Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-12T08:44:14.736Z Has data issue: false hasContentIssue false
  • English
  • Français

Computation of Compilation Catalogs

Published online by Cambridge University Press:  04 August 2017

Thomas E. Corbin
Thomas E. Corbin*
Affiliation:
U.S. Naval Observatory, Washington D.C.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Currently the computation of mean positions and proper motions for the International Reference Stars (IRS) is hampered by large variations in the observational histories of the stars and lack of overlap between the magnitudes of the IRS and of the FK4. The poorest IRS observational histories are +60° to +80° in the north and −40° to −80° in the south. The much-needed extension of the fundamental system to the ninth magnitude will be made in the FK5. The Faint Fundamental Extension is currently being selected at the U. S. Naval Observatory. A proposed list of 1030 Faint Fundamental stars has been prepared for the Northern Hemisphere, and work has begun on the selection in the Southern Hemisphere.

Type
I. Reduction Technique
Information
Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 75 - 86
Copyright
Copyright © Reidel 1986 

References

1. Brosche, P., Nowacki, H. and Strobel, W.: 1964, Systematic Differences FK4-GC and FK4-N30 for 1950.0, Veroff. Astron. Rechen Inst. Hiedelberg, 15.Google Scholar
2. Corbin, T.: 1977, The Proper Motion System of the AGK3R, University Microfilms, Ann Arbor.Google Scholar
3. Bien, R., Fricke, W., Lederle, T. and Schwan, H.: 1978, Methods for the Comparison of Systems of Star Positions to be Applied in the Construction of the FK5, Veroff. Astron. Rechen Inst. Heidelberg, 29.Google Scholar
4. Scott, F.P.: 1962, Astron. J. 67, 690.Google Scholar
5. Kopff, A.: 1954, Supplement-Katalog des FK3 (FK3Supp), Astron.-Geod. Jahrbuch 1954, Astron. Rechen Institut, Heidelberg.Google Scholar
6. Fricke, W.: 1974, in New Problems in Astrometry, Gliese, , Murray, and Tucker, (Eds.), IAU Symp. No. 61, D. Reidel, Dordrecht-Holland, p. 23.Google Scholar
7. Corbin, T.: 1978, in Modern Astrometry, Prochazka, and Tucker, (Eds.), IAU Coll. No. 48, University Observatory, Vienna- Austria.Google Scholar