HD 157753

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 157753
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 17h 27m 57.60196s[1]
Declination −52° 17′ 49.8161″[1]
Apparent magnitude (V) 5.75[2]
Characteristics
Spectral type K2III[3]
B−V color index +1.17[2]
Astrometry
Radial velocity (Rv) −8.70[4] km/s
Proper motion (μ) RA: −14.50[1] mas/yr
Dec.: −58.43[1] mas/yr
Parallax (π) 9.12 ± 0.53[1] mas
Distance 360 ± 20 ly
(110 ± 6 pc)
Details
Luminosity 81[5] L
Temperature 4,564[5] K
Other designations
FK5 3386, HD 157753, HIP 85470, HR 6483, SAO 244763.
Database references
SIMBAD data

HD 157753 is giant star in the southern constellation of Ara. It may be an astrometric binary,[6] and it has a faint, magnitude 13 companion at an angular separation of 31.5″ along a position angle of 356° (as of 2000).[7]

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:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa 27: 11, Bibcode:1968MNSSA..27...11C 
  3. ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H 
  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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ 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 
  6. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. 
  7. ^ Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22 

External links[edit]