Astronomy:64 Aquarii

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Short description: Star in the constellation Aquarius
64 Aquarii
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquarius
Right ascension  22h 39m 16.03872s[1]
Declination −10° 01′ 40.1750″[1]
Apparent magnitude (V) 6.93[2]
Characteristics
Spectral type G2/3 IV/V[3]
B−V color index 0.619±0.009[2]
Astrometry
Radial velocity (Rv)+10.7±0.5[4] km/s
Proper motion (μ) RA: −60.940[1] mas/yr
Dec.: +3.803[1] mas/yr
Parallax (π)10.4508 ± 0.1554[1] mas
Distance312 ± 5 ly
(96 ± 1 pc)
Absolute magnitude (MV)2.75[2]
Details[5]
Mass1.45±0.06 M☉
Radius2.78±0.07 R☉
Luminosity13.133±0.225[1] L☉
Surface gravity (log g)3.708±0.013 cgs
Temperature5,926±97 K
Metallicity [Fe/H]−0.02±0.11 dex
Rotational velocity (v sin i)8.75 km/s
Age2.63±0.26 Gyr
Other designations
BD−10° 5963, GC 31614, HD 214572, HIP 111843, SAO 165217[6]
Database references
SIMBADdata

64 Aquarii is a star located 312 light years away from the Sun in the zodiac constellation of Aquarius. 64 Aquarii is its Flamsteed designation. With an apparent visual magnitude of 6.93,[2] it is too faint to be readily visible to the naked eye. The star is moving further from the Earth with a heliocentric radial velocity of +11 km/s.[4]

The stellar classification for this star is G2/3 IV/V,[3] which indicates the spectrum displays mixed traits of a G-type main-sequence star and a more evolved subgiant star. It is 2.6 billion years old and is spinning with a projected rotational velocity of 8.75 km/s. The star has 1.45 times the mass of the Sun and 2.8 times the Sun's radius.[5] It is radiating 13[1] times the luminosity of the Sun from its photosphere at an effective temperature of 5,926 K.[5]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A. 
  3. ↑ 3.0 3.1 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. ↑ 4.0 4.1 Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters 32 (11): 759–771, doi:10.1134/S1063773706110065, Bibcode: 2006AstL...32..759G. 
  5. ↑ 5.0 5.1 5.2 Lund, Mikkel N. et al. (December 2016), "Asteroseismic Properties of Solar-type Stars Observed with the NASA K2 Mission: Results from Campaigns 1-3 and Prospects for Future Observations", Publications of the Astronomical Society of the Pacific 128 (970): 124204, doi:10.1088/1538-3873/128/970/124204, Bibcode: 2016PASP..128l4204L. 
  6. ↑ "64 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=64+Aqr. 



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