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TOI-561 d is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.6 times the radius of Earth. It has an equilibrium temperature of 600 K (327°C). The planet completes one orbit around its star every 25.7 Earth days. It was discovered in 2020 using the transit method. It orbits the star TOI-561, located approximately 86 parsecs (280 light-years) from Earth.
2020
Discovered
13.3
Earth Masses
2.62
Earth Radii
600
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,020
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period25.7127 days
Semi-Major Axis0.1587 AU
Eccentricity0.111
Inclination89.51 deg
Physical Properties
Mass (Jupiter)0.0419 MJ
Mass (Earth)13.33 M⊕
Radius (Jupiter)0.2333 RJ
Radius (Earth)2.615 R⊕
Density4.1 g/cm3
Eq. Temperature600 K
Insolation Flux21.2 S⊕
Planetary Extremes
Where TOI-561 d sits on the spectrum of all known exoplanets.
Mass13.3 M⊕
FeatherweightColossus
Radius2.62 R⊕
TinyEnormous
Temperature600 K
FrozenInferno
Year Length25.7 days
LightningGlacial
Density4.10 g/cm³
FluffyIron-dense
Star Distance0.159 AU
ScorchedFrozen exile
Star System View
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Size Comparison
2.62x Earth's radius (0.23x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-561 d: 25.7 Earth days (0.159 AU)
Host Star: TOI-561
Mass0.806 M☉
Radius0.843 R☉
Size vs Sun1.19x smaller
Distance (pc)85.799 pc
Distance (ly)279.8 light-years
What If You Lived Here?
136.5 kg
Your weight (from 70 kg)
1.95g
Heavy
Every step takes effort. Climbing stairs is exhausting.
25.7 Earth days
Year length
Unknown sunrise
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