Other
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011dda....42.1001f&link_type=abstract
American Astronomical Society, DDA meeting #42, #10.01; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
Recent planetary missions have provided strong data sets for improvement in the estimation of orbits of the planets. VLBI observations of Mars-orbiting spacecraft have recently been adjusted to align with the ICRF2.0 somewhat improving the overall tie of the inner solar system to the ICRF. Ranging measurements to Mars-orbiting spacecraft and to Venus Express provide extremely accurate determinations of the shapes of the orbits of Venus, Earth, and Mars, and their relative orientation. The Mars ranging data allow reasonably accurate determinations of the mass parameters of over 20 asteroids through their effect on the orbit of Mars. Information from three encounters of the MESSENGER spacecraft have improved the orbit of Mercury somewhat, with better data expected after the spacecraft enters orbit about Mercury in March 2011. VLBA observations of the Cassini spacecraft at Saturn have the best internal consistency of any planetary observations, limited primarily by the radio source uncertainty in the ICRF. Ranging measurements to the Cassini spacecraft are also of interest but show correlations due to the way the spacecraft orbit is processed. The status of these and other recent observations will be described.
No associations
LandOfFree
Recent Observations and Development of the Planetary Ephemerides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Recent Observations and Development of the Planetary Ephemerides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recent Observations and Development of the Planetary Ephemerides will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-763836