Astronomy:HD 219659

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Short description: Suspected variable star in the constellation Aquarius
HD 219659
Observation data
Equinox J2000.0]] (ICRS)
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[2] mas
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. ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. 
  3. ↑ 3.0 3.1 3.2 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. ↑ 4.0 4.1 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z. 
  5. ↑ Houk, Nancy; Smith-Moore, M. (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. 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. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  8. ↑ 8.0 8.1 Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters 38 (12): 771. doi:10.1134/S1063773712120031. Bibcode: 2012AstL...38..771G. 



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