HD 219659

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

HD 219659
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension  23h 17m 40.08278s[1]
Declination −11° 42′ 46.5910″[1]
Apparent magnitude (V) 6.33[2]
Characteristics
Spectral type A1/A2IV/V[3]
U−B color index +0.00[2]
B−V color index +0.05[2]
Astrometry
Radial velocity (Rv)2.2[4] km/s
Proper motion (μ) RA: +40.58[1] mas/yr
Dec.: +5.32[1] mas/yr
Parallax (π)8.24 ± 0.53[1] mas
Distance400 ± 30 ly
(121 ± 8 pc)
Details
Radius1.9[5] R☉
Rotational velocity (v sin i)196[6] km/s
Other designations
BD-12° 6461, HD 219659, HIP 115015, HR 8856, SAO 165609.
Database references
SIMBADdata

References
  1. 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.
  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): 353–361, Bibcode:1971RGOB..169..351A
  3. 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
  4. 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.
  5. Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451
  6. Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224
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