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Binary pulsar–neutron star system From Wikipedia, the free encyclopedia
PSR J1930–1852 is a binary pulsar system, composed of a pulsar and a neutron star and orbiting around their common center of mass. Located 4,900 light-years (1,500 pc) away from Earth in the constellation Sagittarius, it is the most distantly-separated double neutron star system known.[2][3][4]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Sagittarius |
Right ascension | 19h 30m 29.716s[1] |
Declination | –18° 51′ 46.27″[1] |
Characteristics | |
Spectral type | Pulsar + Neutron star |
Astrometry | |
Distance | 1500 pc[2] |
Details[2]: 4 | |
PSR J1930–1852 A | |
Mass | ≤1.32 M☉ |
Rotation | 185.52016047926(8) ms |
Age | 163 Myr |
PSR J0952–0607 B | |
Mass | ≥1.30 M☉ |
Orbit[2]: 3 | |
Primary | PSR J1930–1852 A |
Companion | PSR J1930–1852 B |
Period (P) | 45.0600007(5) d |
Semi-major axis (a) | 50900000 km (mean separation)[lower-alpha 1] |
Eccentricity (e) | 0.39886340(17) |
Periastron epoch (T) | JD 2456527.142330(3) 22 August 2013 15:24:57 UTC |
Other designations | |
PSR J1930–1852 | |
Database references | |
SIMBAD | data |
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