The symposium ADVANCING REFERENCE SYSTEMS, EPHEMERIS, AND STANDARDS, with the subtitle “From the Earth and the Moon to Solar System Bodies,” will focus on questions encompassing the elements required to describe both the position and motion of planetary bodies and the relationships between them, i.e., reference systems.
Thus, it is necessary to specify their ephemeris, reference frames, time scales, and orientation for a celestial reference frame, also to be determined. Such processes must be done consistently to derive parameters and procedures that conform to astronomical standards.
The outlined subjects constitute well-defined and scientifically relevant components in the heart of Fundamental Astronomy and are also the basis for many other fields of astronomy and astrophysics, such as the reduction of observed raw data; the physical study of the Sun, planets, satellites, or asteroids; space missions of diverse nature, etc. Furthermore, how they impact technological applications and serve societal requests by supporting navigation around the Earth and in space; monitoring global change; contributing to time transfer; etc.
Key Topics
The symposium is structured in six key topics (see program outline):
- Earth rotation models and Earth Orientation Parameters (EOP)
- Celestial and terrestrial reference systems/frames
- Reference systems/frames for the Moon and other solar system bodies
- Time scales and time metrology
- Ephemerides of solar system objects
- Astronomical standards
