8 Andromedae
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 17m 44.65s [1] |
| Declination | +49° 00′ 55.1″ [1] |
| Apparent magnitude (V) | 4.85 |
| Characteristics | |
| Spectral type | M2III |
| U−B color index | 1.98 |
| B−V color index | 1.67 |
| Variable type | Variable Star |
| Astrometry | |
| Radial velocity (Rv) | -8.0 km/s |
| Proper motion (μ) | RA: 34.55 ± 0.19 [1] mas/yr Dec.: 7.17 ± 0.19 [1] mas/yr |
| Parallax (π) | 5.79 ± 0.28[1] mas |
| Distance | 560 ± 30 ly (173 ± 8 pc) |
| Absolute magnitude (MV) | 6.52 |
| Details | |
| Mass | ? M☉ |
| Radius | ? R☉ |
| Luminosity | ? L☉ |
| Surface gravity (log g) | ? |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Orbit | |
| Companion | 8 Andromedae B |
| Semimajor axis (a) | 7.6" |
| Inclination (i) | 161° |
| Orbit | |
| Companion | 8 Andromedae C |
| Semimajor axis (a) | 219.4" |
| Inclination (i) | 131° |
| Orbit | |
| Companion | 8 Andromedae D |
| Semimajor axis (a) | 54.9" |
| Inclination (i) | 232° |
| Orbit | |
| Companion | 8 Andromedae E |
| Semimajor axis (a) | 14" |
| Inclination (i) | 173° |
| Orbit | |
| Companion | 8 Andromedae F |
| Semimajor axis (a) | 6.4" |
| Inclination (i) | 185° |
| Other designations | |
|
ZI 2130, GC 32432, IRAS 23154+4844, SAO 52871, 8 And, GCRV 14610, IRC +50462, ADS 16656 A, JP11 3614, UBV M 26942, AG+48° 2032, HD 219734, 2MASS J23174463+4900549, UBV 19954, BD+48° 3991, NSV 14484, CCDM J23178+4901A, HIP 115022, PLX 5637, CSI+48° 3991 1, HR 8860, PPM 64030, CSV 102239, IDS 23131+4828 A, RAFGL 3065.
|
|
| Database references | |
| SIMBAD | data |
8 Andromedae is a red giant star in the constellation Andromeda. Its apparent magnitude is 4.85.
[edit] Component
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| 8 Andromedae B (BD+48 3991B) | 23h 17m 44.7s | +49° 00' 47 | 13 | Simbad | |
| 8 Andromedae C (BD+48 3991C) | 23h 18m 01.2565s | +48° 58' 31.299 | 10.7 | Simbad | |
| 8 Andromedae D (BD+48 3991D) | 23h 17m 40.0s | +49° 00' 20 | 11.6 | Simbad | |
| 8 Andromedae E (CCDM J23178+4901P) Star in double system |
23h 17m 44.7s | +49° 00' 40 | 16.0 | Simbad |
[edit] References
- ^ a b c d e van Leeuwen, F. (2007). "HIP 115022". Hipparcos, the New Reduction. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=114636. Retrieved 2010-03-21.
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