69 Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 4.91[2] |
| Characteristics | |
| Evolutionary stage | red clump[3] |
| Spectral type | K1/2 III[4] |
| B−V Template:Engvar | 1.162[5] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[1] km/s |
| Proper motion (μ) | RA: +70.355[1] mas/yr Dec.: −21.523[1] mas/yr |
| Parallax (π) | 16.2388±0.2271 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 0.97[2] |
| Details[5] | |
| Mass | 1.54[6] Template:Solar mass |
| Radius | 11 Template:Solar radius |
| Luminosity | 45.7 Template:Solar luminosity |
| Surface gravity (log g) | 2.5 cgs |
| Temperature | Script error: No such module "val". K |
| Metallicity [Fe/H] | 0.03 dex |
| Rotational velocity (v sin i) | 4.0 km/s |
| Age | 3.44[6] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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69 Aquilae, abbreviated 69 Aql, is a star in the equatorial constellation of Aquila. 69 Aquilae is its Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.91.[2] Based upon an annual parallax shift of Script error: No such module "val".,[1] it is located 201 light years away. The star is moving closer to the Earth with a heliocentric radial velocity of −22.5 km/s.[1]
The stellar classification of 69 Aquilae is K1/2 III,[4] which means this is an evolved giant star. It belongs to a sub-category called the red clump, indicating that it is on the horizontal branch and is generating energy through helium fusion at its core.[3] The star is about 3.4 billion years old with 1.54[6] times the mass of the Sun and has expanded to 11 times the Sun's radius.[5] It is radiating 45.7 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,529 K.[5]
References
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- ↑ a b c d e f g h Template:Cite DR2
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- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
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