JPL Horizons On-Line Ephemeris System

JPL Horizons On-Line Ephemeris System provides easy access to key solar system data and flexible production of highly accurate ephemerides for solar system objects.

Osculating elements at a given epoch are always an approximation to an object's orbit (i.e. an unperturbed conic orbit or a "two-body" orbit). The real orbit (or the best approximation to such) considers perturbations by all planets, a few of the larger asteroids, a few other physical usually small forces, and requires numerical integration.

JPL ephemerides do not use things such as periods, eccentricities, etc.

Introduction

There are 3 ways to use the system:

• WWW
• Email
• Telnet

See also

• Jet Propulsion Laboratory

References

External links

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