PSR B1257+12 b
Description: PSR B1257+12 b, alternatively designated PSR B1257+12 A, also named Draugr, is an extrasolar planet approximately 2,300 light-years (710 pc) away in the constellation of Virgo. The planet is the innermost object orbiting the pulsar Lich, making it a pulsar planet in the dead stellar system. It is about twice as massive as the Moon, and is listed as the least massive planet known, including among the planets in the Solar System.
Physical Properties
Mass (Jupiter mass): 6.29267218324261e-05 MJ
Radius (Jupiter radius): 0.03 RJ
Density: 2.85 g/cm³
Equilibrium Temperature: Unknown
Orbital Parameters
Orbital Period: 25.262 days
Semi-major Axis: 0.19 AU
Eccentricity: Unknown
Inclination: 50.0°
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: b
Object ID: 3.1142
Host ID: 2.103403
Discovery Date: 1994-04
Discovery Year: 1994
Discovery Method: Pulsar Timing
Discovery Locale: Ground
Discovery Facility: Arecibo Observatory
Discovery Instrument: Arecibo Radio Reciever