Back to Catalog
TOI-125 d is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.9 times the radius of Earth. It has an equilibrium temperature of 638 K (365°C). The planet completes one orbit around its star every 20.0 Earth days. It was discovered in 2020 using the transit method. It orbits the K-type star TOI-125, located approximately 111 parsecs (362 light-years) from Earth.
2020
Discovered
13.6
Earth Masses
2.93
Earth Radii
638
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,020
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period19.98 days
Semi-Major Axis0.137 AU
Eccentricity0.168
Inclination88.795 deg
Physical Properties
Mass (Jupiter)0.0428 MJ
Mass (Earth)13.6 M⊕
Radius (Jupiter)0.2614 RJ
Radius (Earth)2.93 R⊕
Density2.98 g/cm3
Eq. Temperature638.1 K
Insolation Flux26.7 S⊕
Planetary Extremes
Where TOI-125 d sits on the spectrum of all known exoplanets.
Mass13.6 M⊕
FeatherweightColossus
Radius2.93 R⊕
TinyEnormous
Temperature638 K
FrozenInferno
Year Length20.0 days
LightningGlacial
Density2.98 g/cm³
FluffyIron-dense
Star Distance0.137 AU
ScorchedFrozen exile
Star System View
Loading 3D view...
Size Comparison
2.93x Earth's radius (0.26x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-125 d: 20.0 Earth days (0.137 AU)
Host Star: TOI-125
Spectral TypeK0 V
Effective Temperature5,320 K
Mass0.859 M☉
Radius0.848 R☉
Size vs Sun1.18x smaller
Luminosity0.519 L☉
Luminosity vs Sun1.9x dimmer
Metallicity [Fe/H]-0.02
Distance (pc)111.059 pc
Distance (ly)362.2 light-years
Planets in the TOI-125 System
What If You Lived Here?
110.9 kg
Your weight (from 70 kg)
1.58g
Heavy
Every step takes effort. Climbing stairs is exhausting.
20.0 Earth days
Year length
Orange sunrise
Test Your Knowledge
Related Research
Loading papers...