62 Aquilae

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]

62 Aquilae
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[1] mas
Distance423 ± 7 ly
(130 ± 2 pc)
Absolute magnitude (MV)0.14[2]
Details[5]
Mass0.89±0.25 M☉
Radius22.89+0.94
−0.41[1] R☉
Luminosity153±3[1] L☉
Surface gravity (log g)1.69±0.11 cgs
Temperature4,246±92 K
Metallicity [Fe/H]−0.54±0.05 dex
Age11.2+1.1
−1.0 Gyr
Other designations
62 Aql, BD−01° 3887, GC 27832, HD 190299, HIP 98844, HR 7667, SAO 144045[6]
Database references
SIMBADdata

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
  1. 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.
  2. 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.
  3. Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey, 5, Bibcode:1999MSS...C05....0H.
  4. Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
  5. Feuillet, Diane K.; et al. (2016), "Determining Ages of APOGEE Giants with Known Distances", The Astrophysical Journal, 817: 40, arXiv:1511.04088, Bibcode:2016ApJ...817...40F, doi:10.3847/0004-637X/817/1/40.
  6. "62 Aql". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 1, 2018.
  7. 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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.