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9 Andromedae
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 |
|---|
AN Andromedae, 2MASS J23182331+4146251, TYC 3225-3348-1, GSC 03225-03348, PPM 64041, uvby98 100219815 V, AG+41° 2289, HD 219815, SAO 52881, YPAC 221, BD+40° 5043, HIC 115065, SBC7 956, GC 32447, HIP 115065, GCRV 14617, HR 8864, TD1 29765. |
| Database references |
|---|
| SIMBAD | data |
9 Andromedae or AN Andromedae is a star in the constellation Andromeda. Its apparent magnitude is 5.98.
References
