Comparative Analysis of Sky Survey Strategies to Counter Asteroid-Comet Hazard
Abstract
Small bodies of the Solar System that cause problems of asteroid-comet hazard can be divided into "asteroids" and "comets". Today we can predict the orbits of potentially hazardous asteroids with the required accuracy, with the exception of recently discovered ones, 100–200 years ahead. To predict collisions with "asteroids" it is necessary to compile as complete a list as possible and regularly improve the parameters of their orbital motion. Today, we already know almost 90% of dangerous asteroids 1 km in size or more, but the list of 100 m dangerous asteroids is complete, according to various estimates, by no more than 10%. The situation with "comets" is different. Such objects are previously unknown comets and asteroids, which should collide with the Earth during the first passage through the inner solar system after their discovery. Discovery strategy "dangerous comets" is fundamentally different from detection and observation of dangerous "asteroids". For "dangerous comets" a continuous survey of the entire sky should be carried out in order to detect them as early as possible.
- Publication:
-
INASAN Science Reports
- Pub Date:
- July 2022
- DOI:
- 10.51194/INASAN.2022.7.1.013
- Bibcode:
- 2022INASR...7...76P
- Keywords:
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- asteroid-comet hazard;
- sky survey;
- disclosure