USNO CCD Astrograph Catalog
The USNO CCD Astrograph Catalog (UCAC) is an astrometric star catalog of the United States Naval Observatory.
Alternative names | UCAC |
---|---|
Survey type | star catalogue |
Published | October 2000 |
UCAC-1
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
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
The third edition was published in the IAU General Assembly in Rio (August 2009).
UCAC-4
The fourth edition was published in August 2012.
Since Spring 2015, the successor URAT is available.
UCAC-5
The fifth edition was published in February 2017.[1][2]
gollark: No.
gollark: Not VERY techy, but I guess more so than, say, developing countries.
gollark: And yet you have computers.
gollark: Except the 23rd century. Take it from me, you do NOT want to be in that.
gollark: You know what they say, 20th century bad.
References
- "UCAC5 - nowy katalog pozycji i ruchów własnych gwiazd" (in Polish). 2017-03-29.
- UCAC5: New Proper Motions using Gaia DR1
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