Astrometric detection feasibility of gravitational effects of quantum vacuum

This work analyzes in some detail the feasibility of testing with astrometric measurements the hypothesis that Quantum Vacuum can have gravitational effects, as suggested in a series of recent papers ([3, 6, 5]). In particular, the possibility of detecting an excess shift of the longitude of the pericenter in the orbit of the trans-neptunian system UX25 and its satellite is investigated. The excess shift which might be experimented by the orbit of the satellite was estimated, under reasonable working hypothesis, to be about 0:23 arcsec per orbit. Several observing scenarios are explored here, including those using conventional and adaptive optics telescopes from ground, and some spaceborne telescopes.