EPM (Ephemeris of Planets and the Moon) include high-precision ephemeris of the Sun, the Moon, eight major planets, Pluto, five asteroids (Ceres, Pallas, Vesta, Iris, Bamberga) and 4 TNO (Eris, Haumea, Makemake, Sedna), as well as TT-TDB and Euler angles for lunar physical libration.

EPM cover a time span of more than 400 years (1787–2214).

The most recent version of EPM is EPM2021. Together with EPM2021, a “long” version EPM2021H (“H” stands for “Holocene”) has been released. EPM2021H is similar to EPM2021, but covers a time span of more than 30000 years (13199 BC — AD 17191).

The previous versions of EPM were EPM2017 and EPM2015.

Descriptions of earlier EPM versions are available on the IAA RAS FTP server: EPM2011/m, EPM2008, EPM2004.


Download EPM2021

While IAA binary and ASCII formats, originally used for EPM, are still supported, users are encouraged to use the SPK and PCK formats, also known as the SPICE formats.

Download EPM2021H

Long version of EPM2021 (13199 BC — AD 17191).

All EPM versions

FTP directory containing EPM2004, EPM2008, EPM2011m, EPM2015, EPM2017, EPM2017H, EPM2021, and EPM2021H.

EPM User Manual

List of software to access the EPM ephemeris in SPICE and other formats.

Online Ephemeris Service

Interactive web tool for obtaining ephemeris tables according to various EPM versions.