The results of UBVRI-photometry at KGO SAI MSU and comparative analysis of physical and dynamic parameters of asteroids with probable signs of sublimation activity
Abstract
From December 2021 to March 2022, observations of 56 asteroids (45 Main Belt asteroids and 11 near-Earth asteroids, Trojan asteroids and Mars crossers) of mainly primitive types moving near perihelion were carried out on the semi-automatic RC- 600 telescope of the CMO SAI MSU (Caucasian Mountain Observatory of the SAI MSU). The purpose of the observation program was to cover the maximum number of asteroids to clarify their spectral class, as well as to identify signs of probable sublimation activity. About a fifth of the asteroids did not have a certain spectral class, which was estimated thanks to our spectral observations. Some asteroids, namely 145 Adeona, 779 Nina, 521 Brixia and 322 Phaeo, had obvious signs of sublimation activity, and asteroids 751 Faina, 762 Pulkova and 778 Theobalda can be assumed to have activity. For all asteroids of the Main Belt included in this observation program, a comparative analysis of physical and dynamic parameters, such as diameter, rotation period around its own axis, the major semi-axis of the orbit, eccentricity and inclination of the orbit, was carried out.
- Publication:
-
INASAN Science Reports
- Pub Date:
- July 2022
- DOI:
- 10.51194/INASAN.2022.7.1.015
- Bibcode:
- 2022INASR...7...93S
- Keywords:
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- Main Belt asteroids;
- photometry;
- sublimation activity;
- spectral type