 The location of PSR J1302−6350 (circled in red) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 02m 47.654s[2] |
| Declination | −63° 50′ 08.63″[2] |
| Apparent magnitude (V) | 9.98[3] |
| Characteristics | |
| Evolutionary stage | Pulsar +Main sequence[4] |
| Spectral type | O9.5Ve[4] |
| Astrometry | |
| Proper motion (μ) | RA: −7.093[2]mas/yr Dec.: −0.342[2]mas/yr |
| Parallax (π) | 0.4434±0.0133 mas[2] |
| Distance | 7,400 ± 200 ly (2,260 ± 70 pc) |
| Orbit[5] | |
| Companion | SS 2883 |
| Period (P) | 3.389years (1,237days) |
| Eccentricity (e) | 0.87 |
| Inclination (i) | 36° |
| Details | |
| Pulsar | |
| Rotation | 47.7625075ms |
| Age | 332,000 years |
| O-type star | |
| Mass | 22.5[6] M☉ |
| Radius | 10.4[2] R☉ |
| Luminosity | 160,000[7] L☉ |
| Surface gravity (log g) | 3.84[8] cgs |
| Temperature | 35,610[8] K |
| Rotational velocity (v sin i) | 280 km/s |
| Other designations | |
| AAVSO 1256−63,ALS 2883,AX J1302−638,CPD-63° 2495,GSC 08997-01597,Hbg 757,Hen 3-852,INTREF 538,LS 2883,MSX6C G304.1845-00.9916, PSR B1259−63PSR J1302−6350,THA 17-8,TYC 8997-1597-1,UCAC2 3710789,WRAY 15-1053[9] | |
| Database references | |
| SIMBAD | data |
PSR B1259−63 is apulsar and member of an eclipsingbinary star system with the blue O9.5Ve-class starSS 2883. The pair has an eccentric orbit that is inclined to the line of sight from Earth by about 36°, leading to a 40-day-long eclipse each time the pulsar passes behind the star.[5] The pulsar has a period of 47.762milliseconds (ms) and a luminosity of8.3 × 1035 erg/s. It emits very high energygamma rays that vary on a time scale of several days.[10]
The star SS 2883 has about 22.5solar masses and is 10.4solar radii in size. The rate of rotation is about 280 km/s at the equator, or 70% of the breakup velocity.[5]
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 | This binary or multiple star system–related article is astub. You can help Wikipedia byexpanding it. |
 | This variable star–related article is astub. You can help Wikipedia byexpanding it. |
 | This article about a compact object is astub. You can help Wikipedia byexpanding it. |
