Gas giant · 2MASS J04372171+2651014

2M0437 b

ExoplanetsDiscovered 2021

Scientific overview

2M0437 b is a gas giant orbiting 2MASS J04372171+2651014, about 419 light-years from Earth. It was discovered in 2021 using the direct imaging.

Host star

2MASS J04372171+2651014

Spectral type

M V

Temperature

3,100 K

Mass

0.17 M☉

Discovery and detection

Detection method

Discovery year

2021

Subaru Telescope

Knowledge connections

Orbits2MASS J04372171+2651014
Discovered by methodDirect Imaging
Discovered atSubaru Telescope
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Gas giant
Host star: 2MASS J04372171+2651014
Discovery method: Direct Imaging
Discovery year: 2021
Semi-major axis: 118 AU
Radius: 13 R⊕
Mass: 1271.31 M⊕
Density: 3.19 g/cm³ · derived
Equilibrium temp.: 1450 K
Distance: 419 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 density3.19 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 1271.31 M⊕ · NASA
- radiusEarth = 13 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.