Kappa Andromedae
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| Observation data Epoch J2000 |
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|---|---|
| Constellation (pronunciation) |
Andromeda |
| Right ascension | 23h 40m 24.5081s |
| Declination | +44° 20' 02.154"' |
| Apparent magnitude (V) | 4.137 |
| Characteristics | |
| Spectral type | B9IVn |
| U-B color index | -0.26 |
| B-V color index | -0.08 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -9 km/s |
| Proper motion (μ) | RA: 81.33 mas/yr Dec.: -18.96 mas/yr |
| Parallax (π) | 19.22 ± 0.65 mas |
| Distance | 170 ± 6 ly (52 ± 2 pc) |
| Absolute magnitude (MV) | 4.076 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Surface gravity (log g) | ? |
| Luminosity | 20.000 L☉ |
| Temperature | 10.000–30.000 K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Visual binary orbit | |
| Companion | κ Andromedae B |
| Semimajor axis (a) | 46.8" |
| Inclination (i) | 194° |
| Visual binary orbit | |
| Companion | κ Andromedae C |
| Semimajor axis (a) | 107" |
| Inclination (i) | 294° |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
Kappa Andromedae (κ And / κ Andromedae) is a star in the constellation Andromeda.
Kappa Andromedae is a blue-white B-type subgiant with an apparent magnitude of +4.15. It is approximately 170 light years from Earth.
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| κ Andromedae B (ADS 16916 B) | 23h 40m 23s | +44° 19' 17 | 11.3 | Simbad | |
| κ Andromedae C (ADS 16916 C) | 23h 40m 24s | +44° 20' | 11.3 | Simbad |
[edit] Reference
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