NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-20 T20:05:42 PDT
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For refcode 1996A&AS..120..201L:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1996A&AS..120..201L A compiled catalogue of optical positions of extragalactic radio sources. Li, J., Jin, W. Shanghai Observatory, Shanghai 200030, China Received January 2; accepted April 15, 1996 Abstract. Based on 28 individual catalogues, in which the positions of optical counterparts of extragalactic radio sources are listed, we compiled a combined catalogue by means of a weighted least squares adjustment. The catalogue is in the system of FK5/J2000.0. It consists of about five hundred sources, among which there are 56 primary sources with position uncertainties as 0.09". Comparisons show that the orientation differences between optical and radio frames are A1=-0.013"+/-0.012", A2=0.077"+/-0.012", A3=0.005" +/-0.009". Local relative deformations are not obvious within the precision of ground-based optical observations. Keywords: astrometry - reference frames - catalogues - radio continuum: galaxies
Retrieve 495 NED objects in this reference.
Please click here for ADS abstract

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