HD 155035

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HD 155035
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 17h 11m 38.68225s[1]
Declination –48° 52′ 24.2305″[1]
Apparent magnitude (V) 5.92[2]
Characteristics
Spectral type M1.5 III[3]
U−B color index +1.85[4]
B−V color index +1.82[2]
Variable type Irregular variable
Astrometry
Proper motion (μ) RA: 8.42[1] mas/yr
Dec.: –3.71[1] mas/yr
Parallax (π) 2.93 ± 0.43[1] mas
Distance approx. 1,100 ly
(approx. 340 pc)
Other designations
CD–48 11492, HD 155035, HIP 84105, HR 6374, SAO 227699, V854 Arae.[4]

HD 155035 is the Henry Draper Catalogue designation for a star in the constellation Ara, the Altar. It is located at a distance of approximately 1,100 light-years (340 parsecs)[1] from Earth and has an apparent visual magnitude of 5.92,[2] making it is faintly visible to the naked eye. This is a red giant star with a stellar classification of M1.5 III.[3] It an irregular variable that changes brightness over an amplitude range of 0.12 magnitudes.[5]

References[edit]

  1. ^ a b c d e f 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. 
  2. ^ a b c 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. ^ a b 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. ^ a b "V854 Ara -- Pulsating variable Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-03. 
  5. ^ Adelman, S. J. (October 2000), "On the Variability of K5-M Stars", Information Bulletin on Variable Stars 4959 (1), Bibcode:2000IBVS.4959....1A. 

External links[edit]