HD 127726

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HD 127726
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 32m 20.22613s[1]
Declination +26° 40′ 38.224″[1]
Apparent magnitude (V) 5.88[2] (6.61 + 7.08)[3]
Characteristics
Spectral type A7Vn + F0[4]
U−B color index +0.08[2]
B−V color index +0.21[2]
Astrometry
Radial velocity (Rv) −4[5] km/s
Proper motion (μ) RA: −69.68[1] mas/yr
Dec.: −21.90[1] mas/yr
Parallax (π) 13.58 ± 0.69[1] mas
Distance 240 ± 10 ly
(74 ± 4 pc)
Absolute magnitude (MV) 2.27 + 2.74[4]
Details
Luminosity 16.4[6] L
Temperature 7,246[6] K
Rotational velocity (v sin i) 222[7] km/s
Orbit
Period (P) 29.93[3] yr
Semi-major axis (a) 0.2[3]"
Eccentricity (e) 0.16[3]
Inclination (i) 148°
Longitude of the node (Ω) 29°
Periastron epoch (T) 1924.36
Other designations
BD+27° 2388, HD 127726, HIP 71094, HR 5433, SAO 83394.
Database references
SIMBAD data

HD 127726 is a binary star system in the northern constellation of Boötes.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752free to read, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data.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. 
  3. ^ a b c d Malkov, O. Yu.; et al. (2012), "Dynamical Masses of a Selected Sample of Orbital Binaries", Astronomy & Astrophysics, 546: 5, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774, A69 
  4. ^ a b Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal, 180: 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C 
  5. ^ Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick, eds., "The Revision of the General Catalogue of Radial Velocities", Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E 
  6. ^ 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:1208.2037free to read, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x 
  7. ^ 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/0610785free to read, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224 

External links[edit]