GJ 480

Planetary system · 46.4 light-years away · also HIP 61706

GJ 480 is 46.4 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M3.5 Ve star; the first was found in 2020 by radial velocity (Multiple Observatories).

Fly there in 3D

Worth knowing

GJ 480 b goes round its star every 9.55 days, 9 times as often as Mercury goes round the Sun.

The star

Spectral typeM3.5 Ve
Surface temperature3,509 K
Mass0.45 solar masses
Radius0.449 solar radii
Luminosity0.02742 times the Sun
Apparent magnitude11.49
Distance from the Sun46.4 light-years (14.2 parsecs)
Position (J2000)RA 189.7134°, Dec 11.6951°
ConstellationVirgo

Planets (1)

PlanetYearOrbitRadiusMassFound
GJ 480 b9.55 days0.0680 AU2.91 R⊕ estimated8.8 M⊕ minimumRadial Velocity, 2020

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 3,509 K, 0.027 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.17 to 0.33 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 46 years ago, within living memory.

Nearest systems to it

Also found by Multiple Observatories

Sources

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