HD 210277

Planetary system · 69.5 light-years away · also HD 210277, HIP 109378

HD 210277 is 69.5 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G0 V star; the first was found in 1998 by radial velocity (W. M. Keck Observatory).

Fly there in 3D

Worth knowing

HD 210277 b takes 442.2 days to go round its star once.

The star

Spectral typeG0 V
Surface temperature5,538 K
Mass1.01 solar masses
Radius1.07 solar radii
Luminosity0.929 times the Sun
Apparent magnitude6.54348
Ageabout 12 billion years
Distance from the Sun69.5 light-years (21.3 parsecs)
Position (J2000)RA 332.3748°, Dec -7.5506°
ConstellationAquarius

Planets (1)

PlanetYearOrbitRadiusMassFound
HD 210277 b442.2 days1.130 AU13.6 R⊕ estimated410 M⊕ minimumRadial Velocity, 1998

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.

Sources

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