List of exoplanets discovered in 2019 explained

This list of exoplanets discovered in 2019 is a list of confirmed exoplanets that were first observed during 2019.^[1] ^[2]

For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information.

Name !data-sort-type="number"	Mass !data-sort-type="number"	Radius !data-sort-type="number"	Period (days) !data-sort-type="number"	Semi-major axis (AU) !data-sort-type="number"	Temp. (K)^[3] !Discovery method	data-sort-type="number"	Distance (ly) !data-sort-type="number"	Host star mass !data-sort-type="number"	Host star temp. (K) !Remarks	radial vel. FFFF00"	transit FF6CDA"	imaging 0099FF"	microlensing FF7519"	timing -->
7 Canis Majoris c	0.87		996.00	2.153		radial vel.	64.6	1.34	4826	^[4]
Beta Pictoris c	9		1200	2.7		radial vel.	64.43	1.76		^[5]
DS Tucanae Ab		0.509	8.138268		850	transit	143.89	1.01	5428	^[6]
Epsilon Indi Ab	3.25		16510	11.55	64.25	radial vel.	11.87	0.75
G 9-40 b		0.1807	5.746007	0.0385	456	transit	91.1	0.290	3348	^[7]
Gliese 49 b	0.0177		13.8508	0.0905		radial vel.	32.145	0.515	3805	^[8]
Gliese 357 b	0.00579	0.1086	3.93072	0.035	525	transit	30.80	0.342	3505
Gliese 357 c	0.0107		9.1247	0.061	401.2	radial vel.	30.80	0.342	3505
Gliese 357 d	0.019		55.661	0.204	219.6	radial vel.	30.80	0.342	3505	Potentially habitable exoplanet
	0.04097		3.822	0.082		radial vel.	48.79	0.56	3879
Gliese 411 b	0.00941		12.9532		349.83	radial vel.	8.284	0.386	3563	Host star also known as Lalande 21185
Gliese 685 b	0.028		24.160	0.1344		radial vel.	46.7102	0.3816	0.55
Gliese 686 b	0.022		15.53209	0.091	379	radial vel.	26.612	0.42	3663	^[9]
Gliese 3512 b	0.463		203.59	0.3380		radial vel.	30.95	0.123	3081	^[10]
Gliese 4276 b	0.05213		13.352	0.082		radial vel.	69.6	0.41	3387	May be two planwts in 2:1 orbital resonance
	3.58	1.676	4.7869491	0.06555	1930	transit	1122	1.65	7394
	<6.78	1.87	2.74432452	0.04739	4000	transit	1073	1.89	8450
	0.210		158.991	0.533		radial vel.	100.2	0.80	4914
HD 13724 b	26.77		14763.405	12.40		radial vel.	141.9	0.76	5868
HD 15337 b	0.0236	0.146	4.75615	0.0522	1001.0	transit	146.36	0.90	5125	Host star also known as TOI-402
HD 15337 c	0.0255	0.213	17.1784	0.1268	642	transit	146.36	0.90	5125	Host star also known as TOI-402
HD 21411 b	0.207		84.288	0.362		radial vel.		0.89	5605
HD 21749 b	0.073	0.254	35.61253	0.1915	422	transit	53.261	0.73	4640
HD 21749 c	<0.0116	0.0796	7.78993	0.0695	701	transit	53.261	0.73	4640
HD 24085 b	0.0371		2.0455	0.034		radial vel.	179.4	1.22	6034
HD 25015 b	4.48		6019.320	6.19		radial vel.	122.2	0.86	5160
HD 39855 b	0.027		3.2498	0.041		radial vel.	75.93	0.87	5576
HD 64114 b	0.0560		45.791	0.246		radial vel.	102.9	0.95	5676
HD 65216c	1.295		577.6	1.301		radial vel.	114.7	0.95	5718	Rediscovered in 2019 after false positive in 2013^[11]
HD 85628 Ab	1.675	1.515	2.8240932	0.0474	1865	transit	560	1.75	7800	Host star also known as MASCARA-4
HD 92788 c	3.67		11611.2975	10.50		radial vel.	113.1385	1.15	5744	^[12]
HD 92987 b	16.88		10354.8375	9.62		radial vel.	142.2	1.08	5770
HD 97048 b	2.5			130		imaging	603	2.4	10000	Discovered using study of disk kinematics. Unconfirmed.
