Kappa Cephei
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Cepheus |
| Right ascension | 20h 08m 53.3469s |
| Declination | +77° 42′ 41.110″' |
| Apparent magnitude (V) | 4.38 |
| Characteristics | |
| Spectral type | B9III / B9 / ? |
| U-B color index | -0.11 |
| B-V color index | -0.05 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -22.8 ± 0.9 km/s |
| Proper motion (μ) | RA: 11.11 mas/yr Dec.: 23.72 mas/yr |
| Parallax (π) | 9.97 ± 0.47 mas |
| Distance | 330 ± 20 ly (100 ± 5 pc) |
| Absolute magnitude (MV) | 4.355 |
| Details | |
| Mass | ? M☉ |
| Radius | ? R☉ |
| Luminosity | ? L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Other designations | |
| Visual binary orbit | |
| Companion | κ Cep B |
| Period (P) | ? yr |
| Semimajor axis (a) | 7.3 arcsec |
| Eccentricity (e) | ? |
| Visual binary orbit | |
| Companion | κ Cep C |
| Period (P) | ? yr |
| Semimajor axis (a) | 169.8 arcsec |
| Eccentricity (e) | ? |
κ Cep ,triple star.
