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Exoplanet HD 128311 b
Exoplanet HD 128311 b orbits star HD 128311 that lies 53 light years away from the Sun.
It weighs about 693.037 Earth masses and orbits its star further than Earth orbits Sun.
Sun distance
53 light years
53 light years
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HD 128311 b
Exoplanet, gas giant
Star: HD 128311
Distance from the star: 1.099 AU
Orbit around star: 458.6 days
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Orbital period
Orbital period of exoplanet HD 128311 b around its star is 458.6 days (or 1.3 years).
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
Basic characteristic
Mass: 693.037 M Earth
| 2.1807 M Jupiter
Exoplanet mass
Exoplanet HD 128311 b has 693.037 Earth masses (or 2.1807 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
Year of discovery: 2002 (radial velocity)
Other designations of this exoplanet
HN Boo b, BD+10° 2710 b, GC 19679 b, GJ 3860 b, Gliese 3860 b, HD 128311 b, HIC 71395 b, HIP 71395 b, SAO 120554 b, LTT 14312 b, GSC 00910-00165 b, HZE 1A b, G 66-11 b, G 135-72 b, 2MASS J14360055+0944474 b, LTT 14312 b, NLTT 37851 b, TIC 349606708 b, TYC 910-165-1 b, WISEA J143600.72+094444.5 b
HN Boo b, BD+10° 2710 b, GC 19679 b, GJ 3860 b, Gliese 3860 b, HD 128311 b, HIC 71395 b, HIP 71395 b, SAO 120554 b, LTT 14312 b, GSC 00910-00165 b, HZE 1A b, G 66-11 b, G 135-72 b, 2MASS J14360055+0944474 b, LTT 14312 b, NLTT 37851 b, TIC 349606708 b, TYC 910-165-1 b, WISEA J143600.72+094444.5 b
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HD 128311 system structure
Exoplanet HD 128311 b orbits star HD 128311, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
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HD 128311 | ||||||||
| HD 128311 b | 1.1 AU | 693 M⊕ | 458.6 days | ||||||
| HD 128311 c | 1.76 AU | 1023.7 M⊕ | 928 days | ||||||
Comparison
When comparing to the Solar system planets, HD 128311 b has 2.18 times the mass of Jupiter and it orbits its star between distances of Earth and Mars from the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 12600.67 | 850.35 | 693.04 | 6300.34 | 2.18 | 7.28 | 47.47 | 40.29 |
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Distance | 2.82 | 1.52 | 1.1 | 0.72 | 0.21 | 0.12 | 0.06 | 0.04 |
Habitability
Habitable zone of the star: 0.64 - 0.92 AU
The planet is orbiting on the edge of the habitable zone of its star.
The planet is a gas giant and has no surface, however life could still be possible in its atmosphere or on the potential moons orbiting the planet.