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 |
Timing |
|
|
| 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
