Back to Catalog
HD 63433 c is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.7 times the radius of Earth. It has an equilibrium temperature of 679 K (406°C). The planet completes one orbit around its star every 20.5 Earth days. It was discovered in 2020 using the transit method. It orbits the G-type star HD 63433, located approximately 22 parsecs (73 light-years) from Earth.
2020
Discovered
15.5
Earth Masses
2.69
Earth Radii
679
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,020
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period20.5438 days
Semi-Major Axis0.1463 AU
Inclination89.07 deg
Physical Properties
Mass (Jupiter)0.0489 MJ
Mass (Earth)15.539 M⊕
Radius (Jupiter)0.24 RJ
Radius (Earth)2.692 R⊕
Density4.63 g/cm3
Eq. Temperature678.92 K
Planetary Extremes
Where HD 63433 c sits on the spectrum of all known exoplanets.
Mass15.5 M⊕
FeatherweightColossus
Radius2.69 R⊕
TinyEnormous
Temperature679 K
FrozenInferno
Year Length20.5 days
LightningGlacial
Density4.63 g/cm³
FluffyIron-dense
Star Distance0.146 AU
ScorchedFrozen exile
Star System View
Loading 3D view...
Size Comparison
2.69x Earth's radius (0.24x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)HD 63433 c: 20.5 Earth days (0.146 AU)
Host Star: HD 63433
Spectral TypeG5 V
Effective Temperature5,688 K
Mass0.99 M☉
Radius0.912 R☉
Size vs Sun1.10x smaller
Luminosity0.75 L☉
Luminosity vs Sun1.3x dimmer
Metallicity [Fe/H]0.03
Distance (pc)22.4035 pc
Distance (ly)73.1 light-years
Planets in the HD 63433 System
What If You Lived Here?
150.1 kg
Your weight (from 70 kg)
2.14g
Crushing
Standing upright is a struggle. Your body feels like lead.
20.5 Earth days
Year length
Yellow sunrise
Test Your Knowledge
Related Research
Loading papers...