K2-370

Planetary system · 470.3 light-years away · also TYC 1273-922-1

K2-370 is 470 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G5 V star; the first was found in 2022 by transit (K2).

Fly there in 3D

Worth knowing

K2-370 b goes round its star every 2.14 days, 41 times as often as Mercury goes round the Sun.

The star

Spectral typeG5 V
Surface temperature5,662 K
Mass0.962 solar masses
Radius0.945 solar radii
Luminosity0.7464 times the Sun
Apparent magnitude11.109
Ageabout 1.4 billion years
Distance from the Sun470.3 light-years (144.2 parsecs)
Position (J2000)RA 67.8205°, Dec 19.8317°
ConstellationTaurus

Planets (1)

PlanetYearOrbitRadiusMassFound
K2-370 b2.14 days0.0321 AU2.67 R⊕11.1 M⊕Transit, 2022

Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.

The planets, compared

For a star of 5,662 K, 0.75 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.83 to 1.46 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 470 years ago, around 1560.

Nearest systems to it

Also found by K2

Sources

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