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Exoplanet HD 1397 b
Exoplanet HD 1397 b orbits star HD 1397 that lies 261 light years away from the Sun.
It weighs about 131.931 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
261 light years
261 light years
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HD 1397 b
Exoplanet, gas giant
Star: HD 1397
Distance from the star: 0.1097 AU
Orbit around star: 11.53533 days
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Orbital period
Orbital period of exoplanet HD 1397 b around its star is 11.53533 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: 0.251Basic characteristic
Mass: 131.931 M Earth
| 0.4151 M Jupiter
Exoplanet mass
Exoplanet HD 1397 b has 131.931 Earth masses (or 0.4151 Jupiter masses).
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: 11.5 R Earth | 1 R Jupiter
Density: 478 kg/m3 | 8.67 % Earth
Temperature: 1228 K | 954.85 °C
Year of discovery: 2018 (transit)
Other designations of this exoplanet
TIC 394137592 b, HIP 1419 b, 2MASS J00174714-6621323 b, TYC 8846-638-1 b, TOI-120 b, CD-67 13 b
TIC 394137592 b, HIP 1419 b, 2MASS J00174714-6621323 b, TYC 8846-638-1 b, TOI-120 b, CD-67 13 b
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Comparison
When comparing to the Solar system planets, HD 1397 b has 1.39 times the mass of Saturn and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 2398.75 | 161.88 | 131.93 | 1199.37 | 0.42 | 1.39 | 9.04 | 7.67 |
|
Size | 30.03 | 12.11 | 11.5 | 21.7 | 1.03 | 1.26 | 2.88 | 3.03 |
|
Density | 0.09 | 0.09 | 0.09 | 0.12 | 0.38 | 0.69 | 0.38 | 0.28 |
|
Distance | 0.28 | 0.15 | 0.11 | 0.07 | 0.02 | 0.01 | 0.01 | 0 |
|
Temperature | 2.79 | 1.67 | 4.26 | 5.9 | 7.53 | 9.23 | 15.74 | 17.06 |
Habitability
Habitable zone of the star: 1.9 - 2.7 AU
The planet is too hot to sustain liquid water.