Acronyms
U
Up [position/coordinate/direction]
U, U.
University
UAW
[GGOS/IERS] Unified Analysis Workshop
UBAD
USNO Bright-Star Astrometric Database
UCAC
USNO CCD Astrograph Catalog
UCLA
University of California, Los Angeles
UCSD
University of California, San Diego
UEZO/RJ
Centro Universitário Estadual da Zona Oeste, Rio de Janeiro
UFRJ
Universidade Federal do Rio de Janeiro
UH
University of Hawaii
UK, U.K.
United Kingdom
UKIDSS
UKIRT Infrared Deep Sky Survey
UKMO
Met Office (formerly: UK Meteorological Office)
ULR
University of La Rochelle, France
ULUX
Utsteinen LUXemburg [Luxemburg station in Antarctica]
UNB
University of New Brunswick
UNESCO
United Nations Educational, Scientific and Cultural Organization
Uni, Univ.
University
unWISE
unofficial, unblurred coadds of the WISE imaging
UPAD
Universita di Padova and Telespazio S.P.A.
UPC
URAT Parallax Catalog
URAT
USNO Robotic Astrometric Telescope
URL
Uniform Resource Locator
URSI
Union Radio-Scientifique Internationale / International Union of Radio Science
US, U.S.
United States [of America]
USA
United States of America
USN
= USNO
USO
Ultra Stable Oscillator
USU
USNO Ultra Rapid orbits
UT
= UTexas
UT, UT0, UT1, UT2
UTA
University of Texas at Austin
UTAAM
NCEP [or NOAA] AAM analysis and forecast data
UTCSR
= CSR at UTexas
UTexas
UTGPS
Universal Time-like quantity using Global Position System
UTXMO
UZ
Uzbekistan
