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JOURNALS // Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki // Archive

Zh. Vychisl. Mat. Mat. Fiz., 2020 Volume 60, Number 10, Pages 1764–1776 (Mi zvmmf11149)

This article is cited in 9 papers

Mathematical physics

Sensitivity of the Euler–Poinsot tensor values to the choice of the body surface triangulation mesh

A. A. Burovab, V. I. Nikonovab

a Dorodnitsyn Computing Center, Russian Academy of Sciences, Moscow, 119991 Russia
b National Research University Higher Scholl of Economics, Moscow, 101000 Russia

Abstract: The inertial characteristics of celestial bodies can be calculated using their triangle partitions based on photometric observations. Such partitions can be refined along with the accumulation of necessary information. In this regard, the question arises to what extent the approximations of the inertial characteristics of celestial bodies, in particular, the approximations of the components of the Euler–Poinsot tensor of different orders, are susceptible to the choice of such partitions. Such components enter into the expansion of the gravitational potential in harmonic polynomials. In this paper, for some small celestial bodies, a comparison of such coefficients is carried out as coarse partitions are replaced with finer ones.

Key words: approximation of gravitational potential, Euler–Poinsot tensor.

UDC: 517.93

Received: 03.02.2020
Revised: 03.02.2020
Accepted: 07.06.2020

DOI: 10.31857/S0044466920100063


 English version:
Computational Mathematics and Mathematical Physics, 2020, 60:10, 1708–1720

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© Steklov Math. Inst. of RAS, 2025