Pi4 Orionis
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| Observation data Equinox J2000 |
|
|---|---|
| Constellation | Orion (constellation) |
| Right ascension | 04h 51m 12.4s |
| Declination | 05° 36' 18.4" |
| Apparent magnitude (V) | 3.67 |
| Characteristics | |
| Spectral type | B2 III |
| U-B color index | −0.81 |
| B-V color index | −0.16 |
| Variable type | |
| Astrometry | |
| Radial velocity (Rv) | 23.3 km/s |
| Proper motion (μ) | RA: −3.62 mas/yr Dec.: 1.03 mas/yr |
| Parallax (π) | 2.59 ± 0.80 mas |
| Distance | approx. 1300 ly (approx. 400 pc) |
| Details | |
| Mass | M☉ |
| Radius | R☉ |
| Luminosity | L☉ |
| Temperature | 22,100 K |
| Metallicity | 50% Sun |
| Rotation | |
| Age | years |
| Other designations | |
| Database references | |
| SIMBAD | data |
Pi4 Orionis (π4 Ori / π4 Orionis) is a spectroscopic binary star in the constellation Orion. It is about 1,300 light years away and is one of the most luminous stars known. It is one of a series of stars that share the Bayer designation Pi Orionis.
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