stars
exoplanets
news
Exoplanet NGTS-21 b
Exoplanet NGTS-21 b orbits star NGTS-21 that lies 1907 light years away from the Sun.
It weighs about 750.261 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
1907 light years
1907 light years
Loading may take a moment.
NGTS-21 b
Exoplanet, gas giant
Star: NGTS-21
Distance from the star: 0.0236 AU
Orbit around star: 1.543389 days
+
Orbital period
Orbital period of exoplanet NGTS-21 b around its star is 1.543389 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: 750.261 M Earth
| 2.3608 M Jupiter
Exoplanet mass
Exoplanet NGTS-21 b has 750.261 Earth masses (or 2.3608 Jupiter masses).
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: 14.908 R Earth | 1.3 R Jupiter
Density: 1248 kg/m3 | 22.64 % Earth
Temperature: 1357 K | 1083.85 °C
Year of discovery: 2022 (transit)
Other designations of this exoplanet
TIC 441422655 b, 2MASS J20450201-3525401 b
TIC 441422655 b, 2MASS J20450201-3525401 b
Advertisement
Comparison
When comparing to the Solar system planets, NGTS-21 b has 2.36 times the mass of Jupiter and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 13641.11 | 920.57 | 750.26 | 6820.55 | 2.36 | 7.88 | 51.39 | 43.62 |
|
Size | 38.93 | 15.69 | 14.91 | 28.13 | 1.33 | 1.64 | 3.73 | 3.92 |
|
Density | 0.23 | 0.24 | 0.23 | 0.31 | 1 | 1.79 | 0.99 | 0.72 |
|
Distance | 0.06 | 0.03 | 0.02 | 0.02 | 0 | 0 | 0 | 0 |
|
Temperature | 3.08 | 1.84 | 4.71 | 6.52 | 8.33 | 10.2 | 17.4 | 18.85 |
Habitability
Habitable zone of the star: 0.37 - 0.53 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.