G 264-012

Planetary system · 52.2 light-years away

G 264-012 is 52.2 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M4.0 V star; the first was found in 2021 by radial velocity (Calar Alto Observatory).

Fly there in 3D

Worth knowing

G 264-012 b goes round its star every 2.31 days, 38 times as often as Mercury goes round the Sun.

The star

Spectral typeM4.0 V
Surface temperature3,326 K
Mass0.297 solar masses
Radius0.305 solar radii
Luminosity0.01066 times the Sun
Apparent magnitude13.078
Distance from the Sun52.2 light-years (16.0 parsecs)
Position (J2000)RA 326.6720°, Dec 66.8038°
ConstellationCepheus

Planets (2)

PlanetYearOrbitRadiusMassFound
G 264-012 b2.31 days0.0228 AU1.39 R⊕ estimated2.5 M⊕ minimumRadial Velocity, 2021
G 264-012 c8.05 days0.0525 AU1.76 R⊕ estimated3.75 M⊕ minimumRadial Velocity, 2021

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 3,326 K, 0.011 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.11 to 0.21 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 52 years ago, within living memory.

Nearest systems to it

Also found by Calar Alto Observatory

Sources

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