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TOI-1774.01 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 824 K (551°C). The planet completes one orbit around its star every 16.7 Earth days. It was discovered in 2021 using the transit method. It orbits the star TOI-1774, located approximately 54 parsecs (176 light-years) from Earth.
2021
Discovered
8.5
Earth Masses
2.78
Earth Radii
824
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,021
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period16.7099 days
Semi-Major Axis0.1275 AU
Eccentricity0.05
Inclination89.4 deg
Physical Properties
Mass (Jupiter)0.0267 MJ
Mass (Earth)8.5 M⊕
Radius (Jupiter)0.248 RJ
Radius (Earth)2.78 R⊕
Eq. Temperature824 K
Planetary Extremes
Where TOI-1774.01 sits on the spectrum of all known exoplanets.
Mass8.5 M⊕
FeatherweightColossus
Radius2.78 R⊕
TinyEnormous
Temperature824 K
FrozenInferno
Year Length16.7 days
LightningGlacial
Star Distance0.128 AU
ScorchedFrozen exile
Star System View
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Size Comparison
2.78x Earth's radius (0.25x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-1774.01: 16.7 Earth days (0.128 AU)
Host Star: TOI-1774
Effective Temperature5,746 K
Mass0.991 M☉
Radius1.1303 R☉
Size vs Sun1.13x larger
Metallicity [Fe/H]-0.02
Distance (pc)53.974 pc
Distance (ly)176.0 light-years
Planets in the TOI-1774 System
What If You Lived Here?
77.0 kg
Your weight (from 70 kg)
1.10g
Earth-like
Feels just like home — comfortably familiar.
16.7 Earth days
Year length
Unknown sunrise
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