HD 219659

HD 219659
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	23h 17m 40.08278s
Declination	−11° 42′ 46.5910″
Apparent magnitude (V)	6.33
Characteristics
Spectral type	A1/A2IV/V
U−B color index	+0.00
B−V color index	+0.05
Astrometry
Radial velocity (Rv)	2.2 km/s
Proper motion (μ)	RA: +40.58 mas/yr ; Dec.: +5.32 mas/yr
Parallax (π)	8.24 ± 0.53 mas
Distance	400 ± 30 ly ; (121 ± 8 pc)
Details
Radius	1.9 R☉
Rotational velocity (v sin i)	196 km/s
Other designations
	BD-12° 6461, HD 219659, HIP 115015, HR 8856, SAO 165609.
Database references
SIMBAD	data

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

References

^ ^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.
^ ^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): 353−361, Bibcode:1971RGOB..169..351A
^ 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:1988MSS...C04....0H
^ 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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
^ 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
^ 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

This variable star–related article is a stub. You can help Wikipedia by expanding it.

This subgiant-star-related article is a stub. You can help Wikipedia by expanding it.

Observation data Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	23^h 17^m 40.08278^s^[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 (R_v)	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 mas^[1]
Distance	400 ± 30 ly (121 ± 8 pc)

Details

Radius	1.9^[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
SIMBAD	data