Ross 128 b

Exoplanet, super-earth

Star: Ross 128

Distance from the star: 0.05 AU

Orbit around star: 9.8596 days

Basic characteristic

Mass: 1.4 M Earth

Size: 1.2 R Earth | 0.1 R Jupiter

Density: 4464 kg/m3 | 81 % Earth

Temperature: 260 K | -13 °C

Year of discovery: 2017 (radial velocity)

Other designations of this exoplanet
FI Virginis b, FI Vir b, G 010-050 b, GCTP 2730 b, GJ 447 b, Gliese 447 b, HIC 57548 b, HIP 57548 b, LHS 315 b, Vyssotsky 286 b, LTT 13240 b, LFT 852 b, LSPM PM I11477+0048 b

Comparison

When comparing to the Solar system planets, Ross 128 b has 1.4 times the mass of Earth and it orbits its star closer than Mercury orbits the Sun.

	Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune
Mass	25.44	1.72	1.4	12.72	0	0.01	0.1	0.08
Size	3.13	1.26	1.2	2.26	0.11	0.13	0.3	0.32
Density	0.83	0.85	0.81	1.1	3.59	6.41	3.55	2.58
Distance	0.13	0.07	0.05	0.03	0.01	0.01	0	0
Temperature	0.59	0.35	0.9	1.25	1.6	1.95	3.33	3.61

Ross 128 system structure

Exoplanet Ross 128 b orbits star Ross 128, which has much lower mass than Sun. It is the only known exoplanet orbiting this star

	Ross 128
		Ross 128 b	0.05 AU	1.4 M⊕	1.2 R⊕	9.9 days

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