Gas giant · HD 153950

HD 153950 b

ExoplanetsDiscovered 2008

Scientific overview

HD 153950 b is a gas giant orbiting HD 153950, completing an orbit every 499 days, about 158 light-years from Earth. It was discovered in 2008 using the radial velocity method.

Host star

Rapeto

Spectral type

F8 V

Temperature

6,124 K

Mass

1.25 M☉

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2008

Discovered at

La Silla Observatory

Knowledge connections

OrbitsRapeto
Discovered by methodRadial Velocity Method
Discovered atLa Silla Observatory
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Gas giant
Host star: Rapeto
Discovery method: Radial Velocity Method
Discovery year: 2008
Orbital period: 499.4 d
Semi-major axis: 1.28 AU
Eccentricity: 0.34
Radius: 13.2 R⊕
Mass: 937.6 M⊕
Density: 2.25 g/cm³ · derived
Equilibrium temp.: 295 K
Insolation: 1.36 S⊕
Distance: 158 ly

Density is derived from the archive mass and radius via ρ = M / (4⁄3·π·r³); all other values are catalogued measurements.

Derived values

Computed from source-backed inputs via standard formulae — not observations. Every input and constant is traced below.

Bulk density2.25 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 937.6 M⊕ · NASA
- radiusEarth = 13.2 R⊕ · NASA
Assumptions: M⊕ = 5.972e+24 kg, R⊕ = 6371000 m (IAU 2015 B3 nominal); Assumes a uniform sphere.
Limitations: Withheld above 30 g/cm³ (inconsistent mass/radius inputs).; Archive mass/radius carry no propagated uncertainty here.
Uncertainty: not propagated (inputs carry no catalogued uncertainty)
Computed as of 2026-06-29.

Quality & authority

Partial

Unreviewed

Description: Complete
Source coverage: Partial
Relationship coverage: Complete
Review coverage: None
Citation coverage: None
Image coverage: Not applicable

Data from the NASA Exoplanet Archive. See source quality.