PSR B1257+12 d
Description: PSR B1257+12 C, alternatively designated PSR B1257+12 d and also named Phobetor, is a super-Earth exoplanet orbiting the pulsar Lich approximately 2,315 light-years away from Earth in the constellation of Virgo. It was one of the first planets ever discovered outside the Solar System. It was discovered using the pulsar timing method, where the regular pulses of a pulsar are measured to determine if there is a planet causing variations in the data.
Physical Properties
Mass (Jupiter mass): 0.0122707107573231 MJ
Radius (Jupiter radius): 0.161 RJ
Density: 3.67 g/cm³
Equilibrium Temperature: Unknown
Orbital Parameters
Orbital Period: 98.2114 days
Semi-major Axis: 0.46 AU
Eccentricity: 0.0264
Inclination: 47.0°
Host Star Properties
Host Star: PSR B1257+12
Spectral Type: Unknown
Temperature: Unknown
Stellar Mass: 1.4 M☉
Stellar Radius: Unknown
Discovery Information
Planet Letter: d
Object ID: 3.11422
Host ID: 2.103403
Discovery Date: 1992-01
Discovery Year: 1992
Discovery Method: Pulsar Timing
Discovery Locale: Ground
Discovery Facility: Arecibo Observatory
Discovery Instrument: Arecibo Radio Reciever