HD 102843 b	0.3584		3090.942	4.074		radial vel.	205.05	0.95	5436
HD 103949 b	0.0352		120.878	0.439		radial vel.	86.50	0.77	4792
HD 181234 b	8.37		7462.0575	12.40		radial vel.	155.9	1.01	5386
HD 202696 b	1.996		517.8	1.566		radial vel.	618.3	1.91	5040
HD 202696 c	1.864		946.6	2.342		radial vel.	618.3	1.91	5040
HD 206255 b	0.108		96.045	0.461		radial vel.	245.9	1.42	5635
HD 210193 b	0.4817		649.918	1.487		radial vel.	137.8	1.04	5790
HD 211970 b	0.0409		25.201	0.143		radial vel.	42.4	0.61	4127
HD 213885 b	0.0278	0.1557	1.008035	0.02012		transit	156.45721	1.068	5978	A transiting 1-day-period super-Earth with an Earth-like composition around a bright (V=7.9) star unveiled by TESS
HD 213885 c	0.06277		4.78503	0.056798	1265.4	radial vel.	156.45721	1.068	5978
HD 221416 b	0.190	0.836	14.2767	0.1228		transit	310.0931	1.212	5080	Host star also known as TOI-197 or HIP 116158
HD 221420 b	9.70		22482	18.5		radial vel.	101.7	1.67	5830
HIP 35173 b	0.0400		41.516	0.217		radial vel.	108.25	0.79	4881
HIP 54373 b	0.02712		7.760	0.063		radial vel.	61.09	0.57	4021
HIP 54373 c	0.03914		15.144	0.0990		radial vel.	61.09	0.57	4021
HIP 71135 b	0.0592		87.190	0.335		radial vel.	105.5	0.66	4146
HIP 79098 (AB)b	20.5			345	2450	imaging	477.2	3.75		Brown dwarf
HR 858 b		0.1860	3.58599	0.0480	1572	transit	104.35	1.145	6201	^[13]
HR 858 c		0.1730	5.97293	0.0674	1326	transit	104.35	1.145	6201
HR 858 d		0.1931	11.2300	0.1027	1075	transit	104.35	1.145	6201
HR 5183 b	3.23		27000	18	171	radial vel.	102.7	1.07	5794	Exoplanet found with one of the most elliptical orbits as of 2019^[14]
K2-32e		0.0901	4.34882	0.04951		transit	516.6	0.856		With a radius almost identical to that of the Earth it is almost certainly a terrestrial planet
K2-43c		0.216	2.198884		1093.7	transit	598	0.57	3841
K2-50c		0.089	3.96151			transit	845.82	0.61
		0.35	25.4556	0.189		transit	524.414	1.40	6771	Unconfirmed
		0.154	26.5841	0.1346	296	transit	245.3	0.46	3655	Host star also known as LP 358-499
K2-146c	0.02358	0.195	4.00498		1093.7	transit	259	0.33	3385
K2-166c		0.109	3.80464			transit	1568.81	1.07
		0.105	8.0468			transit	800.91	0.91
K2-198c		0.1270	3.3596055		1229.9	transit	362	0.80	5213
K2-198d		0.2175	7.4500177		943.2	transit	362	0.80	5213
K2-282c		0.132	0.70531			transit	1638.22	0.94	5499	3rd planet discovered in 2020
	0.0214	0.1873	27.359	0.1768	347	transit	248.9	0.64	3926
