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
Evolutionary stage	main sequence
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)
Absolute magnitude (MV)	+0.92
Details
Mass	2.5 M☉
Radius	3.0 R☉
Luminosity	72 L☉
Surface gravity (log g)	3.87 cgs
Temperature	9,661 K
Metallicity [Fe/H]	−0.01 dex
Rotational velocity (v sin i)	196 km/s
Age	462 Myr
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 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.
^ ^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.
^ ^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.
^ ^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.
^ 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.
^ 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.
^ ^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.
^ ^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.

External links

Image HD 219659

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[xhip-1] 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.

[van_Leeuwen2007-2] 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.

[alexander1971-3] 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.

[zorec2012-4] 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.

[houk1978-5] 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.

[Gontcharov-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.

[tic-7] 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.

[gontcharov2012-8] 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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Observation data Epoch J2000 Equinox J2000
Constellation	Aquarius^[1]
Right ascension	23^h 17^m 40.08278^s^[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 (R_v)	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]
Distance	400 ± 30 ly (121 ± 8 pc)
Absolute magnitude (M_V)	+0.92^[1]

Details

Mass	2.5^[7] `M`_☉
Radius	3.0^[7] `R`_☉
Luminosity	72^[7] `L`_☉
Surface gravity (log g)	3.87^[7] cgs
Temperature	9,661^[7] K
Metallicity [Fe/H]	−0.01^[8] dex
Rotational velocity (v sin i)	196^[4] km/s
Age	462^[8] Myr

Other designations
BD−12°6461, HD 219659, HIP 115015, HR 8856, SAO 165609.
Database references
SIMBAD	data