42 Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.45[1] |
| Characteristics | |
| Spectral type | F3 IV/V[3] |
| B−V Template:Engvar | Script error: No such module "val".[1] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[4] km/s |
| Proper motion (μ) | RA: +105.381[2] mas/yr Dec.: –53.557[2] mas/yr |
| Parallax (π) | 31.1671±0.1422 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 2.98[5] |
| Details | |
| Mass | 1.26[6] Template:Solar mass |
| Luminosity | 5.76[1] Template:Solar luminosity |
| Surface gravity (log g) | 4.00[6] cgs |
| Temperature | Script error: No such module "val".[4] K |
| Metallicity [Fe/H] | 0.17[4] dex |
| Rotational velocity (v sin i) | Script error: No such module "val".[5] km/s |
| Age | 1.283[6] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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42 Aquilae, abbreviated 42 Aql, is a single[8] star in the equatorial constellation of Aquila. 42 Aquilae is its Flamsteed designation. It is a dim star but visible to the naked eye under suitable viewing conditions, having an apparent visual magnitude of 5.45.[1] 42 Aql is located some 104.6 light years away, as determined from its annual parallax shift of Script error: No such module "val"..[2] it is moving closer to the Earth with a heliocentric radial velocity of −38 km/s,[4] and is predicted to come to within Script error: No such module "convert". of the Sun in around 752,000 years.[1]
The stellar classification of this star is F3 IV/V,[3] which matches an F-type star with blended spectral traits of a main sequence star and a subgiant star. It is around 1.3[6] billion years old with a relatively high rate of rotation, having a projected rotational velocity of 87 km/s.[5] The star has 1.26[6] times the mass of the Sun and is radiating 5.76[1] times the Sun's luminosity from its photosphere at an effective temperature of 6,749 K.[4] These coordinates are a source of X-ray emission, which is most likely (99.3% chance) coming from the star.[9]
References
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- ↑ a b c d e f g Script error: No such module "citation/CS1".
- ↑ a b c d e f Template:Cite DR2
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- ↑ a b c Script error: No such module "citation/CS1".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
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- ↑ Script error: No such module "citation/CS1".
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