The Heliocentric Osculating Orbital Elements referred to the mean ecliptic and equinox of date were removed from The Astronomical Almanac beginning with the 2008 edition. They are now available only on this website.

The orbital elements for the Earth refer to the Earth/Moon barycenter. The coordinates are in astronomical units. Linear interpolation of these orbital elements usually lead to errors of about 1 or 2 arcseconds in the geocentric positions of the Sun and planets. The errors may however reach about 7 arcseconds for Venus at inferior conjunction and about 3 arcseconds for Mars at opposition.

Starting with the 2013 edition, data for Pluto was moved from Section E to Section G due to the reclassification of Pluto as a dwarf planet. Therefore, heliocentric osculating orbital elements for Pluto only may be found here for 2013 and after. Files linked below still contain Pluto data for 2012 and before.