Disturbing forces responsible for the actual figure of pallas
Tóm tắt
The tri-axial figure of the asteroid 2 Pallas poses the question of the origin of this phenomenon. The tidal-forming potential and rotational disturbances may be fully responsible for it. However, this hypothesis requires Pallas to be a primordial satellite orbiting the hypothetical central body synchronously, i.e. in 1/1 orbital/rotational resonance; its mean motion has been estimated.
Tài liệu tham khảo
D.W. Dunham and 46 others: The size and shape of (2) Pallas from 1983 occultation of 1 Vulpeculae. Astron. J.,99 (1990), 1636–1662.
W.H. Munk and G.T.F. MacDonald: The rotation of the Earth. Cambridge at the University Press, 1960.
M. Burša: Figure and dynamic parameters of synchronously orbiting satellites in the solar system. Bull. Astron. Inst. Czechosl.,40 (1989), 125–130.
S.F. Dermott: Shapes and gravitational moments of satellites and asteroids. Icarus,37 (1979), 575–586.