PSR J1719−1438
| Observation data Epoch MJD 55411.0 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 17h 19m 10.0730(1)s |
| Declination | −14° 38′ 00.96(2)″ |
| Characteristics | |
| Spectral type | millisecond pulsar |
| Apparent magnitude (R) | >25.4 |
| Apparent magnitude (g) | >24.1 |
| Apparent magnitude (I) | >22.5 |
| Astrometry | |
| Distance | ~1,200 pc |
| Orbit | |
| Primary | PSR J1719-1438 |
| Companion | PSR J1719-1438b |
| Period (P) | 2 hours 10 minutes 37.0237 ±0.0002 seconds |
| Semi-major axis (a) | 0.001819(1) light seconds |
| Eccentricity (e) | <0.06 |
| Periastron epoch (T) | MJD 55411.0 |
| Details | |
| Mass | 1.4 M☉ |
| Radius | 19 km |
| Surface gravity (log g) | 13.69 cgs |
| Rotation | ~5.8 ms |
| Other designations | |
| PSR J1719-14 | |
| Database references | |
| SIMBAD | data |
PSR J1719-1438 is a millisecond pulsar with a spin period of 5.8 ms located about 4,000 ly from Earth in the direction of Serpens Cauda, one minute from the border with Ophiuchus. Millisecond pulsars are generally thought to begin as normal pulsars and then spin up by accreting matter from a binary companion.