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AL-IOTH

Magnitude  1.76
Spectral Type  A0pCr
Parallax (milliarcseconds)  40.30  +/-0.62
Distance (parsecs)  24.81  +/-0.40
Distance (light years)  80.93  +/-1.00 2
Right Ascension  12h 54m 1.63s
Declination  +55o 57' 35.4"


"UMa AL-IOTH, one of the ridiculously corrupt forms of al-'Ayyuq, the ancient Arabic name of Capella. This is just another example of how star names are wont to wander at the hands of the uninformed. Scaliger's derivation is not accepted. The Arabic names for this star were al-Juan, 'the Black Horse or Camel', and al-Hawar (or al-Hawwar), 'the extremely bright one', an appropriate name for the brightest star in the constellation." 3


  1. Table Data: ESA, 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200; pp 1264-1265, Hipparcos Catalog (HIP) No. 62956
  2. Listed as 49 Light Years in A Field Guide To The Stars and Planets, by Donald H. Menzel, Houghton Mifflin, 1964, 63-7017; rev. ed. 1998 by Jay M. Pasachoff lists no distance information.
  3. "Pronunciations, Derivations, and Meanings of a Selected List of Star Names", Popular Astronomy, January 1944, by George A. Davis jr.