K2-288Bb		0.17	31.393463	0.164	226.36	transit	214.3	0.33	3341	^[15]
	0.0664	0.273	9.21165	0.0923	1230	transit	897	1.19	6302	Two planets on a retrograde orbit
	0.774	1.006	48.36685	0.0923	676	transit	897	1.19	6302	Two planets on a retrograde orbit
K2-291b	0.0204	0.1418	2.225177	0.03261		transit	295	0.93	5520
		0.219	13.1225		750	transit	1290	0.96	5532
		0.148	2.50387		1425	transit	1230	0.99	5612
K2-296b		0.167	28.1656			transit	521.78	0.41		Host star also known as EPIC 201238110
K2-297b		0.062	2.13174			transit	831.31	0.78		Host star also known as EPIC 201497682
K2-298b		0.098	4.16959			transit	1441.42	0.8
		0.152	4.50756			transit	1219.21	0.93	5724	Two more planets in star system discovered in 2020
		0.09	2.87814			transit	528.67	0.22
		0.145	5.29711			transit	1491.42	0.56	4114
		0.08	2.25372			transit	359.49	0.41		Two more planets in system discovered in 2020
		0.086	1.58252			transit	1034.57	0.71
K2-304b		0.118	2.28943			transit	1380.78	0.83
K2-305b		0.194	18.0983			transit	2030.88	1.11
K2-306b		0.143	34.885			transit	931.54	0.91
K2-307b		0.1	15.2841			transit	1053.09	0.98	6004	Two more planets in system are suspected, second planet in system confirmed in 2021
K2-308b		0.884	3.38628			transit		1.09	6100
K2-310b		0.2307	13.6030	0.0980	536	transit	1133.22	0.690	4684	^[16]
K2-310c		0.2400	65.5500	0.280	316	transit	1133.22	0.690	4684
KELT-23Ab	0.938	1.323	2.255251	0.03302	1561	transit	409.07	0.94	5899
KELT-24b	5.18	1.272	5.5514926	0.06969	1459	transit	313.2	1.46	6509
Kepler-47d	0.05984	0.628	187.366	0.6992		transit	4900	0.957
Kepler-65e	0.653		258.8	0.362		radial vel.	999.3	1.25	6211
Kepler-82f	0.0658		75.732	0.3395		timing	3026.64	0.91	5401
Kepler-88d	3.15		1409	2.45		radial vel.	1243	1.022	5513	^[17]
Kepler-411d	0.0478	0.2961	58.02035	0.279	410	transit	500.94	0.87
Kepler-411e	0.0340		31.509728	0.186	503	timing	500.94	0.87
Kepler-448c	22		2500	4.2		timing	1318	1.5
Kepler-1658b	5.88	1.04	3.8494	0.0546		transit	2629.05	2.891	6216	First exoplanet candidate detected by Kepler Space Telescope (known as KOI-4.01), confirmed in 2019.
Kepler-1659b	0.028	0.17	13.608	0.11229		transit	3812.7570	1.02
Kepler-1659c	0.0014	0.17	20.4415	0.1472		transit	3812.7570	1.02
Kepler-1660b	7.693			237.68977		timing	4013.68	1.21		This detection arose from a search for eclipse timing variations among the more than 2,000 eclipsing binaries observed by Kepler.
