The NPM and SPM Contributions to the HIPPARCOS Proper-Motion Link

Details The NPM and SPM Contributions to the HIPPARCOS Proper-Motion Link The NPM and SPM Contributions to the HIPPARCOS Proper-Motion Link

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..153p&link_type=abstract

Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 153-156

Computer Science

2

Scientific paper

We describe the use of the Lick Northern Proper Motion (NPM) program and its southern-sky complement, the Yale/San Juan Southern Proper Motion (SPM) program to determine the Hipparcos proper-motion link to the extragalactic reference system defined by galaxies. Particular attention is given to the presence of systematic errors in the NPM and SPM proper motions which bias the spin solutions.

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