| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 18h 50m 45.5515s[1] |
| Declination | +10° 58′ 34.9970″[1] |
| Apparent magnitude (V) | 6.36[2] |
| Characteristics | |
| Spectral type | K5III + K3III-IV[3] |
| U−Bcolor index | +1.63[2] |
| B−Vcolor index | +1.44[2] |
| Astrometry | |
| A | |
| Radial velocity (Rv) | −25.61±0.14[4] km/s |
| Proper motion (μ) | RA: +8.168mas/yr[4] Dec.: +5.959mas/yr[4] |
| Parallax (π) | 4.4674±0.0200 mas[4] |
| Distance | 730 ± 3 ly (224 ± 1 pc) |
| B | |
| Radial velocity (Rv) | −27[5] km/s |
| Proper motion (μ) | RA: +8.623 mas/yr[1] Dec.: +6.146 mas/yr[1] |
| Parallax (π) | 4.4157 ± 0.0232 mas[6] |
| Distance | 739 ± 4 ly (226 ± 1 pc) |
| Details | |
| A | |
| Radius | 28.33[7] R☉ |
| Luminosity | 204[7] L☉ |
| Temperature | 4,097[7] K |
| Other designations | |
| BD+10° 3685,HD 174569,HIP 92475,HR 7099,SAO 104170. | |
| Database references | |
| SIMBAD | data |
HD 174569 is aspectroscopic binary[3] star system in the equatorialconstellation ofAquila. Based onstellar parallax measurements byGaia, it is about 730-740 light-years (400 parsecs) away.[4][6]
Both components aregiant stars that exhausted their hydrogen supply. Star A has a class K5III, while star B has a class K3III-IV.[3]
 | This binary or multiple star system–related article is astub. You can help Wikipedia byexpanding it. |
