Planetary Ephemeris Data

The creation of modern ephemerides involves the fitting to a wide variety of astronomical measurements (observations).
This website presents the sets of observations that are currently being used in creation and improvement of modern planetary and lunar ephemerides.

This page is currently maintained by

William Folkner; JPL/Caltech; Pasadena, CA; USA Contact: (william.folkner@jpl.nasa.gov)

Present Home Page for the IAU Commission 4 (Ephemerides) : "http://iaucom4.org/ephemerides.html"

Meridian Circle Timings (Transits)

Bordeaux, 1985-96
RGO, Herstmonceux,1957-82
RGO, La Palma, 1984-98
Tokyo, 1986-88
USNO 6", 1913-76
USNO 6", 1977-82
USNO 6", 1986-93
USNO 9", 1913-25, 1935-45

Format References

Photographic Astrometry of outer planets and satellites

Nikolaev misc. observatories Format References

Photographic Astrometry of Pluto

1914-1969 1969-1988 1989-1995 Format References

CCD Astrometry of the Outer Planets and Satellites

USNO, Flagstaff Bordeaux Table Mountain McDonald misc. obs'ns

Format References

Astrolabe Observations

Mars Jupiter Saturn Uranus Format References

Radar Ranging

from Eupatoria, Crimea

Mercury, 1980-95; Venus, 1962-95; Mars, 1971-95

from Goldstone, California

Mercury, 1967-97 Venus, 1967-90 Format References

Mars, 1971-94 Format References

Mercury Closure, 1989-97

Spacecraft encounter estimates

Right ascension, declination and range estimates
from spacecraft encounters with tracking data
(Doppler, range, and VLBI) re-reduced in ICRF frame.

Spacecraft 3-D Observations Format

Spacecraft VLBI

Magellan, Venus Express at Venus
Phobos, Mars Global Surveyor, Odyssey, Mars Reconnaisance Orbiter at Mars
Galileo at Jupiter

Single Baseline VLBI Observations Format References

VLBA Observations of Cassini spacecraft at Saturn Reference

Venus Spacecraft Doppler

Magellan Doppler

Mars Spacecraft Ranging

Mariner 9

Viking Lander

Mars Pathfinder

Mars Global Surveyor

Odyssey (2002-2011)

MRO (2006-2011)

Mars Spacecraft Doppler (Differenced Range)

Viking Lander Pathfinder Lander Format

References

References

DSN Station Locations

DSN Coordinates

Lunar Laser Ranging

Lunar Laser Ranging and Satellite Laser Ranging Data

Contact: Webmaster (william.folkner@jpl.nasa.gov)