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Exoplanet TRAPPIST-1 c
Exoplanet TRAPPIST-1 c orbits star TRAPPIST-1 that lies 41 light years away from the Sun.
It weighs about 1.38 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
41 light years
41 light years
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TRAPPIST-1 c
Exoplanet, rocky planet
Star: TRAPPIST-1
Distance from the star: 0.01580 AU
Orbit around star: 2.421823 days
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Orbital period
Orbital period of exoplanet TRAPPIST-1 c around its star is 2.421823 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: 1.38 M Earth
Exoplanet mass
Exoplanet TRAPPIST-1 c has 1.38 Earth 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: 1.056 R Earth | 0.1 R Jupiter
Density: 6461 kg/m3 | 117.20 % Earth
Temperature: 341.9 K | 68.75 °C
Year of discovery: 2016 (transit)
Other designations of this exoplanet
2MASS J23062928-0502285 c, 2MASSI J2306292-050227 c, 2MASSW J2306292-050227 c, 2MUDC 12171 c, K2-112 c, TIC 278892590 c, WISEA J230630.02-050234.1 c, EPIC 200164267 c
2MASS J23062928-0502285 c, 2MASSI J2306292-050227 c, 2MASSW J2306292-050227 c, 2MUDC 12171 c, K2-112 c, TIC 278892590 c, WISEA J230630.02-050234.1 c, EPIC 200164267 c
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TRAPPIST-1 system structure
Exoplanet TRAPPIST-1 c orbits star TRAPPIST-1, which has much lower mass than Sun. It is one of 7 known exoplanets orbiting this star.
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TRAPPIST-1 | ||||||||
| TRAPPIST-1 b | 0.01 AU | 0.9 M⊕ | 1.1 R⊕ | 1.5 days | |||||
| TRAPPIST-1 c | 0.02 AU | 1.4 M⊕ | 1.1 R⊕ | 2.4 days | |||||
| TRAPPIST-1 d | 0.02 AU | 0.4 M⊕ | 0.8 R⊕ | 4 days | |||||
| TRAPPIST-1 e | 0.03 AU (HZ) | 0.7 M⊕ | 0.9 R⊕ | 6.1 days | |||||
| TRAPPIST-1 f | 0.04 AU (HZ) | 0.7 M⊕ | 1 R⊕ | 9.2 days | |||||
| TRAPPIST-1 g | 0.05 AU | 1.3 M⊕ | 1.1 R⊕ | 12.4 days | |||||
| TRAPPIST-1 h | 0.06 AU | 0.3 M⊕ | 0.8 R⊕ | 20 days | |||||
Comparison
When comparing to the Solar system planets, TRAPPIST-1 c has 1.38 times the mass of Earth and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 25.09 | 1.69 | 1.38 | 12.55 | 0 | 0.01 | 0.09 | 0.08 |
|
Size | 2.76 | 1.11 | 1.06 | 1.99 | 0.09 | 0.12 | 0.26 | 0.28 |
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Density | 1.2 | 1.23 | 1.17 | 1.59 | 5.19 | 9.28 | 5.14 | 3.74 |
|
Distance | 0.04 | 0.02 | 0.02 | 0.01 | 0 | 0 | 0 | 0 |
|
Temperature | 0.78 | 0.46 | 1.19 | 1.64 | 2.1 | 2.57 | 4.38 | 4.75 |
Habitability
Habitable zone of the star: 0.03 - 0.04 AU
The planet's orbit is close to hotter edge of the habitable zone of its star.
The planet has mass comparable to Earth.
News from this star system
15. 03 2023
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