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Exoplanet data from the NASA Exoplanet Archive. Images of exoplanets are illustrations computed from the data, not photographs. Maps of the solar system: Solar System Scope. Sky panorama: ESO/S. Brunier. Both under CC BY 4.0, scaled down.

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HD 40307 · ExoAtlas

HD 40307

Star 42.2 light-years from the Sun with 5 known planets

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Planets

HD 40307 bGas giant, hot
HD 40307 cGas giant, hot
HD 40307 dGas giant, hot
HD 40307 fNeptune-like planet, hot
HD 40307 gNeptune-like planet, temperate

Star

Spectral type: K2.5 V
Temperature: 4,956 K
Radius: 0.717 × Sun
Mass: 0.77 × Sun
Brightness seen from Earth: 7.17 mag
Distance: 42.2 ly (12.9 pc)

Brightness is given in magnitudes: the smaller the number, the brighter the star. The faintest stars visible to the naked eye are around 6 mag.

Position

Right ascension: 88.5172°
Declination: -60.0237°
Catalogue names: HD 40307, HIP 27887, Gaia DR3 4758877919212831104