23 Aquilae
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 18m 32.49608s[1] |
| Declination | +01° 05′ 06.4602″[1] |
| Apparent magnitude (V) | 5.10[2] |
| Characteristics | |
| Spectral type | K2 Iab[3] |
| U−B color index | +1.01[2] |
| B−V color index | +1.15[2] |
| R−I color index | 0.58 |
| Astrometry | |
| Radial velocity (Rv) | –23.13 ± 0.19[4] km/s |
| Proper motion (μ) | RA: +12.30[1] mas/yr Dec.: +17.47[1] mas/yr |
| Parallax (π) | 8.79 ± 0.51 mas |
| Distance | 370 ± 20 ly (114 ± 7 pc) |
| Details | |
| Rotational velocity (v sin i) | 10[5] km/s |
| Other designations | |
23 Aquilae (abbreviated 23 Aql) is a binary star[7] in the equatorial constellation of Aquila. 23 Aquilae is its Flamsteed designation. It is at a distance of about 370 light-years (110 parsecs) with an apparent visual magnitude of 5.10.[2] The brightness of the star is diminished by 0.21 in magnitude because of extinction from interstellar dust and gas.[4] The primary component of this system is a magnitude 5.31 K-type supergiant star with a stellar classification of K2 Iab.[3] At an angular separation of 3.25 arcseconds is a magnitude 8.76 companion star.[7]
References
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