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The USNO CCD Astrograph Catalog (UCAC) is an astrometric star catalog of the United States Naval Observatory.
| Alternative names | UCAC |
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UCAC-1 edit
The first preliminary edition, published in March 2000, gives the positions and proper motions of over 27 million stars in the southern hemisphere in the brightness range 8–16.
UCAC-2 edit
The second issue was the IAU published General Assembly in Sydney (2003) and includes positions and proper motions of about 50 million stars.
UCAC-3 edit
The third edition was published in the IAU General Assembly in Rio (August 2009).
UCAC-4 edit
The fourth edition was published in August 2012.
Since Spring 2015, the successor URAT is available.
UCAC-5 edit
References edit
- ^ "UCAC5 - nowy katalog pozycji i ruchów własnych gwiazd" (in Polish). 2017-03-29.
- ^ UCAC5: New Proper Motions using Gaia DR1
External links edit
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