Exoplanet 82 G. Eridani b

Exoplanet 82 G. Eridani b orbits star 82 G. Eridani that lies 20 light years away from the Sun. It weighs about 2.15 Earth masses and orbits its star closer than Earth orbits Sun.

Sun distance
20 light years

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82 G. Eridani b

Exoplanet, super-earth

Star: 82 G. Eridani

Distance from the star: 0.1257 AU

Orbit around star: 18.314 days +

Eccentricity: 0.064

Basic characteristic

Mass: 2.15 M Earth

Year of discovery: 2011 (radial velocity)

Other designations of this exoplanet
e Eri b, e Eridani b, 82 Eridani b, Gliese 139 b, GJ 139 b, HD 20794 b, LHS 19 b, LTT 1583 b, HR 1008 b, SAO 216263 b, FK5 119 b, HIP 15510 b, HIC 15510 b

82 G. Eridani system structure

Exoplanet 82 G. Eridani b orbits star 82 G. Eridani, which has lower mass than Sun. It is one of 6 known exoplanets orbiting this star.


82 G. Eridani
	82 G. Eridani g unconfirmed	0.1 AU	1 M⊕		11.9 days
	82 G. Eridani b	0.13 AU	2.2 M⊕		18.3 days
	82 G. Eridani c	0.36 AU	3 M⊕		89.7 days
	82 G. Eridani e unconfirmed	0.51 AU	4.8 M⊕		147 days
	82 G. Eridani f unconfirmed	0.88 AU (HZ)	10.3 M⊕		331.4 days
	82 G. Eridani d	1.35 AU	5.8 M⊕	1.9 R⊕	647.6 days
	82 G. Eridani dust belt	25 AU			-

Comparison

When comparing to the Solar system planets, 82 G. Eridani b has 15 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.

		Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune
	Mass	39.09	2.64	2.15	19.55	0.01	0.02	0.15	0.13
	Distance	0.32	0.17	0.13	0.08	0.02	0.01	0.01	0

Habitability

Habitable zone of the star: 0.85 - 1.2 AU

The planet is too hot to sustain liquid water.

The planet has mass comparable to Earth.