Scientific objectives and selection of targets for the SMART-1 Infrared Spectrometer (SIR)

摘要: Abstract The European SMART-1 mission to the Moon, primarily a testbed for innovative technologies, was launched in September 2003 and will reach Moon 2005. On board are several scientific instruments, including point-spectrometer Infrared Spectrometer (SIR). Taking into account capabilities of SIR instrument particular, as well open questions lunar science, selection targets observations has been compiled. can address at least five topics: (1) Surface/regolith processes; (2) Lunar volcanism; (3) crust structure; (4) Search spectral signatures ices poles; (5) Ground truth study geometric effects on shape. For each topic we discuss specific observation modes, necessary achieve our goals. majority be observed nadir-tracking mode. More than 100 targets, which require off-nadir pointing tracking, planned. It is expected that results significantly increase understanding Moon. Since exact arrival date orbital parameters spacecraft not known yet, more detailed planning follow near future.