Iota Antliae

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Iota Antliae
Diagram showing star positions and boundaries of the Antlia constellation and its surroundings
Cercle rouge 100%.svg

Location of ι Antliae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Antlia
Right ascension 10h 56m 43.05206s[1]
Declination –37° 08′ 15.9552″[1]
Apparent magnitude (V) +4.60[2]
Characteristics
Spectral type K1 III[3]
U−B color index +0.84[2]
B−V color index +1.03[2]
Astrometry
Radial velocity (Rv) –0.2[4] km/s
Proper motion (μ) RA: +76.14[1] mas/yr
Dec.: –124.43[1] mas/yr
Parallax (π) 17.16 ± 0.19[1] mas
Distance 190 ± 2 ly
(58.3 ± 0.6 pc)
Other designations
CD-36°6808, FK5 414, HD 94890, HIP 53502, HR 4273, SAO 201927.[5]

Iota Antliae (ι Ant, ι Antliae) is the Bayer designation for a star in the southern constellation of Antlia. It has an apparent visual magnitude of +4.60,[2] making it a faint naked eye star. From parallax measurements, the distance to this star can be estimated as 190 light-years (58 parsecs).[1] The spectrum of Iota Antliae matches a stellar classification of K1 III,[3] indicating that this is an evolved star that is now in its giant phase. It is a core helium fusing star that is classified as a member of the red clump evolutionary branch.[6]

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 d Johnson, H. L. et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99), Bibcode:1966CoLPL...4...99J. 
  3. ^ a b Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H. 
  4. ^ Wielen, R. et al. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, Bibcode:1999VeARI..35....1W. 
  5. ^ "iot Ant -- Star", SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-06-29. 
  6. ^ Kubiak, M. et al. (June 2002), "Metal Abundance of Red Clump Stars in Baade's Window", Acta Astronomica 52: 159–175, Bibcode:2002AcA....52..159K.