GJ 536

Planetary system · 34.0 light-years away · also HD 122303, HIP 68469

GJ 536 is 34.0 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M1 V star; the first was found in 2016 by radial velocity (La Silla Observatory).

Fly there in 3D

Worth knowing

GJ 536 b goes round its star every 8.71 days, 10 times as often as Mercury goes round the Sun.

The star

Spectral typeM1 V
Surface temperature3,641 K
Mass0.528 solar masses
Radius0.529 solar radii
Luminosity0.04437 times the Sun
Apparent magnitude9.71
Ageabout 4.2 billion years
Distance from the Sun34.0 light-years (10.4 parsecs)
Position (J2000)RA 210.2597°, Dec -2.6523°
ConstellationVirgo

Planets (2)

PlanetYearOrbitRadiusMassFound
GJ 536 b8.71 days0.0668 AU2.41 R⊕ estimated6.37 M⊕ minimumRadial Velocity, 2016
GJ 536 c32.8 days0.162 AU2.3 R⊕ estimated5.89 M⊕ minimumRadial Velocity, 2025

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 3,641 K, 0.044 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.22 to 0.42 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 34 years ago, within living memory.

Nearest systems to it

Also found by La Silla Observatory

Sources

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