BP Crucis
Star in the constellation Crux / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about BP Crucis?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
BP Crucis (x-ray source GX 301-2) is an X-ray binary system containing a blue hypergiant and a pulsar.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Crux |
Right ascension | 12h 26m 37.561s[1] |
Declination | −62° 46′ 13.16″[1] |
Apparent magnitude (V) | 10.83[2] |
Characteristics | |
Spectral type | B1 Ia+[3] |
U−B color index | +0.42[2] |
B−V color index | +1.76[2] |
Variable type | Ellipsoidal + X-ray[4] |
Astrometry | |
Parallax (π) | 0.34 ± 0.75 mas[5] |
Distance | 3,040[2] pc |
Absolute magnitude (MV) | −7.47[3] |
Orbit | |
Period (P) | 41.498 days[2] |
Semi-major axis (a) | 0.00029" (191.7 R☉[6]) |
Eccentricity (e) | 0.462[2] |
Inclination (i) | 60[6]° |
Details | |
Mass | 43[3] M☉ |
Radius | 70[3] R☉ |
Luminosity (bolometric) | 470,000[3] L☉ |
Surface gravity (log g) | 2.38[3] cgs |
Temperature | 18,100[3] K |
Rotational velocity (v sin i) | 55[3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
Close