{'fraction_non_alphanumeric': 0.02490421455938697, 'fraction_numerical': 0.0019157088122605363, 'mean_word_length': 5.295180722891566, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Spacecraft design impacts on the post-Newtonian parameter estimation

The ESA mission BepiColombo, reaching out to explore the elusive planet Mercury, features unprecedented tracking techniques. The highly precise orbit determination around Mercury is a compelling opportunity for a modern test of General Relativity (GR). Using the software tool GRETCHEN incorporating the Square Root Information Filter (SRIF), MPO's orbit is simulated and the post-Newtonian parameters (PNP) are estimated. In this work, the influence of a specific constraint of the Mercury Orbiter Radio science Experiment (MORE) on the achievable accuracy of the PNP estimates is investigated. The power system design of the spacecraft requires that ±35° around perihelion the Ka transponder needs to be switched off, thus radiometric data is only gathered via X band. This analysis shows the impact of this constraint on the achievable accuracy of PNP estimates. On a bigger scale, if GR shows some violation at a detectable level it inevitably leads to its invalidation.