| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 11m 10.28s [1] |
| Declination | +37° 43′ 26.9″ [1] |
| Apparent magnitude (V) | 5.784 |
| Characteristics | |
| Spectral type | B7III-IV |
| U−B color index | -0.4 |
| B−V color index | -0.1 |
| Astrometry | |
| Radial velocity (Rv) | -0.7 km/s |
| Proper motion (μ) | RA: -14.94 ± 0.39 [1] mas/yr Dec.: -5.21 ± 0.30 [1] mas/yr |
| Parallax (π) | 4.13 ± 0.38[1] mas |
| Distance | 790 ± 70 ly (240 ± 20 pc) |
| Absolute magnitude (MV) | 5.69 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20.000 L☉ |
| Temperature | 10.000–30.000 K |
| Metallicity | ? |
| Rotation | 0,0138797 Year |
| Age | ? years |
| Orbit | |
| Companion | 45 Andromedae B |
| Semimajor axis (a) | 0.4" |
| Inclination (i) | 280° |
| Other designations | |
| Database references | |
| SIMBAD | data |
45 Andromedae is a star in the constellation Andromeda. Its apparent magnitude is 5.80. It is approximately 790 light years from Earth.[1]
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