stars
exoplanets
news
Exoplanet HD 22946 d
Exoplanet HD 22946 d orbits star HD 22946 that lies 205 light years away from the Sun.
It weighs about 7.90 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
205 light years
205 light years
Loading may take a moment.
HD 22946 d
Exoplanet, sub-neptune
Star: HD 22946
Distance from the star: 0.2958 AU
Orbit around star: 47.42489 days
+
Orbital period
Orbital period of exoplanet HD 22946 d around its star is 47.42489 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: 7.90 M Earth
Exoplanet mass
Exoplanet HD 22946 d has 7.90 Earth masses, or 0.54 times the mass of Uranus.
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: 2.607 R Earth | 0.2 R Jupiter
Density: 2458 kg/m3 | 44.59 % Earth
Temperature: 546 K | 272.85 °C
Year of discovery: 2022
Other designations of this exoplanet
TOI 411 d
TOI 411 d
Advertisement
HD 22946 system structure
Exoplanet HD 22946 d orbits star HD 22946, which has bigger mass than Sun. It is one of 3 known exoplanets orbiting this star.
|
|
HD 22946 | ||||||||
| HD 22946 b | 0.06 AU | 2.6 M⊕ | 1.4 R⊕ | 4 days | |||||
| HD 22946 c | 0.1 AU | 6.6 M⊕ | 2.3 R⊕ | 9.6 days | |||||
| HD 22946 d | 0.3 AU | 7.9 M⊕ | 2.6 R⊕ | 47.4 days | |||||
Comparison
When comparing to the Solar system planets, HD 22946 d has 54 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 143.64 | 9.69 | 7.9 | 71.82 | 0.02 | 0.08 | 0.54 | 0.46 |
|
Size | 6.81 | 2.74 | 2.61 | 4.92 | 0.23 | 0.29 | 0.65 | 0.69 |
|
Density | 0.46 | 0.47 | 0.45 | 0.6 | 1.98 | 3.53 | 1.95 | 1.42 |
|
Distance | 0.76 | 0.41 | 0.3 | 0.19 | 0.06 | 0.03 | 0.02 | 0.01 |
|
Temperature | 1.24 | 0.74 | 1.9 | 2.63 | 3.35 | 4.11 | 7 | 7.58 |
Habitability
Habitable zone of the star: 1.3 - 1.8 AU
The planet is too hot to sustain liquid water.
The planet is bigger than Earth and smaller than Neptune. Its average density 2458 kg/m3 points to a hot gas planet.