Contributors

Several organizations contribute material to the printed version of The Astronomical Almanac. Individuals also contribute to the book by supplying data for tables of astronomical sources.
 

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 DE430/LE430

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)

IERS ICRS Center

  • Radio Source Positions (Section H)

The Institute for Theoretical Astrophysics, Oslo, Norway

  • Galilean Satellites Eclipsing and Occulting Pairs (Section F)

The American Association of Variable Star Observers (AAVSO)

  • Variable Stars (Section H)

European Southern Observatory (ESO)

  • Spectrophotometric Standard Stars (Section H)

VLBI Analysis Center at Pulkovo Observatory

  • Radio Source Optical Characteristics (Section H)

California Planet Survey: Exoplanets.org

  • Exoplanets and Host Stars (Section H)

Individual Contributors »

The Astronomical Almanac Online! 2020