Optical positions of radiostars. III.
Bibcode: 1991A&AS...89..411C
Costa, E.; Loyola, P.
Chile
Abstract
Precise optical positions, relative to either the Perth 70 or the AGK3R catalog have been obtained for 44 radiostars proposed to the Hipparcos observing list. Precision levels between 0.17 and 0.28 arcsec were obtained.
1991
•
Astronomy and Astrophysics Supplement Series
Hipparcos
2