USNO-A2.0
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Publication
1998 - U.S. Naval Observatory, Flagstaff, AZ, Arizona
Language
English
Word Count
2,750 words, Guess
Page Count
11 pages
Physical Format
[computer file] /
Identifiers
- Open LibraryOL61342426M
- OCLC Control Number40511017
Alternate Titles
- USNO-A V2.0 :
- USNO-A V2.0
- U.S. Naval Observatory A-2.0 catalog
Description
A catalog of 526,280,881 stars, based on a re-reduction of the Precision Measuring Machine (PMM) scans that were the basis for the USNO-A1.0 catalog. A2.0 uses the ICRF as realized by the USNO ACT catalog, and presents right ascension and declination (J2000, epoch of the mean of the blue and red plate) and the blue and red magnitude for each star.
Subjects
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