Gas giant · 2MASS J01033563-5515561 A

2MASS J01033563-5515561 AB b

ExoplanetsDiscovered 2013

Scientific overview

2MASS J01033563-5515561 AB b is a gas giant orbiting 2MASS J01033563-5515561 A, about 154 light-years from Earth. It was discovered in 2013 using the direct imaging.

Host star

2MASS J01033563-5515561 A

Spectral type

M5.5/M6

Mass

0.19 M☉

Discovery and detection

Detection method

Direct Imaging

Discovery year

2013

Discovered at

Very Large Telescope (VLT)

Knowledge connections

Quick facts

Class: Gas giant
Host star: 2MASS J01033563-5515561 A
Discovery method: Direct Imaging
Discovery year: 2013
Semi-major axis: 84 AU
Radius: 12.3 R⊕
Mass: 4131.79 M⊕
Density: 12.24 g/cm³ · derived
Distance: 154 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 density12.24 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 4131.79 M⊕ · NASA
- radiusEarth = 12.3 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.