HD 151566

HD 151566
Observation data; Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	16h 50m 36.07960s
Declination	−50° 02′ 41.8040″
Apparent magnitude (V)	6.45 (7.17 + 7.33)
Characteristics
Spectral type	A5III + F7III
U−B color index	+0.07
B−V color index	+0.33
Astrometry
Radial velocity (Rv)	24.6±1.6 km/s
Proper motion (μ)	RA: -7.97 mas/yr ; Dec.: -2.84 mas/yr
Parallax (π)	6.19 ± 1.22 mas
Distance	approx. 500 ly ; (approx. 160 pc)
Details
Luminosity	51.5 L☉
Temperature	7,000 K
Other designations
	CD-49° 10998, HD 151566, HIP 82418, HR 6236.
Database references
SIMBAD	data

HD 151566 is double star in the southern constellation of Ara. As of 1991, the pair had an angular separation of 3.10″ along a position angle of 42°.^[3]

References[edit]

^ ^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 Hurly, P. R. (1975), "Combined-light UBV Photometry of 103 Bright Southern Visual Doubles", Monthly Notes of the Astronomical Society of Southern Africa, 34: 7, Bibcode:1975MNSSA..34....7H.
^ ^a ^b Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22.
^ Hoffleit, D.; Warren Jr, W. H. (1991), Bright Star Catalogue (5th Revised (Preliminary Version) ed.), Astronomical Data Center, NSSDC/ADC, retrieved 2015-08-17.
^ 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 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.

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Observation data Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	16^h 50^m 36.07960^s^[1]
Declination	−50° 02′ 41.8040″^[1]
Apparent magnitude (V)	6.45^[2] (7.17 + 7.33)^[3]
Characteristics
Spectral type	A5III + F7III^[4]
U−B color index	+0.07^[2]
B−V color index	+0.33^[2]
Astrometry

Radial velocity (R_v)	24.6±1.6^[5] km/s
Proper motion (μ)	RA: -7.97^[1] mas/yr Dec.: -2.84^[1] mas/yr
Parallax (π)	6.19 ± 1.22 mas^[1]
Distance	approx. 500 ly (approx. 160 pc)

Details

Luminosity	51.5^[6] `L`_☉
Temperature	7,000^[6] K

Other designations
CD-49° 10998, HD 151566, HIP 82418, HR 6236.
Database references
SIMBAD	data