Pi Aurigae
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Auriga |
| Right ascension | 05h 59m 56.0994s |
| Declination | +45° 56′ 12.248″ |
| Apparent magnitude (V) | 4.348 |
| Characteristics | |
| Spectral type | M3II |
| U−B color index | 1.48 |
| B−V color index | 1.83 |
| R−I color index | 1.48 |
| Variable type | irregular |
| Astrometry | |
| Radial velocity (Rv) | 0.8 km/s |
| Proper motion (μ) | RA: -2.42 mas/yr Dec.: -7.32 mas/yr |
| Parallax (π) | 3.88 ± 0.85 mas |
| Distance | approx. 800 ly (approx. 260 pc) |
| Absolute magnitude (MV) | 6.016 |
| Details | |
| Mass | 0.4 M☉ |
| Radius | 0.5 R☉ |
| Luminosity | 0.004 L☉ |
| Temperature | 2,000–3,500 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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Pi Aurigae (π Aur, π Aurigae) is a star in the constellation Auriga.
Pi Aurigae is a red M-type bright giant with a mean apparent magnitude of +4.30. It is approximately 840 light-years from Earth. It is classified as an irregular variable star and its brightness varies from magnitude +4.24 to +4.34.
[edit] References
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