APDB is made from 3 astrometric data bases of JPL, IMC-BDL and USNO, under the auspices of the IAU commission 4. These laboratories gather astrometric data on planets in order to build the database APDB and to use these data for the building of ephemerides. You will find below a direct access to the entier data set per planet, type of observation and instrument and to planetary ephemerides sites, JPL Horizon Home Page, IMC-BDL Ephemerides Home Page and USNO Web Mica . The origin of the data, the type of data, the instruments used and the sites of observation regarding the dates are available in the APDB time maps for inner and outer planets. If you have some observations of planets, you can send them to fienga@imcce.fr. Please, use the APDB format We will put them on sites under the 'NEWS 2001' label. MERCURY: 1774-1997 VENUS: 1774-1997 MARS: 1800-1970 JUPITER: 1775-1983 SATURN: 1775-1983 URANUS: 1753-1995 NEPTUNE: 1846-1995 PLUTO: 1914-1999

APDB Time Maps Inner Planets Map Outer Planets Map JPL Planetary Ephemeris Data IMC-BDL Astrometric Planetary Data Base USNO Site IMC-BDL Ephemerides Home Page JPL Horizon Home Page USNO Web Mica Bibliography NEWS 2001 ! MERCURY MARS SATURN NEPTUNE VENUS JUPITER URANUS PLUTO

• Agnes Fienga; IMC - Bureau des longitudes; Paris, France (fienga@imcce.fr)
• E.Myles Standish; Jet propulsion Laboratory; Pasadena, CA; USA (ems@smyles.jpl.nasa.gov)
• James L Hilton; US Naval Observatory; Washington, DC; USA (jhilton@usno.navy.mil)
• John F Chandler; Center for Astrophysics; Cambridge, MA; US A (chandler@cfa.harvard.edu)

http://www.imcce.fr/APDB.html Last update : 2000 june