Rationale and orbital options for a dedicated space-based observatory for NEOs
| Autor: | Alberto Cellino, Karri Muinonen, E. F. Tedesco |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences Computer science Passive cooling Aerospace Engineering Lagrangian point Venus Thermal load Space (mathematics) 7. Clean energy 01 natural sciences Observatory 0103 physical sciences Thermal 010303 astronomy & astrophysics 0105 earth and related environmental sciences biology Spacecraft business.industry Astronomy Astronomy and Astrophysics biology.organism_classification Geophysics 13. Climate action Space and Planetary Science Physics::Space Physics General Earth and Planetary Sciences Astrophysics::Earth and Planetary Astrophysics business |
| Zdroj: | Advances in Space Research. 33:1576-1583 |
| ISSN: | 0273-1177 |
| Popis: | We present a concept for a dedicated space-based observatory for NEO physical characterization and discovery of objects belonging to orbital classes difficult to observe from the ground (Atens, lEOs). The purpose of such a mission is to derive NEO sizes and albedos using the radiometric technique, and to discover a large fraction of the existing Atens and lEOs during an operational lifetime of a few years. Intrinsic advantages of a space-based platform for reaching the above objectives are discussed, as well as several options for the choice of the satellite orbit. It seems likely that current technology is sufficiently mature to field a relatively inexpensive mission, in which most of the thermal constraints are met by means of passive cooling. The thermal load on the system is greatly reduced if the spacecraft orbits far from the most intense sources of heat, e.g., in the L2 Lagrangian points of the Earth or Venus. Based upon preliminary simulations presented herein the Earth L2 option is the better choice. |
| Databáze: | OpenAIRE |
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