Proxima Cen b vs TRAPPIST-1 e
Proxima Cen b is about 1.1 times as wide as TRAPPIST-1 e and TRAPPIST-1 e runs the hotter. TRAPPIST-1 e is the closer of the two to Earth, with an Earth-similarity index of 0.95.
| Proxima Cen b | TRAPPIST-1 e | |
|---|---|---|
| Type | Rocky world | Rocky world |
| Size (radius) | 1.02 R⊕ | 0.92 R⊕ |
| Surface gravity | ≥ 1.01× Earth | 0.82× Earth |
| Equilibrium temperature | -55°C (-67°F) | -23°C (-10°F) |
| Year (orbital period) | 11 days | 6.1 days |
| Distance from Earth | 4.2 ly | 40.5 ly |
| Earth-similarity index | 0.89 | 0.95 |
Common questions
Is Proxima Cen b bigger than TRAPPIST-1 e?
Proxima Cen b is the larger of the two: Proxima Cen b is 1.02 R⊕ across and TRAPPIST-1 e is 0.92 R⊕, where Earth is 1 R⊕.
Which has stronger gravity, Proxima Cen b or TRAPPIST-1 e?
Proxima Cen b pulls harder: surface gravity is ≥ 1.01× Earth on Proxima Cen b and 0.82× Earth on TRAPPIST-1 e.