SpazeCold sub-Neptune, 1,957 light years away, PSR B1257+12
PSR B1257+12 c
One of the first exoplanets ever found, in 1992, orbiting the dead core of an exploded star.
- Distance
- 1,957 light years
- Year
- 66.5 days
- Size
- 1.9 × Earth
- Temperature
- Unknown
- Mass
- 4.3 × Earth
- Found
- 1992, Arecibo Observatory
Can we live on PSR B1257+12 c?
Air: H₂, He. Not breathable: you’d need a suit and your own oxygen.
Gravity: 1.18 g. Someone who weighs 70 kg on Earth would weigh 83 kg there.
Ground: Cold hydrogen and methane envelope.
Atmosphere
- H₂
- He
- CH₄
- NH₃
Not measured yet: modelled from its size and temperature