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TOI-125 c is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.8 times the radius of Earth. It has an equilibrium temperature of 828 K (555°C). The planet completes one orbit around its star every 9.2 Earth days. It was discovered in 2019 using the transit method. It orbits the K-type star TOI-125, located approximately 111 parsecs (362 light-years) from Earth.
2019
Discovered
6.6
Earth Masses
2.76
Earth Radii
828
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,019
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period9.1506 days
Semi-Major Axis0.0814 AU
Eccentricity0.066
Inclination88.54 deg
Physical Properties
Mass (Jupiter)0.0209 MJ
Mass (Earth)6.63 M⊕
Radius (Jupiter)0.2461 RJ
Radius (Earth)2.759 R⊕
Density1.73 g/cm3
Eq. Temperature827.8 K
Insolation Flux77.59 S⊕
Planetary Extremes
Where TOI-125 c sits on the spectrum of all known exoplanets.
Mass6.6 M⊕
FeatherweightColossus
Radius2.76 R⊕
TinyEnormous
Temperature828 K
FrozenInferno
Year Length9.2 days
LightningGlacial
Density1.73 g/cm³
FluffyIron-dense
Star Distance0.081 AU
ScorchedFrozen exile
Star System View
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Size Comparison
2.76x Earth's radius (0.25x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-125 c: 9.2 Earth days (0.081 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?
61.0 kg
Your weight (from 70 kg)
0.87g
Earth-like
Feels just like home — comfortably familiar.
9.2 Earth days
Year length
Orange sunrise
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Related Research
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