![]() ![]() Location of γ Draconis (circled) near the center |
|
Observation data Epoch J2000 Equinox J2000 |
|
---|---|
Constellation | Draco |
Right ascension | 17 |
Declination | 51° 29′ 20.0242″ |
Apparent magnitude (V) | 2.3617 |
Characteristics | |
Spectral type | K5 III |
U−B color index | +1.87 |
B−V color index | +1.52 |
Astrometry | |
Radial velocity (Rv) | –28.19 ± 0.36 km/s |
Proper motion (μ) | RA: –8.48 mas/yr |
Parallax (π) | 21.14 ± 0.10mas |
Distance | 154.3 ± 0.7 ly (47.3 ± 0.2 pc) |
Absolute magnitude (MV) | −1.93 ± 0.07 |
Details | |
Mass | 1.72M☉ |
Radius | 48.15 ± 1.09R☉ |
Luminosity | 471 ± 30L☉ |
Surface gravity (log g) | 1.55 |
Temperature | 3,930K |
Metallicity [Fe/H] | –0.14dex |
Rotational velocity (v sin i) | 6.0 km/s |
Other designations | |
Etamin, Etanin, Ettanin, Rastaban, Rasaben, Zenith star, 33 Draconis, BD +51°2282, FK5 676, HD 164058, HIP 87833, HR 6705, SAO 30653.
|
|
Database references | |
SIMBAD | data |