****************************************************************************** dorismail 28-Sep-2020 13:21:49 Message No 1242 ****************************************************************************** Author: Heike Peter Subject: COSPAR 2021, 43rd Scientific Assembly goes Hybrid - Panel on COSPAR 2021 HYBRID, 43rd Scientific Assembly 28 January - 4 February 2021, Sydney, Australia https://www.cospar-assembly.org http://www.cospar2020.org Dear colleagues The 43rd COSPAR Scientific Assembly (28 January - 4 February 2021) is going Hybrid and the call for abstracts have reopened until 5 October 2020. In addition to the already existing program new abstracts can be submitted. More information about how the Hybrid Assembly will work may be found at http://www.cospar2020.org/abstracts.php In particular, we would like to draw the attention to a session, organized by the COSPAR Panel on Satellite Dynamics together with sub-Commission B2 “International Coordination of Space Techniques for Geodesy” (identical to IAG Commission 1 on Reference Frames). The title of the session is "Satellite Dynamics - new Developments and Challenges for Earth and Solar System Sciences". The aim of the Panel on Satellite Dynamics is to support activities related to the detailed description of the motion of artificial celestial bodies. This goal should be achieved by improving the current theories of motion and by evaluating their determining forces in a more sophisticated way. Detailed theoretical understanding of the dynamics of satellites should coincide with the results of precise tracking in order to obtain the most precise knowledge possible of the orbit and the corresponding orbital positions. The scope of the Panel on Satellite Dynamics entails the positioning of a wide range of objects in space, including Earth orbiting satellites for Earth observation such as GRACE-FO, Swarm, Jason-3, and the Copernicus Sentinels, and navigation satellite systems such as GPS, GLONASS, Galileo, Beidou, QZSS or tracking systems such as SLR and DORIS. In addition, positioning plays an important role in the success of the continuously growing number of today's and tomorrow’s missions to explore the Solar System. Recent and future missions have to deal with complex trajectories and innovative propulsion and breaking techniques to visit multiple bodies (e.g., Cassini, Dawn, JUICE), small unconventional bodies (e.g., Rosetta, OSIRIS-REx, Lucy), and harsh and unknown environmental conditions challenging our technical capabilities (e.g., Messenger, Venus Express, BepiColombo, JUNO). Both advances in the modeling of spacecraft dynamics and the theoretical understanding of space observables (e.g., range, Doppler, VLBI, optical) are required to allow for a more efficient exploration and a deeper understanding of our Solar System. Limiting errors in Precise Orbit Determination (solar radiation pressure, time variable gravity fields, phase center corrections, attitude variations, etc...) are of critical interest for many stakeholders. Moreover, formations of satellites are being realized and proposed for Earth observation and fundamental sciences, that impose very severe constraints on (relative) positioning and orbit and attitude control solutions (e.g. micro-propulsion). Mini-satellites and cubesats also represent a new frontier for both Earth and planetary exploration, posing new challenges as well as new opportunities. Satellite orbit determination requires the availability of tracking systems, well established reference frames and accurate station coordinate solutions, detailed force and satellite models, and high-precision time and frequency standards. Contributions covering all recent developments and plans in ground, satellite or probe positioning and navigation are solicited as well as contributions on current progress on establishment, maintenance and improvement of reference systems in Geosciences. Important dates: 5 October 2020: Abstract submission deadline 30 November 2020: Deadline to register at "presenter early bird rate" (if pre-recorded talk has already been uploaded) 31 December 2020: Deadline to register at standard early bird rate Heike Peter, Adrian Jäggi Convenors of the Satellite Dynamic Panel/B2 session -- ---------------------------------------------- Dr. Heike Peter Senior Consultant PosiTim UG Germany Tel.: +49 2255 9239616 Fax: +49 2255 9239615 Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr