TIDAL CHANGES IN THE ROTATIONAL STATE OF ASTEROIDS ASEVOLUTION FACTOR OF THE MAGNITUDE OF THE YARKOVSKY EFFECT
Section: CELESTIAL MECHANICS AND ASTROMETRY
Authors:
1.
Pulkovo Observatory
2.
Pulkovo Observatory
3.
Pulkovo Observatory
4.
Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo
Saint-Petersburg State University
Saint-Petersburg State University
Type:
Сonference article
Published:
27.12.2024
Subject area:
UDK 52
UDK 53
UDK 520
UDK 521
UDK 523
UDK 524
UDK 52-1
UDK 52-6
GRNTI 41.00
GRNTI 29.35
GRNTI 29.31
GRNTI 29.33
GRNTI 29.27
GRNTI 29.05
OKSO 03.06.01
OKSO 03.05.01
OKSO 03.04.03
BBK 2
BBK 223
TBK 614
TBK 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
UDK 53
UDK 520
UDK 521
UDK 523
UDK 524
UDK 52-1
UDK 52-6
GRNTI 41.00
GRNTI 29.35
GRNTI 29.31
GRNTI 29.33
GRNTI 29.27
GRNTI 29.05
OKSO 03.06.01
OKSO 03.05.01
OKSO 03.04.03
BBK 2
BBK 223
TBK 614
TBK 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Language:
English
Keywords:
minor planets, asteroids: general
Funding:
The study was funded by a grant Russian Science Foundation No 23-22-00306, https://rscf.ru/project/23-22-00306/.
Abstract (English):
We examined possible tidal-induced leaps in the rotational state parameters of the asteroids during their planet approaches. These dramatic changes in the rotational period and obliquity lead to significant changes in orbital dynamics due to the corresponding Yarkovsky acceleration $A_2$ leap. Our numerical simulations of asteroid rotational parameters evolution due to their planet encounters support the conclusion that significant $A_2$ changes can happen when planetocentric distance is less than ten planetary radii. We have found nine asteroids with anomalous $A_2$ values. However, there is no exact evidence that these$A_2$ discrepancies can be explained by tidal effects only.
We examined possible tidal-induced leaps in the rotational state parameters of the asteroids during their planet approaches. These dramatic changes in the rotational period and obliquity lead to significant changes in orbital dynamics due to the corresponding Yarkovsky acceleration $A_2$ leap. Our numerical simulations of asteroid rotational parameters evolution due to their planet encounters support the conclusion that significant $A_2$ changes can happen when planetocentric distance is less than ten planetary radii. We have found nine asteroids with anomalous $A_2$ values. However, there is no exact evidence that these$A_2$ discrepancies can be explained by tidal effects only.
Keywords:
minor planets, asteroids: general
minor planets, asteroids: general
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