HD 127304

HD 127304
Observation data; Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14h 29m 49.67035s
Declination	+31° 47′ 28.2842″
Apparent magnitude (V)	6.05
Characteristics
Spectral type	A0Vs
U−B color index	−0.06
B−V color index	−0.03
Astrometry
Radial velocity (Rv)	−9.3 km/s
Proper motion (μ)	RA: −20.37 mas/yr ; Dec.: +7.73 mas/yr
Parallax (π)	9.08 ± 0.40 mas
Distance	360 ± 20 ly ; (110 ± 5 pc)
Details
Luminosity	36 L☉
Temperature	7,696 K
Rotational velocity (v sin i)	14 km/s
Other designations
	BD+32° 2482, HD 127304, HIP 70892, HR 5422, SAO 64178.
Database references
SIMBAD	data

HD 127304 is a double star in the northern constellation of Boötes. The brighter component is a sixth magnitude A-type main sequence star with a stellar classification of A0Vs^[3] It has a faint magnitude 10.62 companion at an angular separation of 25.6″ along a position angle of 256° (as of 2013).^[8]

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^ ^a ^b ^c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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 Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington D.C., Bibcode:1953GCRV..C......0W.
^ 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.
^ Muñoz Bermejo, J.; et al. (May 2013), "A PCA approach to stellar effective temperatures", Astronomy and Astrophysics, 453: A95, arXiv:1303.7218, Bibcode:2013A&A...553A..95M, doi:10.1051/0004-6361/201220961, S2CID 67752733.
^ Royer, F.; et al. (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, S2CID 18475298.
^ 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

External links[edit]

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[van_Leeuwen2007-1] 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, 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.

[aj74_375-3] Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.

[gcsrv-4] Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington D.C., Bibcode:1953GCRV..C......0W.

[Mcdonald_et_al_2012-5] 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.

[aa453_A95-6] Muñoz Bermejo, J.; et al. (May 2013), "A PCA approach to stellar effective temperatures", Astronomy and Astrophysics, 453: A95, arXiv:1303.7218, Bibcode:2013A&A...553A..95M, doi:10.1051/0004-6361/201220961, S2CID 67752733.

[aaa463_2_671-7] Royer, F.; et al. (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, S2CID 18475298.

[WDSC2014-8] 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 29^m 49.67035^s^[1]
Declination	+31° 47′ 28.2842″^[1]
Apparent magnitude (V)	6.05^[2]
Characteristics
Spectral type	A0Vs^[3]
U−B color index	−0.06^[2]
B−V color index	−0.03^[2]
Astrometry

Radial velocity (R_v)	−9.3^[4] km/s
Proper motion (μ)	RA: −20.37^[1] mas/yr Dec.: +7.73^[1] mas/yr
Parallax (π)	9.08 ± 0.40 mas^[1]
Distance	360 ± 20 ly (110 ± 5 pc)

Details

Luminosity	36^[5] `L`_☉
Temperature	7,696^[6] K
Rotational velocity (v sin i)	14^[7] km/s

Other designations
BD+32° 2482, HD 127304, HIP 70892, HR 5422, SAO 64178.
Database references
SIMBAD	data