Gas giant · Ross 458

Ross 458 c

ExoplanetsDiscovered 2010

Scientific overview

Ross 458 c is a gas giant orbiting Ross 458, about 38 light-years from Earth. It was discovered in 2010 using the direct imaging.

Host star

Spectral type

M2

Temperature

3,965 K

Mass

0.556 M☉

Discovery and detection

Detection method

Discovery year

2010

Knowledge connections

OrbitsRoss 458
Discovered by methodDirect Imaging
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Gas giant
Host star: Ross 458
Discovery method: Direct Imaging
Discovery year: 2010
Semi-major axis: 1100 AU
Radius: 14.01 R⊕
Mass: 1906.98 M⊕
Density: 3.82 g/cm³ · derived
Equilibrium temp.: 4 K
Distance: 38 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 density3.82 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 1906.98 M⊕ · NASA
- radiusEarth = 14.01 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.