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Exoplanet TOI 4129 b
Exoplanet TOI 4129 b orbits star TOI 4129 that lies 427 light years away from the Sun.
It weighs about 25.5 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
427 light years
427 light years
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TOI 4129 b
Exoplanet
Star: TOI 4129
Distance from the star: 0.038 AU
Orbit around star: 3.273 days
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Orbital period
Orbital period of exoplanet TOI 4129 b around its star is 3.273 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: 0.091Basic characteristic
Mass: 25.5 M Earth
Exoplanet mass
Exoplanet TOI 4129 b has 25.5 Earth masses, or 1.48 times the mass of Neptune.
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: 5.67 R Earth | 0.5 R Jupiter
Density: 771 kg/m3 | 13.99 % Earth
Temperature: 926 K | 652.85 °C
Year of discovery: 2024
Other designations of this exoplanet
TIC 123357034 b, 2MASS J18460652+4614546 b, Gaia DR3 2119155349385688576 b, KIC 9568859 b
TIC 123357034 b, 2MASS J18460652+4614546 b, Gaia DR3 2119155349385688576 b, KIC 9568859 b
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TOI 4129 system structure
Exoplanet TOI 4129 b orbits star TOI 4129, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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TOI 4129 | ||||||||
| TOI 4129 b | 0.04 AU | 25.5 M⊕ | 5.7 R⊕ | 3.3 days | |||||
Comparison
When comparing to the Solar system planets, TOI 4129 b has 1.48 times the mass of Neptune and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 463.64 | 31.29 | 25.5 | 231.82 | 0.08 | 0.27 | 1.75 | 1.48 |
|
Size | 14.81 | 5.97 | 5.67 | 10.7 | 0.51 | 0.62 | 1.42 | 1.49 |
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Density | 0.14 | 0.15 | 0.14 | 0.19 | 0.62 | 1.11 | 0.61 | 0.45 |
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Distance | 0.1 | 0.05 | 0.04 | 0.02 | 0.01 | 0 | 0 | 0 |
|
Temperature | 2.1 | 1.26 | 3.22 | 4.45 | 5.68 | 6.96 | 11.87 | 12.86 |
Habitability
Habitable zone of the star: 0.29 - 0.42 AU
The planet is too hot to sustain liquid water.