HD 127726

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
Distance240 ± 10 ly
(74 ± 4 pc)
Absolute magnitude (MV)2.27 + 2.74[4]
Details
Luminosity16.4[6] L
Temperature7,246[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
SIMBADdata

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

References

  1. 1 2 3 4 5 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. 1 2 3 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data.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. 1 2 3 4 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. 1 2 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. 1 2 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:1208.2037Freely accessible, 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/0610785Freely accessible, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224


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