15 Draconis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Draco |
| Right ascension | 16h 27m 59.01603s |
| Declination | +68° 46′ 05.3051″ |
| Apparent magnitude (V) | 4.94 |
| Characteristics | |
| Spectral type | A0 III |
| B−V color index | −0.051±0.006 |
| Astrometry | |
| Radial velocity (Rv) | −6.7±2.8 km/s |
| Proper motion (μ) | RA: −24.818 mas/yr Dec.: +33.623 mas/yr |
| Parallax (π) | 7.2102±0.1296 mas |
| Distance | 452 ± 8 ly (139 ± 2 pc) |
| Absolute magnitude (MV) | −0.93 |
| Details | |
| Radius | 3.3 R☉ |
| Luminosity | 285.53 L☉ |
| Surface gravity (log g) | 3.4 cgs |
| Temperature | 9,980 K |
| Rotational velocity (v sin i) | 154 km/s |
| Other designations | |
| A Draconis, 15 Dra, BD+69°850, FK5 619, HD 149212, HIP 80650, HR 6161, SAO 17107 | |
| Database references | |
| SIMBAD | data |
15 Draconis is a single star in the northern circumpolar constellation of Draco, located 452 light years away from the Sun. 15 Draconis is the Flamsteed designation; it also has the Bayer designation A Draconis. This object is visible to the naked eye as a white-hued star with an apparent visual magnitude of 4.94. It is moving closer to the Earth with a heliocentric radial velocity of −7 km/s.
This star has a stellar classification of A0 III, matching that of an A-type giant star. It has a relatively high rate of spin with a projected rotational velocity of 154 km/s. The star is radiating 286 times the Sun's luminosity from its photosphere at an effective temperature of 9,980 K.