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Alpha Pavonis
Star in the southern constellation Pavo / From Wikipedia, the free encyclopedia
Alpha Pavonis (α Pavonis, abbreviated Alpha Pav, α Pav), formally named Peacock /ˈpiːkɒk/, is a binary star in the southern constellation of Pavo, near the border with the constellation Telescopium.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pavo |
Right ascension | 20h 25m 38.85705s[1] |
Declination | −56° 44′ 06.3230″[1] |
Apparent magnitude (V) | 1.94[2] |
Characteristics | |
Spectral type | B3 V[3] |
U−B color index | −0.71[2] |
B−V color index | −0.20[2] |
Astrometry | |
Radial velocity (Rv) | +2.0[4] km/s |
Proper motion (μ) | RA: 6.90[1] mas/yr Dec.: −86.02[1] mas/yr |
Parallax (π) | 18.24 ± 0.52 mas[1] |
Distance | 179 ± 5 ly (55 ± 2 pc) |
Absolute magnitude (MV) | −1.762[5] |
Details | |
Mass | 5.91[6] M☉ |
Radius | 4.83[7] R☉ |
Luminosity | 2,200[7] L☉ |
Surface gravity (log g) | 3.94[6] cgs |
Temperature | 17,711[6] K |
Rotational velocity (v sin i) | 16[6] km/s |
Age | 48[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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