}}: CS1 maint: unflagged free DOI (link)

[Ciardi2021-10] AT LAST! CONFIRMATION OF KEPLER'S SECOND PLANETARY CANDIDATE

[Leleu2021-11] ^ ^a ^b ^c ^d ^e ^f Leleu, A.; Alibert, Y.; Hara, N. C.; Hooton, M. J.; Wilson, T. G.; Robutel, P.; Delisle, J.-B.; Laskar, J.; Hoyer, S.; Lovis, C.; Bryant, E. M.; Ducrot, E.; Cabrera, J.; Acton, J.; Adibekyan, V.; Allart, R.; Allende Prieto, C.; Alonso, R.; Alves, D.; Anderson, D. R.; Al, D. R.; Angerhausen, D.; Anglada Escudé, G.; Asquier, J.; Barrado, D.; Barros, S. C. C.; Baumjohann, W.; Bayliss, D.; Beck, M.; et al. (2021), "Six transiting planets and a chain of Laplace resonances in TOI-178", Astronomy & Astrophysics, arXiv:2101.09260, doi:10.1051/0004-6361/202039767, S2CID 231693292

[12] Palatnick, Skyler; Kipping, David; Yahalomi, Daniel (2021), VALIDATION OF HD 183579b USING ARCHIVAL RADIAL VELOCITIES: A WARM-NEPTUNE ORBITING A BRIGHT SOLAR ANALOG, arXiv:2101.12137

[13] Yun Hak Kim; Chung, Sun-Ju; Yee, Jennifer C.; Udalski, A.; Bond, Ian A.; Youn Kil Jung; Gould, Andrew; Albrow, Michael D.; Han, Cheongho; Hwang, Kyu-Ha; Ryu, Yoon-Hyun; Shin, In-gu; Shvartzvald, Yossi; Zang, Weicheng; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Hyoun-Woo; Kim, Seung-Lee; Lee, Chung-Uk; Lee, Dong-Joo; Lee, Yongseok; Park, Byeong-Gon; Pogge, Richard W.; Poleski, Radek; Mróz, Przemek; Skowron, Jan; Szymański, Michal K.; Pietrukowicz, Pawel; Kozłowski, Szymon; et al. (2021), KMT-2019-BLG-0371 and the Limits of Bayesian Analysis, arXiv:2101.12206

[Sozzetti2021-14] Sozzetti, A.; Damasso, M.; Bonomo, A. S.; Alibert, Y.; Sousa, S. G.; Adibekyan, V.; Zapatero Osorio, M. R.; González Hernández, J. I.; Barros, S. C. C.; Lillo-Box, J.; Stassun, K. G.; Winn, J.; Cristiani, S.; Pepe, F.; Rebolo, R.; Santos, N. C.; Allart, R.; Barclay, T.; Bouchy, F.; Cabral, A.; Ciardi, D.; Di Marcantonio, P.; D'Odorico, V.; Ehrenreich, D.; Fasnaugh, M.; Figueira, P.; Haldemann, J.; Jenkins, J. M.; Latham, D. W.; 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), arXiv:2101.12300

[15] Han, Cheongho; Udalski, Andrzej; Lee, Chung-Uk; Albrow, Michael D.; Chung, Sun-Ju; Gould, Andrew; Hwang, Kyu-Ha; Youn Kil Jung; Kim, Doeon; Kim, Hyoun-Woo; Ryu, Yoon-Hyun; Shin, In-Gu; Shvartzvald, Yossi; Yee, Jennifer C.; Zang, Weicheng; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Seung-Lee; Lee, Dong-Joo; Lee, Yongseok; Park, Byeong-Gon; Pogge, Richard W.; Kim, Chun-Hwey; Kim, Woong-Tae; Mróz, Przemek; Szymański, Michał K.; Skowron, Jan; Poleski, Radosław; Soszyński, Igor; et al. (2021), KMT-2018-BLG-1025Lb: microlensing super-Earth planet orbiting a low-mass star, arXiv:2102.01890

[Mahadevan2021-16] Mahadevan, Suvrath; Stefánsson, Guðmundur; Robertson, Paul; Terrien, Ryan C.; Ninan, Joe P.; Holcomb, Rae J.; Halverson, Samuel; Cochran, William D.; Kanodia, Shubham; Ramsey, Lawrence W.; Wolszczan, Alexander; Endl, Michael; Bender, Chad F.; Diddams, Scott A.; Fredrick, Connor; Hearty, Fred; Monson, Andrew; Metcalf, Andrew J.; Roy, Arpita; Schwab, Christian (2021), The Habitable-zone Planet Finder Detects a Terrestrial-mass Planet Candidate Closely Orbiting Gliese 1151: The Likely Source of Coherent Low-frequency Radio Emission from an Inactive Star, arXiv:2102.02233

