9 Andromedae
Appearance
9 Andromedae | |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Andromeda |
Right ascension | 23h 18m 23.3242s |
Declination | +41° 46′ 25.233″ |
Apparent magnitude (V) | 5.997 |
Characteristics | |
Spectral type | A7m |
U−B color index | 0.17 |
B−V color index | 0.21 |
Variable type | Beta Lyrae |
Astrometry | |
Radial velocity (Rv) | -3.9 km/s |
Proper motion (μ) | RA: -9.58 mas/yr Dec.: -11.03 mas/yr |
Parallax (π) | 6.9 ± 0.75 mas |
Distance | approx. 470 ly (approx. 140 pc) |
Absolute magnitude (MV) | 0.17 |
Details | |
Mass | 3.1 M☉ |
Radius | 2.1 R☉ |
Luminosity | 40 L☉ |
Temperature | 7.500–10.000 K |
Metallicity | ? |
Rotation | 0.008815879534565366 Year |
Age | ? years |
Other designations | |
Database references | |
SIMBAD | data |
9 Andromedae or AN Andromedae is a star in the constellation Andromeda. Its apparent magnitude is 5.98.