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62 Aquilae 
Summary
62 Aquilae is a single[7] star located about 427 light years away from the Sun in the equatorial constellation of Aquila. 62 Aquilae is its Flamsteed designation. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.67.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 04m 23.15129s[1] |
| Declination | −00° 42′ 33.5147″[1] |
| Apparent magnitude (V) | 5.67[2] |
| Characteristics | |
| Spectral type | K4 III[3] |
| B−V color index | 1.301±0.005[2] |
| Astrometry | |
| Radial velocity (Rv) | +0.2±2.9[4] km/s |
| Proper motion (μ) | RA: −3.923[1] mas/yr Dec.: –117.824[1] mas/yr |
| Parallax (π) | 7.7081 ± 0.1300 mas[1] |
| Distance | 423 ± 7 ly (130 ± 2 pc) |
| Absolute magnitude (MV) | 0.14[2] |
| Details[5] | |
| Mass | 0.89±0.25 M☉ |
| Radius | 22.89+0.94 −0.41[1] R☉ |
| Luminosity | 153±3[1] L☉ |
| Surface gravity (log g) | 1.69±0.11 cgs |
| Temperature | 4,246±92 K |
| Metallicity [Fe/H] | −0.54±0.05 dex |
| Age | 11.2+1.1 −1.0 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an aging giant star with a stellar classification of K4 III,[3] having exhausted the supply of hydrogen at its core and expanded to 23[1] times the girth of the Sun. It is 11.2 billion years old with 0.89 times the Sun's mass.[5] The star is radiating 153[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,246 K.[5]
References edit
- ^ a b c d e f g h i Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
- ^ a b Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey, 5, Bibcode:1999MSS...C05....0H.
- ^ Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065, S2CID 119231169.
- ^ a b c Feuillet, Diane K.; et al. (2016), "Determining Ages of APOGEE Giants with Known Distances", The Astrophysical Journal, 817 (1): 40, arXiv:1511.04088, Bibcode:2016ApJ...817...40F, doi:10.3847/0004-637X/817/1/40, S2CID 118675933.
- ^ "62 Aql". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 1, 2018.
- ^ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.