103 Aquarii

From Wikipedia, the free encyclopedia
Jump to: navigation, search
103 Aquarii
Observation data
Epoch J2000.0 (ICRS)      Equinox J2000.0 (ICRS)
Constellation Aquarius
Right ascension 23h 41m 34.48853s[1]
Declination −18° 01′ 37.4731″[1]
Apparent magnitude (V) 5.34[2]
Characteristics
Spectral type K4/K5 III[3]
B−V color index +1.57[2]
Astrometry
Radial velocity (Rv) +25.1[4] km/s
Proper motion (μ) RA: –41.25[1] mas/yr
Dec.: –71.85[1] mas/yr
Parallax (π) 4.31 ± 0.31[1] mas
Distance 760 ± 50 ly
(230 ± 20 pc)
Details
Surface gravity (log g) 1.59[5] cgs
Temperature 3,910[5] K
Metallicity [Fe/H] –0.18[5] dex
Other designations
103 Aqr, A1 Aquarii,[6] BD−18 6357, HD 222547, HIP 116889, HR 8980, SAO 165834.[7]

103 Aquarii is the Flamsteed designation for a star in the equatorial constellation of Aquarius. It is faint but visible to the naked eye with an apparent visual magnitude of 5.34.[2] Based upon an annual parallax shift of 4.31 milliarcseconds, the distance to this star is around 760 light-years (230 parsecs).[1] This is classified as an evolved K-type giant star.[3]

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 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H. 
  4. ^ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W. 
  5. ^ a b c McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants". Astrophysical Journal Supplement Series 74: 1075–1128. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527 (inactive 2013-04-05). 
  6. ^ HD 222547, database record, HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index, N. D. Kostjuk, Institute of Astronomy of Russian Academy of Sciences, 2002; CDS ID IV/27A.
  7. ^ 103 Aqr -- Star, SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-16 

External links[edit]