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Exo planets with a known atmosphere


Planet Radius Planet type Molecules
WASP-127 b 1.37 small hot gas planet CO, H2O, K, Li, Na
KELT-20 b 1.83 large hot gas giant CO, Ca+, Cr II, Fe, Fe I, Fe II, Fe+, H, H2O, Mg, Na, Si
KELT-9 b 1.84 large hot gas giant Ba, Ca, Cr, Cr II, Fe, Fe II, Fe+, FeH, H, H2, K, Mg, NI, Na, O, Sc, Sc II, Sr, Tb, Ti, Ti+, TiO, V, VO, Y II
WASP-98 b 1.1 hot gas giant TiO, VO
ISO 2I 0.000062 cold planet C2, CN, CO, H2O, NH2, O I, OH
DH Tau b ? huge cold gas giant CO, H2O
WASP-96 b 1.2 hot gas giant Al2O3, H2O, Mg2SiO4, Na, SiO, TiO2
WASP-85 A b 1.24 hot gas giant H, Li
WASP-77 A b 1.21 hot gas giant 13CO, CO, H2O
WASP-48 b 1.67 hot gas giant He
WASP-43 b 1.036 large hot gas giant AlO, C, CH4, CO, CO2, H, H2O, K, KCl, NH3, O I, SiO, TiO2
WASP-19 b 1.41 hot gas giant C, O I, TiO
WASP-172 b 1.57 hot gas giant Fe, H
WASP-107 b 0.94 small hot gas planet H2O, He
WASP-17 b 1.991 hot gas giant C, H2O, K, Na, O I, VO
GJ 876 c ? cold planet CH4, H, OH
GJ 229 A b ? cold planet CH4
GJ 570 D 0.855 huge cold gas giant NH3
SIMP J0136+09 1.15 huge cold gas giant CH4, CO, CO2, CrH, Fe, FeH, H2O, Mg2SiO4, NH3, SiO
GJ 581 c ? terrestrial CH4, H, OH
LTT 1445A b 0.11643 hot planet H2O, NH3
GJ 486 b 0.11643 hot planet H2O
2M0355 1.22 huge cold gas giant CO
WISE J0458+6434 A ? huge cold gas giant CH4, H2O
WISE 1217+16 A b 0.96 huge cold gas giant CH4, H2, H2O
GJ 436 b 0.38 small hot gas planet CH4, CO, CO2, H, H2O, Si
2MASS J2139+02 1.14 huge cold gas giant C, CH4, CO, CO2, CrH, Fe, FeH, H2O, Mg2SiO4, NH3, O, SiO
L 98-59 b 0.0758 hot planet CH4, H2, H2O
Ross 458 (AB) c 1.07 huge cold gas giant CH4, H2, H2O, K
GJ 1132 b 0.1035 hot planet CO2, H2, N2, O2
Planet Radius Planet type Molecules
TRAPPIST-1 c 0.09421 hot planet CO2, H2O
TRAPPIST-1 d 0.0689 hot planet H2O
TRAPPIST-1 f 0.09323 warm planet H2O
TRAPPIST-1 e 0.0819 hot planet CO2, H2O
TRAPPIST-1 b 0.09689 hot planet H2O
TRAPPIST-1 h 0.0674 terrestrial H2O
TRAPPIST-1 g 0.1005 warm planet H2O
55 Cnc e 0.1737 small hot gas planet C2H2, Ca, Ca+, Fe, Fe+, H2O, HCN, K, Mg, N, NH3
VHS 1256-1257 b ? huge cold gas giant CH4, CO, CO2, H2O, K, Na
GJ 1214 b 0.24463 small hot gas planet He
51 Peg b 1.9 hot gas giant CO, H2O
GJ 758 b ? huge cold gas giant CH4
tau Boo A b 1.06 large hot gas giant CO, H2O
GJ 504 b 0.96 large cold gas giant CH4
beta Pic b 1.65 huge cold gas giant C, CO, H, H2O, N, O I
HD 189733 b 1.138 hot gas giant C, CH4, CO, CO2, Ca, Fe I, H, H2O, HCN, He, K, Na, O, O I, Sc, Ti+
HD 97658 b 0.20047 small warm gas planet C, O
HD 179949 b 1.05 hot planet CO, H2O
HD 102195 b ? hot gas giant CH4, H2O
51 Eri b 1.11 large cold gas giant CH4, H2O
GJ 3470 b 0.373807 small hot gas planet H, H2O, He
HAT-P-11 b 0.389 small hot gas planet C, H, H2O, He
K2-18 b 0.211 small cold gas planet CH4, CO2, H2O, NH3
HR 8799 c 1.3 huge cold gas giant CO, H2O
HR 8799 b 1.2 large cold gas giant CH4, CO, H2O
HD 203030 b ? huge cold gas giant H2O
TOI-1430 b 0.187 small warm gas planet He
