| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Draco |
| Right ascension | 16h 01m 41.01257s[2] |
| Declination | +66° 48′ 10.1312″[2] |
| Apparent magnitude (V) | 7.9 - 10.3[3] |
| Characteristics | |
| Spectral type | K3 IIIep[4] + WD[5] |
| B−V color index | 1.425±0.094[6] |
| Variable type | Z And[7] |
| Astrometry | |
| Radial velocity (Rv) | −147.42±0.30[6] km/s |
| Proper motion (μ) | RA: −7.135[2] mas/yr Dec.: −5.602[2] mas/yr |
| Parallax (π) | 0.2101 ± 0.0268 mas[2] |
| Distance | approx. 16,000 ly (approx. 4,800 pc) |
| Orbit[8] | |
| Period (P) | 549.73 d |
| Eccentricity (e) | 0.06 |
| Periastron epoch (T) | 2447622.28 JD |
| Argument of periastron (ω) (secondary) | 359.8° |
| Semi-amplitude (K1) (primary) | 4.67 km/s |
| Details[5] | |
| AG Dra A | |
| Mass | 1.5 M☉ |
| Radius | 35 R☉ |
| Metallicity [Fe/H] | −1.3 dex |
| AG Dra B | |
| Luminosity | ~ 103 L☉ |
| Temperature | ~ 105 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
AG Draconis is a binary star system in the northern constellation of Draco. It consists of a giant star and a white dwarf that revolve around each other every 550 days.
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