Planet PSR B1957+20 b
Name |
PSR B1957+20 b |
|
|
Planet Status |
Confirmed |
|
|
Discovered in |
1988 |
|
|
Mass |
22.0 MJ |
 |
|
Mass*sin(i) |
— |
|
|
Semi-Major Axis |
— |
|
|
Orbital Period |
0.38 day |
 |
|
Eccentricity |
— |
|
|
ω |
— |
|
|
Tperi |
— |
|
|
Radius |
— |
|
|
Inclination |
— |
|
|
Update |
2016-07-23 |
|
|
Detection Method |
Pulsar |
|
|
Mass Detection Method |
— |
|
|
Radius Detection Method |
— |
|
|
Primary transit |
— |
|
|
Secondary transit |
— |
|
|
λ |
— |
|
|
Impact Parameter b |
— |
|
|
Time Vr=0 |
— |
|
|
Velocity Semiamplitude K |
— |
|
|
Calculated temperature |
— |
|
|
Measured temperature |
— |
|
|
Hottest point longitude |
— |
|
|
Geometric albedo |
— |
|
|
Surface gravity log(g/gH) |
— |
|
|
Alternate Names |
— |
|
|
Star
Name |
PSR B1957+20 |
|
|
Distance |
1530.0 pc |
 |
|
Spectral type |
PSR |
|
|
Apparent magnitude V |
— |
|
|
Mass |
1.4 MSun |
|
|
Age |
2.2 Gyr |
 |
|
Effective temperature |
— |
|
|
Radius |
— |
|
|
Metallicity [Fe/H] |
— |
|
|
Detected Disc |
— |
|
|
Magnetic Field |
— |
|
|
RA2000 |
19:59:37.0 |
|
|
Dec2000 |
+20:48:15 |
|
|
Alternate Names |
|
|
|
Planetary system |
1 planet
|
|
Remarks
26 Oct 2015: This planetary mass companion is likely formed by erosion of a (sub)stellar companion by the pulsar wind
Related publications
Inferring the composition of super-Jupiter mass companions of pulsars with radio line spectroscopy
2017
RAY A. & LOEB A.
ApJ, 836, 135
paper arxiv ADS