Gas giant · HD 284149 A

HD 284149 AB b

ExoplanetsDiscovered 2017

Scientific overview

HD 284149 AB b is a gas giant orbiting HD 284149 A, about 384 light-years from Earth. It was discovered in 2017 using the direct imaging.

Host star

Temperature

6,035 K

Mass

1.13 M☉

Discovery and detection

Detection method

Discovery year

2017

Very Large Telescope (VLT)

Knowledge connections

OrbitsHD 284149 A
Discovered by methodDirect Imaging
Discovered atVery Large Telescope (VLT)
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Gas giant
Host star: HD 284149 A
Discovery method: Direct Imaging
Discovery year: 2017
Semi-major axis: 431.16 AU
Radius: 12 R⊕
Mass: 8352.53 M⊕
Density: 26.65 g/cm³ · derived
Equilibrium temp.: 2395 K
Distance: 384 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 density26.65 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 8352.53 M⊕ · NASA
- radiusEarth = 12 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.