PSR B1620−26
Binary star system in the globular cluster of Messier 4 / From Wikipedia, the free encyclopedia
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PSR B1620−26 is a binary star system located at a distance of 3,800 parsecs (12,400 light-years) in the globular cluster of Messier 4 (M4, NGC 6121) in the constellation of Scorpius.[2][3][4] The system is composed of a pulsar (PSR B1620−26 A) and a white dwarf star (WD B1620−26, or PSR B1620−26 B). As of 2000, the system is also confirmed to have an exoplanet orbiting the two stars.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Scorpius (M4) |
Right ascension | 16h 23m 38.2218s[1] |
Declination | −26° 31′ 53.769″[1] |
Apparent magnitude (V) | 21.30[1] |
Characteristics | |
Spectral type | Pulsar / DB |
Variable type | none |
Astrometry | |
Distance | 12,400 ly (3,800 pc) |
Details | |
Mass | 1.35 / 0.34 M☉ |
Radius | 0.00003 / 0.01 R☉ |
Temperature | ≤ 30,000 / ≤ 25,200 K |
Age | 12.2 Gyr |
Other designations | |
PSR J1623−2631 | |
Database references | |
SIMBAD | data |
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