stars
exoplanets
news
Exoplanet TOI-1238 b
Exoplanet TOI-1238 b orbits star TOI-1238 that lies 230 light years away from the Sun.
It weighs about 3.76 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
230 light years
230 light years
Loading may take a moment.
TOI-1238 b
Exoplanet, rocky planet, ultra-short period
Star: TOI-1238
Distance from the star: 0.0139 AU
Orbit around star: 0.764597 days
+
Orbital period
Orbital period of exoplanet TOI-1238 b around its star is 0.764597 days.
The orbital period of an exoplanet is the time it takes to complete one full orbit around its star, usually measured in days. Most of the exoplanets discovered so far have orbital periods of less than one year...
More about Orbital period in StellarGuide
Eccentricity: 0.25Basic characteristic
Mass: 3.76 M Earth
Exoplanet mass
Exoplanet TOI-1238 b has 3.76 Earth masses, or 0.26 times the mass of Uranus.
The mass of an exoplanet is one of the most important characteristics for understanding what kind of world it is — whether it’s small and rocky like Earth or large and gaseous like Jupiter. Mass provides key information about the planet’s composition, gravity, and formation history...
More about Exoplanet mass in StellarGuide
Size: 1.184 R Earth | 0.1 R Jupiter
Density: 12490 kg/m3 | 226.56 % Earth
Temperature: 1130 K | 856.85 °C
Year of discovery: 2021 (transit)
Other designations of this exoplanet
2MASS J13253177+6850106 b, TIC 153951307 b, WISE J132531.75+685010.1 b
2MASS J13253177+6850106 b, TIC 153951307 b, WISE J132531.75+685010.1 b
Advertisement
TOI-1238 system structure
Exoplanet TOI-1238 b orbits star TOI-1238, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
|
|
TOI-1238 | ||||||||
| TOI-1238 b | 0.01 AU | 3.8 M⊕ | 1.2 R⊕ | 0.8 days | |||||
| TOI-1238 c | 0.04 AU | 8.3 M⊕ | 2.1 R⊕ | 3.3 days | |||||
Comparison
When comparing to the Solar system planets, TOI-1238 b has 26 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 68.36 | 4.61 | 3.76 | 34.18 | 0.01 | 0.04 | 0.26 | 0.22 |
|
Size | 3.09 | 1.25 | 1.18 | 2.23 | 0.11 | 0.13 | 0.3 | 0.31 |
|
Density | 2.31 | 2.38 | 2.27 | 3.07 | 10.04 | 17.93 | 9.93 | 7.23 |
|
Distance | 0.04 | 0.02 | 0.01 | 0.01 | 0 | 0 | 0 | 0 |
|
Temperature | 2.57 | 1.53 | 3.92 | 5.43 | 6.93 | 8.5 | 14.49 | 15.69 |
Habitability
Habitable zone of the star: 0.16 - 0.24 AU
The planet is too hot to sustain liquid water.