... All stars which have proper motions (in up to +45 ) were reduced to the epoch and equinox J2000, for the rest positions have the mean epoch of observations and equinox J2000. ...
... All positions of stars in the compiled catalogue are given: for stars chosen from UCAC3 by proper motions on epoch and equinox J2000.0, for another one on epoch of observation. ...
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Ссылки http://www.puldb.ru/nikolaev_2011/PUB_NIKOLAEV_2011/ers.pdf -- 834.1 Кб -- 05.01.2013 Похожие документы
... Distant outliers were eliminated from these data and corrections for the proper motion and precession were introduced into the values of the position angle to bring them to the epoch and equinox of 2000.0. ...
... each object: telescope, observing period, type of observations, type of coordinates (, or X, Y), reference catalog, epoch and equinox, origin (topocentric or heliocentric coordinates), rms errors, source of the ephemeris from which (OC) was calculated ...