PSR J1930−1852
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 19h 30m 29.716s |
| Declination | −18° 51′ 46.27″ |
| Characteristics | |
| Spectral type | Pulsar + Neutron star |
| Astrometry | |
| Distance | 4,900 ly (1,500 pc) |
| Orbit | |
| Primary | PSR J1930−1852 A |
| Name | PSR J1930−1852 B |
| Period (P) | 45.0600007(5) d |
| Semi-major axis (a) | 50900000 km (mean separation) |
| Eccentricity (e) | 0.39886340(17) |
| Periastron epoch (T) | JD 2456527.142330(3) 22 August 2013 15:24:57 UTC |
| Details | |
| PSR J1930−1852 A | |
| Mass | ≤1.32 M☉ |
| Rotation | 0.18552016047926(8) s |
| Age | 163 Myr |
| PSR J1930−1852 B | |
| Mass | ≥1.30 M☉ |
| Other designations | |
| PSR J1930−1852 | |
| Database references | |
| SIMBAD | data |
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.