Back to Catalog
HD 63433 b is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.1 times the radius of Earth. It has an equilibrium temperature of 967 K (694°C). The planet completes one orbit around its star every 7.1 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
21.8
Earth Masses
2.14
Earth Radii
967
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,020
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period7.1079 days
Semi-Major Axis0.0721 AU
Inclination89.075 deg
Physical Properties
Mass (Jupiter)0.0684 MJ
Mass (Earth)21.755 M⊕
Radius (Jupiter)0.191 RJ
Radius (Earth)2.14 R⊕
Density12.998 g/cm3
Eq. Temperature967.11 K
Planetary Extremes
Where HD 63433 b sits on the spectrum of all known exoplanets.
Mass21.8 M⊕
FeatherweightColossus
Radius2.14 R⊕
TinyEnormous
Temperature967 K
FrozenInferno
Year Length7.1 days
LightningGlacial
Density13.00 g/cm³
FluffyIron-dense
Star Distance0.072 AU
ScorchedFrozen exile
Star System View
Loading 3D view...
Size Comparison
2.14x Earth's radius (0.19x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)HD 63433 b: 7.1 Earth days (0.072 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?
332.5 kg
Your weight (from 70 kg)
4.75g
Crushing
Standing upright is a struggle. Your body feels like lead.
7.1 Earth days
Year length
Yellow sunrise
Test Your Knowledge
Related Research
Loading papers...