PSR B1257+12 b
Orbiting PSR B1257+12
PSR B1257+12 b is an exoplanet orbiting the star PSR B1257+12, discovered in 1994 using the Pulsar Timing method.
Mass
0.02
Earth masses
Orbital Period
25.3
days
Distance
600.0
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
0.02
Measured
Equilibrium Temperature
Unknown
Parameter source: Konacki and Wolszczan 2003
Orbital Period
25.262+0.003−0.003days
Semi-Major Axis
0.1900au
Planet Mass (Earth masses)
0.02+0.00−0.00
Planet Mass (Jupiter masses)
0.0001+0.0000−0.0000
Eccentricity
0.0000
Epoch of Periastron
2449765.60+0.20−0.20days(JD)
Argument of Periastron
0.0deg
Distance from Earth
600.0 pc (~1957 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
1.40 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
195.0149°, 12.6824°
Discovery Method
Pulsar Timing
Discovery Year
1994
Source ID: PSR B1257+12 b
PSR B1257+12 b orbits PSR B1257+12 and was reported in 1994 and was detected with the Pulsar Timing method.
Published measurements list a mass of 0.02 Earth masses and an orbital period of 25.26 days.
Catalog data places the system at about 600 parsecs from Earth and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open PSR B1257+12More planets in this system