KMT-2016-BLG-0212Lb	18			2.2		microlensing	21000	0.48
KMT-2016-BLG-1107Lb	3.283			0.342		microlensing	21700	0.087
KMT-2016-BLG-1836L b	2.2			3.5		microlensing	23157.1	0.49		^[18]
KMT-2017-BLG-0165Lb	0.11			3.45		microlensing	14774.88	0.760
KMT-2017-BLG-1038Lb	2.0			1.8		microlensing	19569.3826	0.37
KMT-2017-BLG-1146Lb	0.710			1.6		microlensing	21200.16	0.33
KMT-2018-BLG-1990Lb	0.348			0.763		microlensing	3150	0.09
LHS 3844 b		0.1162	0.46292913	0.00622	805	transit	48.60	0.15	3036
LP 791-18 b		0.0999	0.9480050	0.009690	650	transit	86.41	0.14	2960
LP 791-18 c		0.206	4.989963	0.029392	370	transit	86.41	0.14	2960
L 98-59 b	0.00157	0.071	2.25314	0.0233		transit	34.64	0.31	3367
L 98-59 c	0.00755	0.12	3.690621	0.0324		transit	34.64	0.31	3367
L 98-59 d	0.0107	0.14	7.45086	0.052		transit	34.64	0.31	3367
L 1159-16 b	0.088		241.59	0.403		radial vel.	14.584	0.15	3158	Refuted in 2022
L 1159-16 c	0.23		772.05	0.88		radial vel.	14.578	0.15	3154	Confirmed in 2022 as L 1159-16 b
LSPM J2116+0234 b	0.04185		14.4399	0.0876		radial vel.	57.53	0.43	3475	^[19]
LTT 1445 Ab	0.0069	0.123	5.35882	0.03807	433	transit	22.4	0.26	3337
MOA-bin-29b	0.600			0.48		microlensing	23200	0.03
	0.229	1.136	3.3569866	0.0382	952	transit	309.5	0.66	4987
	1.339	1.326	0.8820590	0.01677		transit	1010	0.77	4730
NGTS-8b	0.93	1.09	2.49970	0.035	1345	transit	1420	0.89	5241
NGTS-9b	2.90	1.07	4.43527	0.058	1448	transit	1420	1.34	6330
NSVS 14256825 b	14.15		3225	3.12		timing	2734.2	0.42	40000	Disputed^[20]
NY Virginis c	5.54		8799			timing	1800			Disputed^[21]
OGLE-2013-BLG-0911L b	9.51					microlensing	10500	0.29		^[22]
OGLE-2015-BLG-1649L	2.54			2.07		microlensing	1380	0.34
OGLE-2016-BLG-1227 b	0.79			3.4		microlensing		0.1		^[23]
OGLE-2018-BLG-0532Lb	0.02062			1.103		microlensing
OGLE-2018-BLG-0596Lb	0.04383			0.97		microlensing	18400	0.23
OGLE-2018-BLG-0740Lb	4.8		5480	6.1		microlensing	10400	1.0	5912
OGLE-2018-BLG-1011Lb	1.8			6.1		microlensing	23000	0.18
OGLE-2018-BLG-1011Lc	2.8			0.80		microlensing	23000	0.18
PDS 70c	8.0			34.5		imaging	369.96	0.76	3972	^[24]
Qatar-8b	0.371	1.285	3.71495	0.0474	1457	transit	902.5	1.03	5738
Qatar-9b	1.19	1.009	1.540731	0.0234	1134	transit	689.5	0.72	4309
Qatar-10b	0.736	1.543	1.645321	0.0286	1955	transit	1760	1.16	6124
SDSS J1228+1040 b		0.0009	0.0857	0.0034	1800	timing	413.337977	0.705		^[25]
Teegarden b	0.00330		4.9100	0.0252		radial vel.	12.50	0.09	2904
Teegarden c	0.00349		11.409	0.0443	226	radial vel.	12.50	0.09	2904	Potentially habitable exoplanet^[26]
TOI-125 b	0.0299	0.2432	4.65382	0.05186	1037	transit	363.3382	0.859	5320
TOI-125 c	0.02086	0.24614	9.15059	0.814	827.8	transit	363.3382	0.859	5320
TOI-125 d	0.0428	0.2614	19.98	0.05186	638.1	transit	363.3382	0.859	5320	^[27]
TOI-150b	1.75	1.38	5.857342	0.0583	1493	transit	1095.89	1.25	6003
TOI-163b	1.22	1.489	4.231306	0.0580	1669	transit	1359	1.44	6495
TOI-172b	5.42	0.965	9.47725	0.0914		transit	1097.418	1.128	5645
TOI-175b	0.00126	0.0642	2.2531136	0.02191	627	transit	34.636	0.273	3415	^[28] To date, it is the lowest mass planet confirmed, or measured, using the radial velocity technique.^[29] Host star also known as L 98-59.^[30]
