- PII
- S30345170S0004629925030089-1
- DOI
- 10.7868/S3034517025030089
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 102 / Issue number 3
- Pages
- 229-236
- Abstract
- The aim of the work is to test a new formula for the angular velocity of rotation Ω of inhomogeneous equilibrium figures on the model of a unique rapidly rotating trans-Neptunian dwarf planet Haumea. The three-axis two-component model of Haumea consists of an ellipsoidal rocky core and a thick confocal ice shell. The parameters of this model are determined from a system of eight algebraic equations that take into account the complete kinematic-photometric information about the planetoid. Using the methods of potential theory, the components of the internal and external gravitational energy of the model on which this Ω depends are found. For this purpose, a refined expression for the gravitational energy of a homogeneous confocal shell and a formula for the mutual energy of the core and the shell are used. It was found that in order to be consistent with the observed rotation period of Haumea τ = 3.915, this model should be considered as a polytrope with the index
- Keywords
- фигуры равновесия однородные и неоднородные угловая скорость вращения внешняя и внутренняя составляющие гравитационной энергии политропа карликовая планета Haumea
- Date of publication
- 14.10.2024
- Year of publication
- 2024
- Number of purchasers
- 0
- Views
- 52
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