22 Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.59[2] |
| Characteristics | |
| Spectral type | A1 V[3] or A3 IV[4] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[5] km/s |
| Proper motion (μ) | RA: +14.306[1] mas/yr Dec.: –11.083[1] mas/yr |
| Parallax (π) | 4.7392±0.0910 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.48[2] |
| Details | |
| Mass | Script error: No such module "val".[6] Template:Solar mass |
| Luminosity | Script error: No such module "val".[6] Template:Solar luminosity |
| Temperature | Script error: No such module "val".[6] K |
| Rotational velocity (v sin i) | 70[6] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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22 Aquilae, abbreviated 22 Aql, is a star in the equatorial constellation of Aquila. 22 Aquilae is its Flamsteed designation. It is a faint star but visible to the naked eye with an apparent visual magnitude of 5.59.[2] The distance to 22 Aql can be estimated from its annual parallax shift of Script error: No such module "val".,[1] which yields a separation of 690 light years. It is moving closer to the Earth with a heliocentric radial velocity of −23 km/s.[5]
Cowley et al. (1969) assigned this star a stellar classification of A3 IV,[4] matching an evolving subgiant star that has exhausted the hydrogen at its core. Houk and Swift (1999) reassigned it as an A-type main-sequence star with a class of A1 V.[3] It has nearly three times the mass of the Sun and is spinning with a projected rotational velocity of 70 km/s.[6] The star is radiating 161[6] times the Sun's luminosity from its photosphere at an effective temperature of 8,453 K.[6]
References
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- ↑ a b c d e f Template:Cite DR2
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- ↑ a b c d e f g Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
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