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HD 23472 c is a Super-Earth exoplanet (a planet larger than Earth but smaller than Neptune), about 1.9 times the radius of Earth. It has an equilibrium temperature of 467 K (194°C). The planet completes one orbit around its star every 29.8 Earth days. It was discovered in 2019 using the transit method. It orbits the K-type star HD 23472, located approximately 39 parsecs (127 light-years) from Earth.
2019
Discovered
3.4
Earth Masses
1.87
Earth Radii
467
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,019
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period29.7975 days
Semi-Major Axis0.1646 AU
Eccentricity0.063
Inclination89.095 deg
Physical Properties
Mass (Jupiter)0.0107 MJ
Mass (Earth)3.41 M⊕
Radius (Jupiter)0.1668 RJ
Radius (Earth)1.87 R⊕
Density3.1 g/cm3
Eq. Temperature467 K
Insolation Flux7.96 S⊕
Planetary Extremes
Where HD 23472 c sits on the spectrum of all known exoplanets.
Mass3.4 M⊕
FeatherweightColossus
Radius1.87 R⊕
TinyEnormous
Temperature467 K
FrozenInferno
Year Length29.8 days
LightningGlacial
Density3.10 g/cm³
FluffyIron-dense
Star Distance0.165 AU
ScorchedFrozen exile
Star System View
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Size Comparison
1.87x Earth's radius (0.17x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)HD 23472 c: 29.8 Earth days (0.165 AU)
Host Star: HD 23472
Spectral TypeK4 V
Effective Temperature4,684 K
Mass0.67 M☉
Radius0.71 R☉
Size vs Sun1.41x smaller
Luminosity0.237 L☉
Luminosity vs Sun4.2x dimmer
Metallicity [Fe/H]-0.2
Distance (pc)39.0341 pc
Distance (ly)127.3 light-years
What If You Lived Here?
68.3 kg
Your weight (from 70 kg)
0.98g
Earth-like
Feels just like home — comfortably familiar.
29.8 Earth days
Year length
Orange sunrise
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