stars
exoplanets
news
Exoplanet HD 307842 c
(Unconfirmed Exoplanet)
HD 307842 c is an unconfirmed exoplanet detected around star HD 307842. More observations are needed to confirm its existence.
Sun distance
211 light years
211 light years
Loading may take a moment.
HD 307842 c
Exoplanet
Star: HD 307842
Distance from the star: 0.22 AU
Orbit around star: 42 days
+
Orbital period
Orbital period of exoplanet HD 307842 c around its star is 42 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: 21.856 M Earth
Exoplanet mass
Exoplanet HD 307842 c has 21.856 Earth masses, or 1.27 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: 2023 (radial velocity)
Other designations of this exoplanet
TOI 784 c, TIC 460984940 c
TOI 784 c, TIC 460984940 c
Advertisement
HD 307842 system structure
Exoplanet HD 307842 c orbits star HD 307842, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
|
|
HD 307842 | ||||||||
| HD 307842 b | 0.04 AU | 9.7 M⊕ | 1.9 R⊕ | 2.8 days | |||||
| HD 307842 c unconfirmed |
0.22 AU | 21.9 M⊕ | 42 days | ||||||
Comparison
When comparing to the Solar system planets, HD 307842 c has 1.27 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 | 397.38 | 26.82 | 21.86 | 198.69 | 0.07 | 0.23 | 1.5 | 1.27 |
|
Distance | 0.56 | 0.3 | 0.22 | 0.14 | 0.04 | 0.02 | 0.01 | 0.01 |
Habitability
Habitable zone of the star: 0.85 - 1.2 AU
The planet is too hot to sustain liquid water.