Results 61 to 70 of about 5,178 (157)

The collinear equilibrium points in the elliptic restricted synchronous three-body problem under an oblate primary and a dipole secondary. [PDF]

Heliyon, 2023
Singh J, Tyokyaa RK.
europepmc   +1 more source

Twist and non-twist regimes of the oblate planet problem

Rendiconti Lincei, Matematica e Applicazioni, 2017
We consider the dynamics of a point-mass object, e.g. a small satellite, around a primary rigid body, e.g. a planet. We assume that the planet is oblate and axially symmetric with respect to the vertical axis. Revisiting a procedure described in [19], we make use of the first integrals (the energy and the projection of the angular momentum on the ...
Celletti A., Paita F., Pucacco G.
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Invariant properties of the spheroidal potential of an oblate planet

Journal of Research of the National Bureau of Standards Section B Mathematics and Mathematical Physics, 1966
Gravitational potential of oblate planet, expressed in terms of oblate spheroidal coordinates, generalized by means of transformation of associated Cartesian ...
openaire   +2 more sources

A Return to the Sextant-Maritime Navigation Using Celestial Bodies and the Horizon. [PDF]

Sensors (Basel), 2023
Critchley-Marrows JJR, Mortari D.
europepmc   +1 more source

Six-degree-of-freedom program to optimize simulated trajectories (6D POST). Volume 1: Formulation manual [PDF]

The basic equations and models used in a computer program (6D POST) to optimize simulated trajectories with six degrees of freedom were documented. The 6D POST program was conceived as a direct extension of the program POST, which dealt with point masses,
Brauer, G. L., Habeger, A. R., Stevenson, R.   +2 more
core   +1 more source

Apsidal precession of orbits about an oblate planet

The Astronomical Journal, 1981
It is noted that expressions for the apsidal precession rates to second order on J2 appear in the literature in at least three apparently mutually contradictory forms. The expressions are reconciled by accounting for subtle differences in the definitions of orbital elements.
openaire   +1 more source

Core Eigenmodes and their Impact on the Earth's Rotation. [PDF]

Surv Geophys, 2022
Triana SA, Dumberry M, Cébron D, Vidal J, Trinh A, Gerick F, Rekier J.   +6 more
europepmc   +1 more source

Program to Optimize Simulated Trajectories (POST). Volume 1: Formulation manual [PDF]

A general purpose FORTRAN program for simulating and optimizing point mass trajectories (POST) of aerospace vehicles is described. The equations and the numerical techniques used in the program are documented. Topics discussed include: coordinate systems,
Brauer, G. L., Cornick, D. E., Habeger, A. R., Petersen, F. M., Stevenson, R.   +4 more
core   +1 more source

Jupiter Science Enabled by ESA's Jupiter Icy Moons Explorer. [PDF]

Space Sci Rev, 2023
Fletcher LN, Cavalié T, Grassi D, Hueso R, Lara LM, Kaspi Y, Galanti E, Greathouse TK, Molyneux PM, Galand M, Vallat C, Witasse O, Lorente R, Hartogh P, Poulet F, Langevin Y, Palumbo P, Gladstone GR, Retherford KD, Dougherty MK, Wahlund JE, Barabash S, Iess L, Bruzzone L, Hussmann H, Gurvits LI, Santolik O, Kolmasova I, Fischer G, Müller-Wodarg I, Piccioni G, Fouchet T, Gérard JC, Sánchez-Lavega A, Irwin PGJ, Grodent D, Altieri F, Mura A, Drossart P, Kammer J, Giles R, Cazaux S, Jones G, Smirnova M, Lellouch E, Medvedev AS, Moreno R, Rezac L, Coustenis A, Costa M.   +49 more
europepmc   +1 more source

Geometric approximations for global atmospheres on moderately oblate planets

Quarterly Journal of the Royal Meteorological Society
AbstractCertain geometric approximations, such as the widely used traditional shallow‐atmosphere, spherical‐geoid (TSA‐SG) and deep‐atmosphere, spherical‐geoid (DA‐SG) approximations, boil down to the specification of a spatial metric tensor. In order to eliminate the leading‐order errors due to the SG and TSA approximations, a sequence of four ...
openaire   +2 more sources