The U.S. Naval Observatory
- Eclipses of Sun and Moon
- Solar Data
- Major Planetary Data
- Planetary Satellite Data
- Minor Planet Ephemerides
- Stars and Stellar Systems Tables
- Observatory List
- Explanatory Section
- Glossary
H.M. Nautical Almanac Office
- Phenomena
- Time Scales and Coordinate Systems
- Lunar Data
- Short Period Planetary Satellite Theories
- Minor Planet Data
- Tables of Dates and Constants
The Jet Propulsion Laboratory (JPL), California Institute of Technology
- Planetary and Lunar Ephemerides DE405/LE405
The IAU Standards of Fundamental Astronomy (SOFA) initiative
- Software implementation of fundamental quantities used in sections A, B, D, and G
Service de Calculs, Bureau des Longitudes
- Ephemerides of Satellites of I-IV of Jupiter (Section F)
International Earth Rotation and Reference Systems Service
- Radio Source Positions (Section H)
The Institute for Theoretical Astrophysics, Oslo, Norway
- Galilean Satellites Eclipsing and Occulting Pairs (Section F)
IAU Commission 30, Working Group for Radial Velocity Standard Stars
- Standard Radial Velocity Stars (Section H)
The American Association of Variable Star Observers (AAVSO)
- Variable Stars (Section H)
European Southern Observatory (ESO)
- Spectrophotometric Standard Stars (Section H)