[17] The CARMENES search for exoplanets around M dwarfs No evidence for a super-Earth in a 2-day orbit around GJ 1151, 2021, arXiv:2103.10216

[Ikwut2021-18] Ikwut-Ukwa, Mma; Rodriguez, Joseph E.; Quinn, Samuel N.; Zhou, George; Vanderburg, Andrew; Ali, Asma; Bunten, Katya; Scott Gaudi, B.; Latham, David W.; Howell, Steve B.; Huang, Chelsea X.; Bieryla, Allyson; Collins, Karen A.; Carmichael, Theron W.; Rabus, Markus; Eastman, Jason D.; Collins, Kevin I.; Tan, Thiam-Guan; Schwarz, Richard P.; Myers, Gordon; Stockdale, Chris; Kielkopf, John F.; Radford, Don J.; Oelkers, Ryan J.; Jenkins, Jon M.; Ricker, George R.; Seager, Sara; Vanderspek, Roland K.; Winn, Joshua N.; et al. (2021), Two Massive Jupiters in Eccentric Orbits from the TESS Full Frame Images, arXiv:2102.02222

[Ahrer2021-19] Ahrer, E.; Queloz, D.; Rajpaul, V. M.; Ségransan, D.; Bouchy, F.; Hall, R.; Handley, W.; Lovis, C.; Mayor, M.; Mortier, A.; Pepe, F.; Thompson, S.; Udry, S.; Unger, N. (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, arXiv:2102.03387, Bibcode:2021MNRAS.tmp..407A, doi:10.1093/mnras/stab373{{citation}}: CS1 maint: bibcode (link) CS1 maint: unflagged free DOI (link)

[Newton2021-20] Newton, Elisabeth R.; Mann, Andrew W.; Kraus, Adam L.; Livingston, John H.; Vanderburg, Andrew; Curtis, Jason L.; Pa Chia Thao; Hawkins, Keith; Wood, Mackenna L.; Rizzuto, Aaron C.; Soubkiou, Abderahmane; Tofflemire, Benjamin M.; Zhou, George; Crossfield, Ian J. M.; Pearce, Logan A.; Collins, Karen A.; Conti, Dennis M.; Tan, Thiam-Guan; Villeneuva, Steven; Spencer, Alton; Dragomir, Diana; Quinn, Samuel N.; Jensen, Eric L. N.; Collins, Kevin I.; Stockdale, Chris; Cloutier, Ryan; Hellier, Coel; Benkhaldoun, Zouhair; Ziegler, Carl; et al. (2021), "TESS Hunt for Young and Maturing Exoplanets (THYME) IV: Three small planets orbiting a 120 Myr-old star in the Pisces–Eridanus stream", The Astronomical Journal, 161 (2): 65, arXiv:2102.06049, Bibcode:2021AJ....161...65N, doi:10.3847/1538-3881/abccc6, S2CID 231879927{{citation}}: CS1 maint: unflagged free DOI (link)

[Barragan2021-21] TESS re-observes the young multi-planet system TOI-451:refined ephemeris and activity evolution, 2021, arXiv:2103.09746

[22] Tofflemire, Benjamin M.; Rizzuto, Aaron C.; Newton, Elisabeth R.; Kraus, Adam L.; Mann, Andrew W.; Vanderburg, Andrew; Nelson, Tyler; Hawkins, Keith; Wood, Mackenna L.; Zhou, George; Quinn, Samuel N.; Howell, Steve B.; Collins, Karen A.; Schwarz, Richard P.; Stassun, Keivan G.; Bouma, Luke G.; Essack, Zahra; Osborn, Hugh; Boyd, Patricia T.; Furesz, Gabor; Glidden, Ana; Twicken, Joseph D.; Wohler, Bill; McLean, Brian; Ricker, George R.; Vanderspek, Roland; Latham, David W.; Seager, S.; Winn, Joshua N.; Jenkins, Jon M. (2021), TESS Hunt for Young and Maturing Exoplanets (THYME) V: A Sub-Neptune Transiting a Young Star in a Newly Discovered 250 Myr Association, arXiv:2102.06066

[Jung2021-23] OGLE-2018-BLG-0567Lb and OGLE-2018-BLG-0962Lb: Two Microlensing Planets through Planetary-Caustic Channel, 2021, arXiv:2102.07338

[24] A super-Earth on a close-in orbit around the M1V star GJ 740. A HADES and CARMENES collaboration, 2021, arXiv:2102.09441

[25] OGLE-2018-BLG-1428Lb: a Jupiter-mass planet beyond the snow line of a dwarf star, 2021, arXiv:1303.1184

