Iota Telescopii

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Iota Telescopii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 19h 35m 12.98725s[1]
Declination −48° 05′ 57.1241″[1]
Apparent magnitude (V) +4.89[2]
Spectral type K0 III[3]
B−V color index +1.09[2]
Radial velocity (Rv)+22.3[4] km/s
Proper motion (μ) RA: −7.51[1] mas/yr
Dec.: −37.19[1] mas/yr
Parallax (π)8.80 ± 0.32[1] mas
Distance370 ± 10 ly
(114 ± 4 pc)
Absolute magnitude (MV)−0.39[5]
Luminosity164[6] L
Temperature4,854[6] K
Other designations
ι Tel, CD−48° 13161, FK5 735, HD 184127, HIP 96341, HR 7424, SAO 229751[7]
Database references

Iota Telescopii (ι Telescopii) is a solitary,[8] orange-hued star in the southern constellation of Telescopium. It is a K-type giant star of spectral type K0 III[3] with an apparent magnitude of +4.89.[2] Around 164 times as luminous as the Sun,[6] it is approximately 370 light years from Earth.


  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 c Cousins, A. W. J.; et al. (1966), "Photoelectric magnitudes and colours of southern stars, II", Royal Observatory bulletins, 121, Bibcode:1966RGOB..121....1C.
  3. ^ a b Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, Ann Arbor: Dept. of Astronomy, University of Michigan,
  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. ^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  6. ^ a b c 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.
  7. ^ "iot Tel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-05.
  8. ^ 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.