Tags: Planet.

HD 20781 b is a hot Neptune with 11 to 13 Earth masses. It is the innermost planet orbiting its parent star HD 20781 at about 0.169 astronomical units.

apoapsis (km)
2.84236e+10
orbital period (μ)
1736.64
periapsis (km)
2.24397e+10
Method of discovery
Radial velocity

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