Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 19h 50m 46.78324s [1] |
Declination | −10° 45′ 48.6319″ [1] |
Apparent magnitude (V) | 5.39 [2] |
Characteristics | |
Spectral type | F5 V Fe-1 CH-0.7 [3] |
B−V color index | +0.38 [2] |
Astrometry | |
Radial velocity (Rv) | +6 [4] km/s |
Proper motion (μ) |
RA: -33.35
[1]
mas/
yr Dec.: +32.88 [1] mas/ yr |
Parallax (π) | 35.88 ± 0.35 mas [1] |
Distance | 90.9 ± 0.9
ly (27.9 ± 0.3 pc) |
Absolute magnitude (MV) | 3.16 [5] |
Details | |
Surface gravity (log g) | 4.16 [3] cgs |
Temperature | 6,812 [3] K |
Metallicity [Fe/H] | –0.18 [3] dex |
Rotational velocity (v sin i) | 77.5 [6] km/s |
Age | 1.6 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
51 Aquilae (abbreviated 51 Aql) is a star in the equatorial constellation of Aquila. 51 Aquilae is its Flamsteed designation. It has an apparent visual magnitude of 5.39, [2] which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 35.88 mas, [1] the distance to this star is around 90.9 light-years (27.9 parsecs).
This is an F-type main sequence star with a stellar classification of F5 V Fe-1 CH-0.7; [3] where the 'Fe-1' and 'CH-0.7' represent abundance deficiencies of iron and the molecule CN, respectively. It is about 1.6 [5] billion years old and is spinning relatively quickly with a projected rotational velocity of 77.5 km/s. [6] The outer atmosphere has an effective temperature of 6,812 K, [3] giving it the yellow-white hue characteristic of an F-type star. [8]