USNO CCD Astrograph Catalog
 | This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)
|
| Alternative names | UCAC |
|---|---|
The USNO CCD Astrograph Catalog (UCAC) is an astrometric star catalog of the United States Naval Observatory.
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]
The fifth edition was published in February 2017.[1][2]
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]
 | This astronomical catalog article is a stub. You can help Wikipedia by expanding it. |