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TOI-1749 c 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 673 K (400°C). The planet completes one orbit around its star every 4.5 Earth days. It was discovered in 2021 using the transit method. It orbits the M-type star TOI-1749, located approximately 100 parsecs (325 light-years) from Earth.
2021
Discovered
14.0
Earth Masses
2.12
Earth Radii
673
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,021
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period4.4929 days
Semi-Major Axis0.0443 AU
Eccentricity0.019
Inclination88.8 deg
Physical Properties
Mass (Jupiter)0.044 MJ
Mass (Earth)14 M⊕
Radius (Jupiter)0.1891 RJ
Radius (Earth)2.12 R⊕
Eq. Temperature673 K
Planetary Extremes
Where TOI-1749 c sits on the spectrum of all known exoplanets.
Mass14.0 M⊕
FeatherweightColossus
Radius2.12 R⊕
TinyEnormous
Temperature673 K
FrozenInferno
Year Length4.5 days
LightningGlacial
Star Distance0.044 AU
ScorchedFrozen exile
Star System View
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Size Comparison
2.12x Earth's radius (0.19x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-1749 c: 4.5 Earth days (0.044 AU)
Host Star: TOI-1749
Spectral TypeM0 V
Effective Temperature3,985 K
Mass0.58 M☉
Radius0.55 R☉
Size vs Sun1.82x smaller
Metallicity [Fe/H]-0.26
Distance (pc)99.5561 pc
Distance (ly)324.7 light-years
Planets in the TOI-1749 System
What If You Lived Here?
218.0 kg
Your weight (from 70 kg)
3.11g
Crushing
Standing upright is a struggle. Your body feels like lead.
4.5 Earth days
Year length
Red sunrise
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