X2 – Cross-Division A-F Commission Solar System Ephemerides

Description

Solar System Ephemerides are developed for the Sun, Moon, planets, planetary satellites, asteroids and comets to support a broad range of scientific purposes. Since most observations of other bodies are made from Earth, precise knowledge of the orbit of the Earth is used for the reduction of many, if not most, astronomical observations. Accurate ephemerides of the Moon, planets, and planetary satellites are used in the planning and operation of interplanetary spacecraft missions. Ephemerides of the asteroid are used for evaluation of the origin of the solar system, for assessment of possible Earth impact events, and for many other purposes. Rotational elements for these bodies are closely associated with their ephemerides and are often used in data reduction.

The main objectives of the present commission are to promote the acquisition and dissemination of observations of solar system bodies and estimates of their ephemerides and rotational elements. New activities for the current triennium are hints of larger bodies on the Kuiper belt that may exist and correlate the orbits of the main belt and very distant objects. A symposium to discuss recent developments will be proposed.

Commission Web Page

Commission Members (102)

Under Division

Division A Fundamental Astronomy
Division F Planetary Systems and Astrobiology

President

Fabrizio Bernardi

SpaceDyS s.r.l.
Via Mario Giuntini 63
56023 Navacchio di Cascina
Italy

NCA adherence: Italy

Last updated:
January 18, 2022

Vice-President

Ryan S Park

Jet Propulsion Laboratory
4800 Oak Grove Drive
M/S: 301-121
Pasadena 91109
California (CA)
United States

NCA adherence: United States

Last updated:
October 6, 2021

Secretary

Davide Farnocchia

Jet Propulsion Laboratory, California Institute of Technology
4800 Oak Grove Drive
Pasadena 91109
California (CA)
United States

NCA adherence: United States

Last updated:
September 27, 2021

Organizing Committee