K2-3 d 0.135 cold planet H2O
K2-3 c 0.165 planet H2O
K2-3 b 0.194 terrestrial H2O
Planet Radius Planet type Molecules
HD 209458 b 1.38 hot gas giant C, C2H2, CH4, CO, CO2, Ca, Fe, Fe+, H, H2, H2O, HCN, He, K, Mg, Mn, NH3, Na, O I, O2, Sc, TiO, V, VO
2M 0103-55 (AB) b ? huge cold gas giant H
GU Psc b 1.35 huge cold gas giant CH4
kappa And b 1.2 huge cold gas giant H2O
WASP-69 b 1.057 hot gas giant C2H2, CH4, CO, CO2, H2O, HCN, He, NH3, Na, TiO
PZ Tel b ? huge cold gas giant H
2M1207 b ? large cold gas giant CH4, CO, He
HD 80606 b 1.032 large cold gas giant K
WASP-80 b 0.952 hot gas giant C2H2, CH4, CO, CO2, H, H2O, HCN, He, K, NH3, Na
2M 2236+4751 b ? huge cold gas giant CO, H2O
HD 106906 (AB) b ? huge cold gas giant C, CO, H2O, O
TYC 8998-760-1 b 3 huge cold gas giant 13CO, CO, H2O
KELT-11 b 1.3 small hot gas planet H2O, Na
WASP-189 b 1.619 hot gas giant Cr, Fe, Fe+, Mg, Mn, Ti, Ti+, TiO, V
WASP-18 b 1.165 huge hot gas giant CO, H, H2O
WASP-166 b 0.6155 small hot gas planet Na
WASP-33 b 1.603 large hot gas giant AlO, CO, Ca+, Fe, Fe I, H, H2O, Ni, OH, Si, SiO, Ti, Ti+, V
WASP-74 b 1.248 hot gas giant Al, TiO, VO
KELT-7 b 1.293 hot gas giant H, H2O
HAT-P-26 b 0.57 small hot gas planet CH4, CO, CO2, CrH, H2O, ScH, TiH
ROXs 42B (AB) b 2.5 huge cold gas giant CO, H2O, K
HAT-P-54 b 0.944 hot gas giant H2S
HAT-P-1 b 1.319 hot gas giant H2O, K, Na
WASP-52 b 1.27 hot gas giant H, H2O, K, Na
GQ Lup b 1.8 cold planet CO, H2O
PPL 15 b ? huge cold gas giant Li
HAT-P-12 b 0.949 hot gas giant Na
1RXS 1609 b 1.7 huge cold gas giant CO, H2O, K
XO-2N b 0.973 hot gas giant K, Na
CI Tau b ? huge cold gas giant CO
Planet Radius Planet type Molecules
HAT-P-18 b 0.947 small hot gas planet H2O, He
WASP-49 A b 1.115 hot gas giant K, Na
HD 76920 b ? cold planet H
MASCARA-1 b 1.5 large hot gas giant CO, Cr, Fe, Fe I, H2O, Ti
WASP-76 b 1.83 hot gas giant Al2O3, Ba, CH4, Ca, Ca+, Fe, H2O, HCN, He, Li, Mg, Mg2SiO4, Na, Ni, OH, S2, SO2, SiO, Ti, TiO, VO
XO-1 b 1.184 cold gas giant C, O I
WASP-20 A b 1.459 hot gas giant H2O
WASP-39 b 1.27 hot gas giant CO, CO2, H2O, K, Na, O
WASP-21 b 1.21 hot gas giant Na
K2-22 b 0.223 hot gas giant Na
HATS-5 b 0.912 hot gas giant H2O
WASP-121 b 1.865 hot gas giant Ba, CO, Ca, Ca+, Cr, Fe, Fe I, Fe II, Fe+, H, H2O, K, Li, Mg, NI, Na, Ni, SH, Sc II, SiO, Sr, Ti, TiO, V, VO
WASP-5 b 1.171 hot gas giant Ag
WASP-6 b 1.224 hot gas giant H2O, K, Na
HAT-P-7 b 1.431 hot gas giant Al2O3, CaTiO3, TiO2
HAT-P-32 b 1.789 hot gas giant H, H2O, He
HAT-P-70 b 1.87 large hot gas giant Ca, Cr, Fe I, H, Mg, Na, V
Kepler-167 e 0.906 large cold gas giant CH4, H2O, NH3
HAT-P-41 b 1.685 hot gas giant Al, C, Na, O I, Ti, V
WASP-31 b 1.537 hot gas giant CrH, K
WASP-178 b 1.94 hot gas giant SiO
WASP-12 b 1.9 hot gas giant C, CH4, CO, CO2, Ca, Fe, H, H2, H2O, HCN, He, Mg, Na, Ni, O I, SiO, Ti, TiO, VO
WASP-103 b 1.528 hot gas giant H2, H2O, K, Na
Kepler-1520 b ? hot planet Na

114 hits in total. Data kindly provided by www.exoplanet.eu, last updated 11 Oct 2023.


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