Institute of Astronomy (INASAN)
УДК 53 Физика
УДК 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
УДК 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
УДК 523 Солнечная система
УДК 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
УДК 52-1 Метод изучения
УДК 52-6 Излучение и связанные с ним процессы
ГРНТИ 41.00 АСТРОНОМИЯ
ГРНТИ 29.35 Радиофизика. Физические основы электроники
ГРНТИ 29.31 Оптика
ГРНТИ 29.33 Лазерная физика
ГРНТИ 29.27 Физика плазмы
ГРНТИ 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
ОКСО 03.06.01 Физика и астрономия
ОКСО 03.05.01 Астрономия
ОКСО 03.04.03 Радиофизика
ББК 2 ЕСТЕСТВЕННЫЕ НАУКИ
ББК 223 Физика
ТБК 614 Астрономия
ТБК 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Since July 2014, the European Space Agency (ESA) Gaia mission has been observing objects in the Solar System as part of its various scientific missions. The third data release (DR3) includes observations of more than 150,000 objects, including asteroids. Analysis of Gaia asteroid reflectance spectra has allowed for the first time to determine spectral types for many objects and to confirm or refine previously determined classes. The distribution of spectral groups coincides with the analysis of ground-based observations performed by other authors, with a sample overlap of less than 20 %. The main groups include the S-group ($\sim$60 %) and the C-group ($\sim$20—25 %). Mars-crossing objects are slightly more likely to have mixed mineralogy. This distribution remains constant over different ranges of object diameters. Analysis of the distribution of spectral groups by semi-major axis and perihelion distance may serve as indirect evidence for the prevalence of sublimation-dust activity in primitive asteroids.
astronomical databases: Gaia Data Release 3; asteroids: Near-Earth Asteroids, Mars-crossers
1. Binzel R., DeMeo F., Turtelboom E., et al., 2019, Icarus, 324, p. 41
2. Bus S. and Binzel R., 2002, Icarus, 158, 1, p. 146
3. Busarev S., Petrova E., Shcherbina M., et al., 2023, Solar System Research, 57, 5, p. 449
4. Gaia Collaboration, 2023, Astronomy & Astrophysics, 674, id. A1
5. Shcherbina M., Kovaleva D., Shustov B., 2024, Solar System Research, 58, 3, p. 359