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Exoplanet BD+05 4868 A b
Exoplanet BD+05 4868 A b orbits star BD+05 4868 A that lies 142 light years away from the Sun.
It weighs about 0.02 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
142 light years
142 light years
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BD+05 4868 A b
Exoplanet
Star: BD+05 4868 A
Distance from the star: 0.0208 AU
Orbit around star: 1.271869 days
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Orbital period
Orbital period of exoplanet BD+05 4868 A b around its star is 1.271869 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: 0.02 M Earth
Exoplanet mass
Exoplanet BD+05 4868 A b has 0.02 Earth masses, or 0.36 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: 0.314 R Earth
Density: 3562 kg/m3 | 64.61 % Earth
Temperature: 1820 K | 1546.85 °C
Year of discovery: 2025 (transit)
Other designations of this exoplanet
TIC 466376085 b, BD+05 4868A b, HIP 107587 b, G 93-37 b, LSPM J2147+0636 b, LTT 18540 b, 2MASS J21472654+0636178 b, TYC 556-856-1 b, UCAC2 34205672 b, WISE J214726.69+063618.9 b, Gaia DR3 2700378125204437760 b
TIC 466376085 b, BD+05 4868A b, HIP 107587 b, G 93-37 b, LSPM J2147+0636 b, LTT 18540 b, 2MASS J21472654+0636178 b, TYC 556-856-1 b, UCAC2 34205672 b, WISE J214726.69+063618.9 b, Gaia DR3 2700378125204437760 b
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BD+05 4868 system structure
Exoplanet BD+05 4868 A b orbits star BD+05 4868 A, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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BD+05 4868 A | ||||||||
| BD+05 4868 A b | 0.02 AU | 0 M⊕ | 0.3 R⊕ | 1.3 days | |||||
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BD+05 4868 B | 130 AU | |||||||
Comparison
When comparing to the Solar system planets, BD+05 4868 A b has 36 % 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 | 0.36 | 0.02 | 0.02 | 0.18 | 0 | 0 | 0 | 0 |
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Size | 0.82 | 0.33 | 0.31 | 0.59 | 0.03 | 0.03 | 0.08 | 0.08 |
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Density | 0.66 | 0.68 | 0.65 | 0.87 | 2.86 | 5.11 | 2.83 | 2.06 |
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Distance | 0.05 | 0.03 | 0.02 | 0.01 | 0 | 0 | 0 | 0 |
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Temperature | 4.14 | 2.47 | 6.32 | 8.75 | 11.17 | 13.68 | 23.33 | 25.28 |
Habitability
Habitable zone of the star: 0.49 - 0.71 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.