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{\bf EXTENSION OF THE FK5 COORDINATE SYSTEM
TO THE INFRARED FREQUENCY RANGE}
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{\it A.S. Kharin}

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{\it Main Astronomical Observatory Ukrainian National
Academy of Sciences,}
{\it 252650, Golosiiv, Kiev-022, Ukraine,}
{\it E-MAIL: MAOUAS@GLUK.APC.ORG}

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ABSTRACT. Appearance of infrared detectors and especially infrared 
arrays opens the practical possibility to determine the precise 
differential positions of stars, planets and an other objects in 
IR range immediately if correspondent IR reference catalogue  is    
created. An preliminary IR reference catalogues were  created 
already by identification of optical/IR counterparts and  in this  
way the dynamical FK5 coordinate system were extended to infrared
frequency range.

     The  experience  of  creating  of  first  step  of  such  IR
reference catalogue at Goloseevo is described. This  step  of  IR
coordinate system was created by using the FK5 itself, two infrared 
catalogues - CIO  D.Y.Gezari  and  IRAS  PSC and an photometric data.  
In results an analog of the FK5 in infrared was created. This last
catalogue may be used to conventional and probably  more  precise
differential meridian observations  in  near  infrared  range  if
special  IR  meridian  instruments  equipped  of    correspondent
special  IR  meridian  instruments  equipped  of    correspondent
infrared detectors be developed and manufactured.

     Possibilities  of  creating  and  practical  using  next  more
density steps of IR coordinate system to solving  an  astrometric
problems are discussed.

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