Exoplanet
TOI-257 b
Orbiting TOI-257
Overview
TOI-257 b is an exoplanet orbiting the star TOI-257, discovered in 2021 using the Transit method. It is a Neptune-sized world.
Key Measurements
Radius
7.16
Earth radii
015 R⊕
Mass
43.86
Earth masses
0500 M⊕
Orbital Period
18.4
days
0.1d10,000d
Distance
76.9
parsecs
Nearby10,000 pc
Equilibrium Temp
1027
K
150 K3,500 K
Radius (Earth radii)
7.16
Mass (Earth masses)
43.86
Measured
Equilibrium Temperature
1027 K
Orbital Period
18.39 days
Distance from Earth
76.9 pc (~251 ly)
Spectral Type
Unknown
Temperature
6095 K
Mass (Solar)
1.41 M☉
Radius (Solar)
1.87 R☉
Luminosity
0.64 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
47.5173°, -50.8323°
Discovery Method
Transit
Discovery Year
2021
Data Sources
Source ID: TOI-257 b