Super-Earth · HD 22496

HD 22496 b

ExoplanetsDiscovered 2021

Scientific overview

HD 22496 b is a super-earth orbiting HD 22496, completing an orbit every 5 days, about 44 light-years from Earth. It was discovered in 2021 using the radial velocity method.

Host star

HD 22496

Spectral type

K5/M0V

Temperature

4,385 K

Mass

0.684 M☉

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2021

Discovered at

Very Large Telescope (VLT)

Knowledge connections

OrbitsHD 22496
Discovered by methodRadial Velocity Method
Discovered atVery Large Telescope (VLT)
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Super-Earth
Host star: HD 22496
Discovery method: Radial Velocity Method
Discovery year: 2021
Orbital period: 5.0907 d
Semi-major axis: 0.051 AU
Radius: 2.22 R⊕
Mass: 5.57 M⊕
Density: 2.81 g/cm³ · derived
Equilibrium temp.: 573 K
Insolation: 26 S⊕
Distance: 44 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 density2.81 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 5.57 M⊕ · NASA
- radiusEarth = 2.22 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.