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Exoplanet HD 16417 A b
Exoplanet HD 16417 A b orbits star HD 16417 A that lies 83 light years away from the Sun.
It weighs about 16.817 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
83 light years
83 light years
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HD 16417 A b
Exoplanet
Star: HD 16417 A
Distance from the star: 0.14 AU
Orbit around star: 17.24 days
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Orbital period
Orbital period of exoplanet HD 16417 A b around its star is 17.24 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: 0.2Basic characteristic
Mass: 16.817 M Earth
Exoplanet mass
Exoplanet HD 16417 A b has 16.817 Earth masses, or 0.98 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
Year of discovery: 2009 (radial velocity)
Other designations of this exoplanet
λ2 For b, CD–35°903 b, Gaia DR2 5062172841616745856 b, GC 3153 b, GJ 105.1 b, Gliese 105.1 b, GJ 9088 b, Gliese 9088 b, HD 16417 b, HIC 12186 b, HIP 12186 b, HR 772 b, SAO 193811 b, PPM 278138 b, LTT 1280 b, NLTT 8516 b, GCRV 1481 b, 2MASS J02365859-3434404 b, Lambda2 Fornacis b, TIC 122555698 b, TYC 7014-630-1 b
λ2 For b, CD–35°903 b, Gaia DR2 5062172841616745856 b, GC 3153 b, GJ 105.1 b, Gliese 105.1 b, GJ 9088 b, Gliese 9088 b, HD 16417 b, HIC 12186 b, HIP 12186 b, HR 772 b, SAO 193811 b, PPM 278138 b, LTT 1280 b, NLTT 8516 b, GCRV 1481 b, 2MASS J02365859-3434404 b, Lambda2 Fornacis b, TIC 122555698 b, TYC 7014-630-1 b
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HD 16417 system structure
Exoplanet HD 16417 A b orbits star HD 16417 A, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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HD 16417 A | ||||||||
| HD 16417 A b | 0.14 AU | 16.8 M⊕ | 17.2 days | ||||||
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HD 16417 B | ||||||||
Comparison
When comparing to the Solar system planets, HD 16417 A b has 98 % of mass of Neptune and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 305.76 | 20.63 | 16.82 | 152.88 | 0.05 | 0.18 | 1.15 | 0.98 |
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Distance | 0.36 | 0.19 | 0.14 | 0.09 | 0.03 | 0.01 | 0.01 | 0 |
Habitability
Habitable zone of the star: 1.8 - 2.6 AU
The planet is too hot to sustain liquid water.