Exoplanet Gliese 251 b

Exoplanet Gliese 251 b orbits star Gliese 251 that lies 18 light years away from the Sun. It weighs about 4 Earth masses and orbits its star much closer than Earth orbits Sun.

Gliese 251 b

Exoplanet, super-earth

Star: Gliese 251

Distance from the star: 0.0818 AU

Orbit around star: 14.238 days

Eccentricity: 0.10

Basic characteristic

Mass: 4 M Earth

Temperature: 351 K | 78 °C

Year of discovery: 2020 (radial velocity)

Other designations of this exoplanet
LHS 1879 b, Ross 578 b, Wolf 294 b, HD 265866 b, HIP 33226 b, LHS 1879 b, LTT 11941 b, GJ 251 b

Comparison

When comparing to the Solar system planets, Gliese 251 b has 27 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.

	Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune
Mass	72.73	4.91	4	36.36	0.01	0.04	0.27	0.23
Distance	0.21	0.11	0.08	0.05	0.02	0.01	0	0
Temperature	0.8	0.48	1.22	1.69	2.15	2.64	4.5	4.88

Gliese 251 system structure

Exoplanet Gliese 251 b orbits star Gliese 251, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.

Gliese 251
	Gliese 251 b	0.08 AU	4 M⊕	14.2 days
	Gliese 251 c unconfirmed	0.97 AU	22.2 M⊕	-

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