TOI-216 b	0.059	0.714	17.1607	0.1293	628	transit	583	0.77	5026	Semi-major axes are strongly variable due to planet-planet interaction on a timescale of few years^[31] ^[32]
TOI-216 c	0.56	0.902	34.525528	0.2069	497	transit	583	0.77	5026	Semi-major axes are strongly variable due to planet-planet interaction on a timescale of few years
TOI-270b	0.0050	0.1112	3.360080	0.0306	528	transit	73.23	0.40	3386
TOI-270c	0.0193	0.216	5.660172	0.0472	424	transit	73.23	0.40	3386
TOI-270d	0.0150	0.190	11.38014	0.0733	340	transit	73.23	0.40	3386	^[33] Hydrogen and steam atmosphere
TOI-564b	1.463	1.02	1.651144	0.02734	1714	transit	643.8	0.998	5640	^[34]
TOI-905b	0.667	1.171	3.739494	0.04666	1192	transit	489.9	0.968	5570
V1298 Tauri b		0.911	24.13861	0.1687	668	transit	353.9	1.10	4970
V1298 Tauri c		0.499	8.24958	0.0825	845	transit	353.9	1.10	4970
V1298 Tauri d		0.572	12.4032	0.1083	677	transit	353.9	1.10	4970
V1298 Tauri e		0.780	60	0.308	492	transit	353.9	1.10	4970
WASP-18Ac	0.174		2.1558	0.035		timing	404	1.22	6400
WASP-126c	0.202		7.63			timing	763.206	1.12	5800	False positive
WASP-169b	0.561	1.304	5.6114118	0.0681	1604	transit	2080	1.34	6110
WASP-171b	1.084	0.980	3.8186244	0.05040	1642	transit	2530	1.17	5965
WASP-175b	0.990	1.208	3.0652907	0.04403	1571	transit	2080	1.21	6229
WASP-177b	0.508	1.58	3.071722	0.03957	1142	transit	580.5583	0.876	5017
WASP-178b	1.66	1.81	3.3448285	0.0558	2470	transit	1360	2.07	9360
WASP-180Ab	0.9	1.24	3.409264	0.048		transit	830	1.3	6600
WASP-181b	0.299	1.184	4.159	0.00542	1186	transit	1444.872	1.04	5839
WASP-182b	0.148	0.850	3.3769848	0.0451	1479	transit	1080	1.08	5638
WASP-183b	0.502	1.47	4.11177	0.0463	1111	transit	1069.79292	1.00	0.784
WASP-184b	0.57	1.33	5.18170	0.0627	1480	transit	2090	1.23	6000
WASP-185b	0.980	1.25	9.38755	0.0904	1160	transit	897	1.12	5900
WASP-192b	2.30	1.23	2.8786765	0.0408	1620	transit	1610	1.09	5910

Notes and References

Web site: NASA Exoplanet Archive. exoplanetarchive.ipac.caltech.edu. California Institute of Technology. 27 March 2018.
Web site: Extrasolar Planet's Catalogue (sic). . . 20 December 2019.
Web site: The Extrasolar Planets Encyclopaedia. 1995. 20 January 2018.
Luque . R. . Trifonov . T. . Reffert . S. . Quirrenbach . A. . Lee . M. H. . Albrecht . S. . Andersen . M. Fredslund . Antoci . V. . Grundahl . F. . Schwab . C. . Wolthoff . V. . Precise radial velocities of giant stars XIII. A second Jupiter orbiting in 4:3 resonance in the 7 CMa system . Astronomy & Astrophysics. A136 . 631 . 13 October 2019 . 1910.05853 . 2019A&A...631A.136L . 10.1051/0004-6361/201936464 . 204512658 .
News: A second planet in the Beta Pictoris system . 20 August 2019 . Nanowerk . 19 August 2019.
Benatti. S.. Nardiello. D.. Malavolta. L.. Desidera. S.. Borsato. L.. Nascimbeni. V.. Damasso. M.. D'Orazi. V.. Mesa. D.. Messina. S.. Esposito. M.. Bignamini. A.. Claudi. R.. Covino. E.. Lovis. C.. Sabotta. S.. October 2019. A possibly inflated planet around the bright young star DS Tucanae A. Astronomy & Astrophysics. en. 630. A81. 10.1051/0004-6361/201935598. 0004-6361. 2019A&A...630A..81B. 1904.01591. 102486551.
https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=G%209-40%20b&type=CONFIRMED_PLANET G 9-40 b
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