Efficiency of a wide-area survey in achieving short- and long-term warning for small impactors |
| |
| Authors: | Davide Farnocchia Fabrizio Bernardi Giovanni B Valsecchi |
| |
| Institution: | 1. Department of Mathematics, University of Pisa, Largo Pontecorvo 5, 56127 Pisa, Italy;2. SpaceDyS, Via Mario Giuntini 63, Cascina, 56023 Pisa, Italy;3. IAPS, INAF, Via Fosso del Cavaliere 100, Tor Vergata, 00133 Roma, Italy |
| |
| Abstract: | We consider a network of telescopes capable of scanning all the observable sky each night and targeting Near-Earth objects (NEOs) in the size range of the Tunguska-like asteroids, from 160 m down to 10 m. We measure the performance of this telescope network in terms of the time needed to discover at least 50% of the impactors in the considered population with a warning time large enough to undertake proper mitigation actions. The warning times are described by a trimodal distribution and the telescope network has a 50% probability of discovering an impactor of the Tunguska class with at least one week of advance already in the first 10 yr of operations of the survey. These results suggest that the studied survey would be a significant addition to the current NEO discovery efforts. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
