rho CrB

Planetary system · 57.0 light-years away · also HD 143761, HIP 78459

rho CrB is 57.0 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this G0 star; the first was found in 1997 by radial velocity (Fred Lawrence Whipple Observatory).

Fly there in 3D

Worth knowing

rho CrB e goes round its star every 12.9 days, 7 times as often as Mercury goes round the Sun.

The star

Spectral typeG0
Surface temperature5,817 K
Mass1 solar masses
Radius1.3617 solar radii
Luminosity1.706 times the Sun
Apparent magnitude5.40816
Ageabout 10.2 billion years
Distance from the Sun57.0 light-years (17.5 parsecs)
Position (J2000)RA 240.2601°, Dec 33.3002°
ConstellationCorona Borealis

Planets (3)

PlanetYearOrbitRadiusMassFound
rho CrB e12.9 days0.106 AU1.75 R⊕ estimated3.71 M⊕ minimumRadial Velocity, 2023
rho CrB b disputed39.8 days0.225 AU13.7 R⊕ estimated348 M⊕ minimumRadial Velocity, 1997
rho CrB c102.0 days0.421 AU5.68 R⊕ estimated27.442 M⊕ minimumRadial Velocity, 2016

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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