CelesTrak
TLE Data
Current
Supplemental
Historical: 1980-2004
Special Data Request
Documentation
Satellite Catalog
Search SATCAT
SATCAT Boxscore
Orbit Visualization
SOCRATES
Space Data
GPS
Earth Orientation
Space Weather
Library
Columns
Papers
Software
GPS Yuma Almanacs
Latest Yuma Almanac
Definition of a Yuma Almanac
GPS Yuma Almanacs
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Latest
Status Messages
NANUs
SEM Almanacs
Yuma Almanacs