HD 131040

HD 131040
Observation data; Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14h 49m 32.38252s
Declination	+51° 22′ 28.2072″
Apparent magnitude (V)	6.51
Characteristics
Spectral type	F5IV
U−B color index	+0.00
B−V color index	+0.40
Astrometry
Radial velocity (Rv)	-6.90 km/s
Proper motion (μ)	RA: +16.05 mas/yr ; Dec.: +1.71 mas/yr
Parallax (π)	17.51 ± 0.69 mas
Distance	186 ± 7 ly ; (57 ± 2 pc)
Details
Mass	1.53 M☉
Luminosity	6.8 L☉
Surface gravity (log g)	4.07 cgs
Temperature	6,707 K
Metallicity [Fe/H]	+0.04 dex
Age	1.80 Myr
Other designations
	BD+51° 1957, HD 131040, HIP 72508, HR 5537, SAO 29296.
Database references
SIMBAD	data

HD 131040 is a double star in the northern constellation of Boötes. The brighter component is a subgiant star that varies slightly in luminosity by 0.04 in magnitude.^[3] The magnitude 9.64 companion lies at an angular separation of 15.2″ along a position angle of 93°.^[7]

References[edit]

^ ^a ^b ^c ^d ^e van Leeuwen, F. (November 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^ ^a ^b ^c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.
^ ^a ^b Adelman, S. J.; Coursey, B. C.; Harris, E. A. (December 2000), "On the Variability of F1-F9 Luminosity Class III-V Stars", Information Bulletin on Variable Stars, 5003 (5003): 1, Bibcode:2000IBVS.5003....1A
^ 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 Casagrande, L.; et al. (2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy & Astrophysics. 530 (A138): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.
^ ^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.
^ 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

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[vanLeeuwen2007-1] van Leeuwen, F. (November 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.

[MERMILLIOD-2] Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M.

[Adelman2000-3] Adelman, S. J.; Coursey, B. C.; Harris, E. A. (December 2000), "On the Variability of F1-F9 Luminosity Class III-V Stars", Information Bulletin on Variable Stars, 5003 (5003): 1, Bibcode:2000IBVS.5003....1A

[Gontcharov-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, S2CID 119231169.

[aa530_A138-5] Casagrande, L.; et al. (2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy & Astrophysics. 530 (A138): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.

[Mcdonald2012-6] 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.

[WDSC2014-7] 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

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Observation data Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14^h 49^m 32.38252^s^[1]
Declination	+51° 22′ 28.2072″^[1]
Apparent magnitude (V)	6.51^[2]
Characteristics
Spectral type	F5IV^[3]
U−B color index	+0.00^[2]
B−V color index	+0.40^[2]
Astrometry

Radial velocity (R_v)	-6.90^[4] km/s
Proper motion (μ)	RA: +16.05^[1] mas/yr Dec.: +1.71^[1] mas/yr
Parallax (π)	17.51 ± 0.69 mas^[1]
Distance	186 ± 7 ly (57 ± 2 pc)

Details

Mass	1.53^[5] `M`_☉
Luminosity	6.8^[6] `L`_☉
Surface gravity (log g)	4.07^[5] cgs
Temperature	6,707^[6] K
Metallicity [Fe/H]	+0.04^[5] dex
Age	1.80^[5] Myr

Other designations
BD+51° 1957, HD 131040, HIP 72508, HR 5537, SAO 29296.
Database references
SIMBAD	data