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HD 213885 c is a Neptune-like exoplanet (an ice giant with a thick atmosphere) with a mass of 19.9 Earth masses. Its scorching equilibrium temperature of 1265 K (992°C) makes it far too hot for liquid water. The planet completes one orbit around its star every 4.8 Earth days. It was discovered in 2019 using the radial velocity method. It orbits the G-type star HD 213885, located approximately 48 parsecs (157 light-years) from Earth.
2019
Discovered
19.9
Earth Masses
1265
Temperature (K)
Discovery Information
Discovery MethodRadial Velocity
Discovery Year2,019
Discovery FacilityMultiple Observatories
Orbital Properties
Orbital Period4.785 days
Semi-Major Axis0.0568 AU
Eccentricity0
Physical Properties
Mass (Jupiter)0.0628 MJ
Mass (Earth)19.95 M⊕
Eq. Temperature1,265.4 K
Planetary Extremes
Where HD 213885 c sits on the spectrum of all known exoplanets.
Mass19.9 M⊕
FeatherweightColossus
Temperature1265 K
FrozenInferno
Year Length4.8 days
LightningGlacial
Star Distance0.057 AU
ScorchedFrozen exile
Star System View
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Orbit Comparison
Earth: 365.25 days (1 AU)HD 213885 c: 4.8 Earth days (0.057 AU)
Host Star: HD 213885
Spectral TypeG
Effective Temperature5,978 K
Mass1.068 M☉
Radius1.1011 R☉
Size vs Sun1.10x larger
Luminosity1.376 L☉
Luminosity vs Sun1.376x brighter
Metallicity [Fe/H]-0.04
Distance (pc)48.0883 pc
Distance (ly)156.8 light-years
Planets in the HD 213885 System
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