HD 219659

HD 219659
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius[1]
Right ascension 23h 17m 40.08278s[2]
Declination −11° 42′ 46.5910″[2]
Apparent magnitude (V) 6.33[3]
Characteristics
Evolutionary stage main sequence[4]
Spectral type A1/A2IV/V[5]
U−B color index +0.00[3]
B−V color index +0.05[3]
Astrometry
Radial velocity (Rv)2.2[6] km/s
Proper motion (μ) RA: +40.58[2] mas/yr
Dec.: +5.32[2] mas/yr
Parallax (π)8.24±0.53 mas[2]
Distance400 ± 30 ly
(121 ± 8 pc)
Absolute magnitude (MV)+0.92[1]
Details
Mass2.5[7] M☉
Radius3.0[7] R☉
Luminosity72[7] L☉
Surface gravity (log g)3.87[7] cgs
Temperature9,661[7] K
Metallicity [Fe/H]−0.01[8] dex
Rotational velocity (v sin i)196[4] km/s
Age462[8] Myr
Other designations
BD−12°6461, HD 219659, HIP 115015, HR 8856, SAO 165609.
Database references
SIMBADdata

HD 219659 is suspected variable star in the equatorial constellation of Aquarius.

References

  1. ^ a b 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.
  2. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
  3. ^ a b c Alexander, J. B.; Carter, B. S. (1971). "Motion of A0 stars perpendicular to the galactic plane. V. (U, B, V) photometry of A stars in the south galactic cap". Royal Observatory Bulletin, Greenwich-Cape. 169 (169): 353–361. Bibcode:1971RGOB..169..351A.
  4. ^ a b Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.
  5. ^ Houk, Nancy; Smith-Moore, M. (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 4. Ann Arbor: Dept. of Astronomy, University of Michigan. Bibcode:1988mcts.book.....H.
  6. ^ 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  7. ^ a b c d e Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
  8. ^ a b Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.
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