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Exoplanet WD 1145+017 b
Exoplanet WD 1145+017 b orbits star WD 1145+017 that lies 462 light years away from the Sun.
It weighs about 0.0006678 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
462 light years
462 light years
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WD 1145+017 b
Exoplanet, ultra-short period
Star: WD 1145+017
Distance from the star: 0.005 AU
Orbit around star: 0.1875 days
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Orbital period
Orbital period of exoplanet WD 1145+017 b around its star is 0.1875 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
Basic characteristic
Mass: 0.0006678 M Earth
Exoplanet mass
Exoplanet WD 1145+017 b has 0.0006678 Earth masses, or 0.01 times the mass of Mercury.
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: 0.15 R Earth
Density: 1091 kg/m3 | 19.79 % Earth
Temperature: 4,000 K | 0 °C
Year of discovery: 2015 (transit)
Other designations of this exoplanet
LBQS 1145+0145 b, EPIC 201563164 b, HE 1145+0145 b, SDSS J114833.62+012859.4 b
LBQS 1145+0145 b, EPIC 201563164 b, HE 1145+0145 b, SDSS J114833.62+012859.4 b
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WD 1145+017 system structure
Exoplanet WD 1145+017 b orbits star WD 1145+017, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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WD 1145+017 | ||||||||
| WD 1145+017 b | 0.01 AU | 0 M⊕ | 0.2 R⊕ | 0.2 days | |||||
| WD 1145+017 belt | 0.5 AU | - | |||||||
Comparison
When comparing to the Solar system planets, WD 1145+017 b has 1 % of mass of Mercury and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 0.01 | 0 | 0 | 0.01 | 0 | 0 | 0 | 0 |
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Size | 0.39 | 0.16 | 0.15 | 0.28 | 0.01 | 0.02 | 0.04 | 0.04 |
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Density | 0.2 | 0.21 | 0.2 | 0.27 | 0.88 | 1.57 | 0.87 | 0.63 |
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Distance | 0.01 | 0.01 | 0.01 | 0 | 0 | 0 | 0 | 0 |
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Temperature | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Habitability
Habitable zone of the star: 118.8 - 171.1 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.
The planet has mass comparable to Earth.