[26] Mass and density of the transiting hot and rocky super-Earth LHS 1478 b (TOI-1640 b), 2021, arXiv:2102.11640

[Bluhm2021-27] An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685, 2021, arXiv:2103.01016

[Hirano2021-28] Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions, 2021, arXiv:2103.12760

[29] An Earth-mass Planet in a Time of Covid-19: KMT-2020-BLG-0414Lb, 2021, arXiv:2103.01896

[Hobson2021-30] A transiting warm giant planet around the young active star TOI-201, 2021, arXiv:2103.02685

[31] A nearby transiting rocky exoplanet that is suitable for atmospheric investigation, 2021, arXiv:2103.04950

[Tilbrook2021-32] NGTS 15b, 16b, 17b and 18b: four hot Jupiters from the Next Generation Transit Survey, 2021, arXiv:2103.10302

[33] Systematic KMTNet Planetary Anomaly Search, Paper I: OGLE-2019-BLG-1053Lb, A Buried Terrestrial Planet, 2021, arXiv:2103.11880

[34] TOI-1634 b: an Ultra-Short Period Keystone Planet Sitting Inside the M Dwarf Radius Valley, 2021, arXiv:2103.12790

[35] KMT-2019-BLG-1715: planetary microlensing event with three lens masses and two source stars, 2021, arXiv:2104.00293

[36] OGLE-2018-BLG-1185b : A Low-Mass Microlensing Planet Orbiting a Low-Mass Dwarf, 2021, arXiv:2104.02157

[Georgieva2021-37] Hot planets around cool stars – two short-period mini-Neptunes transiting the late K-dwarf TOI-1260, 2021, arXiv:2104.05653

[Han2021-38] Three microlensing planets with no caustic-crossing features, 2021, arXiv:2104.06544

[39] Discovery of a directly imaged planet to the young solar analog YSES 2, 2021, arXiv:2104.08285

[40] Shortest Microlensing Event with a Bound Planet:KMT-2016-BLG-2605, 2021, arXiv:2104.07906

[41] TOI-1431 b/MASCARA-5 b: A Highly Irradiated Ultra-Hot Jupiter Orbiting One of the Hottest & Brightest Known Exoplanet Host Stars, 2021, arXiv:2104.12078

[42] The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions, 2021, arXiv:2104.12414

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v t e 2021 in space
« 2020 2022 »
Space probe and telescope launches	Tiangong space station Tianhe (April 2021) Lucy (Oct 2021) DART / LICIACube (Nov 2021) James Webb Space Telescope (Dec 2021)
Impact events	Winchcombe meteorite
Selected NEOs	Asteroid close approaches 2021 AV7 2020 XR 2016 DV1 2021 DW1 99942 Apophis (231937) 2001 FO32 2021 GW4 2021 PH27 2016 AJ193 2021 SG 2021 TP21 2021 UA1 2019 XS 3361 Orpheus 1994 WR12 4660 Nereus (163899) 2003 SD220 2018 AH
Exoplanets	Alpha Centauri Ab (unconfirmed) COCONUTS-2b Gliese 486 HD 108236 f HD 110082 b Kepler-1704b KOI-5Ab L 98-59 e f? Lalande 21185 c Lambda Serpentis b LHS 1678 b c NGTS-13b NGTS-14Ab OGLE-2019-BLG-0960Lb PDS 70c circumplanetary disk TIC 172900988 b TOI-178 b c d e f g TOI-755 b c Vega b (unconfirmed) YSES 2 b
Discoveries	QSO J0313−1806 (distant quasar) ID2299 (elliptical galaxy) TIC 168789840 sextuple system V723 Mon black hole candidate 2018 AG37 (TNO) 2021 DR15 (TNO) ALESS 073.1 (spiral galaxy) PJ352–15 astrophysical jet 2MASS J0348−6022 (rapidly-rotating brown dwarf) ZTF J1901+1458 (massive white dwarf) WISE 1534–1043 (brown dwarf) Andy's object (radio source)
Comets	C/2021 A1 (Leonard) C/2021 J1 (Maury-Attard) (248370) 2005 QN173 8P/Tuttle C/2014 OG₃₉₂ (PanSTARRS) C/2014 UN₂₇₁ (Bernardinelli-Bernstein) C/2021 T4 (Lemmon) P/2021 U3 (Attard-Maury)
Space exploration	Hope Mars mission (Mars orbit insertion: Feb 2021) Mars 2020 (Mars orbit insertion: Feb 2021; Perseverance Mars landing: Feb 2021) Tianwen-1 (Mars orbit insertion: Feb 2021; Zhurong rover Mars landing: May 2021)
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