Gas giant · AB Aur

AB Aur b

ExoplanetsDiscovered 2022

Scientific overview

AB Aur b is a gas giant orbiting AB Aur, about 529 light-years from Earth. It was discovered in 2022 using the direct imaging.

Host star

Temperature

9,770 K

Mass

2.4 M☉

Discovery and detection

Detection method

Discovery year

2022

Subaru Telescope

Knowledge connections

OrbitsAB Aur
Discovered by methodDirect Imaging
Discovered atSubaru Telescope
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Gas giant
Host star: AB Aur
Discovery method: Direct Imaging
Discovery year: 2022
Semi-major axis: 93.9 AU
Eccentricity: 0.4
Radius: 12.5 R⊕
Mass: 2860.46 M⊕
Density: 8.07 g/cm³ · derived
Equilibrium temp.: 84 K
Insolation: 0.01 S⊕
Distance: 529 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 density8.07 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 2860.46 M⊕ · NASA
- radiusEarth = 12.5 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.