HD 151967

HD 151967 is suspected variable star in the southern constellation of Ara. It is a sixth magnitude star,[2] which means it is just visible to the naked eye in dark skies. Parallax measurements place it at a distance of approximately 710 light years from the Earth.[1]

HD 151967
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 16h 54m 00.36029s[1]
Declination −57° 54′ 34.2317″[1]
Apparent magnitude (V) 5.92[2]
Characteristics
Spectral type M1III[3]
U−B color index +1.92[2]
B−V color index +1.60[2]
Variable type Suspected
Astrometry
Radial velocity (Rv)-40.7[4] km/s
Proper motion (μ) RA: -40.18[1] mas/yr
Dec.: -123.26[1] mas/yr
Parallax (π)4.60 ± 0.47[1] mas
Distanceapprox. 710 ly
(approx. 220 pc)
Details
Radius53[5] R☉
Luminosity637[6] L☉
Temperature3,839[6] K
Other designations
CPD−57° 8157, HD 151967, HR 6251, HIP 82672, SAO 244245.
Database references
SIMBADdata

This is a red giant with a stellar classification of M1III;[3] it has expanded to 53[5] times the radius of the Sun and radiates 637[6] times the Sun's luminosity. The star varies in brightness by an amplitude of 0.0156 in magnitude over a period of 26 days.[7] The effective temperature of the outer atmosphere is 3,839 K,[6] giving it the ruddy hue of an M-type star.[8]

References
  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.
  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 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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.
  3. Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. 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.
  5. Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
  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.
  7. Koen, Chris; Eyer, Laurent (March 2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society, 331 (1): 45–59, arXiv:astro-ph/0112194, Bibcode:2002MNRAS.331...45K, doi:10.1046/j.1365-8711.2002.05150.x, S2CID 10505995.
  8. "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 10, 2012, retrieved 2015-08-25.


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