Pi Andromedae
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 Location of π Andromedae (center). |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 36m 52.8497s |
| Declination | +33° 43′ 09.637″ |
| Apparent magnitude (V) | 4.335 |
| Characteristics | |
| Spectral type | B5V |
| U−B color index | -0.55 |
| B−V color index | -0.14 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | 8.7 km/s |
| Proper motion (μ) | RA: 15.23 mas/yr Dec.: -3.56 mas/yr |
| Parallax (π) | 4.97 ± 0.82 mas |
| Distance | approx. 700 ly (approx. 200 pc) |
| Absolute magnitude (MV) | 4.223 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20 L☉ |
| Temperature | 10,000–30,000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
Pi Andromedae (π And, π Andromedae) is a spectroscopic binary in the constellation Andromeda. It is approximately 660 light years from Earth.
The pair is classified as a blue-white B-type main sequence dwarf with an apparent magnitude of +4.34. It is a spectroscopic binary with an orbital period of 143.6065 days. There is a 9th magnitude companion 35.9 arcseconds away. At 55 arcseconds separation is an 11th magnitude Pi Andromedae C companion.
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