Issue |
A&A
Volume 417, Number 3, April III 2004
|
|
---|---|---|
Page(s) | 1165 - 1171 | |
Section | Celestial mechanics and astrometry | |
DOI | https://doi.org/10.1051/0004-6361:20035663 | |
Published online | 26 March 2004 |
An approximation to the errors in the planetary ephemerides of the Astronomical Almanac
CalTech/Jet Propulsion Laboratory, 301-150, Pasadena, CA 91109, USA
Corresponding author: ems@smyles.jpl.nasa.gov
Received:
12
November
2003
Accepted:
13
January
2004
Errors in the planetary coordinates of the Astronomical Almanac are approximated by comparing their fundamental ephemerides, upon which they are based, with a more recent ephemeris. JPL's DE200 provided the fundamental planetary and lunar ephemerides of the Astronomical Almanac for the years, 1984–2002, and DE405 has replaced DE200 in that role, starting in 2003. Recently, new observational measurements have become available, thereby enabling further improvements in the ephemerides, and thus, a measure of the previous errors.
Key words: ephemerides
© ESO, 2004
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