Terrestrial planet · PSR B1257+12
PSR B1257+12 b
ExoplanetsDiscovered 1994
Scientific overview
PSR B1257+12 b is a terrestrial planet orbiting PSR B1257+12, completing an orbit every 25 days, about 1957 light-years from Earth. It was discovered in 1994 using the pulsar timing.
Host star
Host star
PSR B1257+12
Mass
1.4 M☉
Planetary system — PSR B1257+12 system
View the PSR B1257+12 system (3 known planets).
| Planet | Class | Radius (R⊕) | Period (d) | Distance (ly) |
|---|---|---|---|---|
| PSR B1257+12 bPulsar Timing · 1994 | Terrestrial planet | 0.34 | 25.262 | 1957 |
| PSR B1257+12 cPulsar Timing · 1992 | Super-Earth | 1.91 | 66.5419 | 1957 |
| PSR B1257+12 dPulsar Timing · 1992 | Super-Earth | 1.8 | 98.2114 | 1957 |
Discovery and detection
Detection method
Pulsar Timing
Discovery year
1994
Knowledge connections
- OrbitsPSR B1257+12
- Member of systemPSR B1257+12 system
- Discovered by methodPulsar Timing
- Catalogued inNASA Exoplanet Archive