Improved Astrometric Calibration Regions along the Celestial Equator

Details Improved Astrometric Calibration Regions along the Celestial Equator Improved Astrometric Calibration Regions along the Celestial Equator

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aj....118.2488s&link_type=abstract

The Astronomical Journal, Volume 118, Issue 5, pp. 2488-2502.

Astronomy and Astrophysics

Astronomy

34

Astrometry, Stars: General

Scientific paper

We present improved and highly accurate International Celestial Reference System (ICRS) equatorial positions for 1,268,732 stars in 16 astrometric calibration regions located around the celestial equator. Each region is about 7.6dx3.2d in area (~24.3 deg2), contains a large number of stars (18,767 to 263,810), has stellar densities ranging from 765 to 10,772 stars deg-2, covers a wide range in magnitude (9.5

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