Results 11 to 20 of about 40,224 (152)
Osculating Keplerian Elements for Highly Non-Keplerian Orbits [PDF]
, 2017 This paper presents a mapping between the elements of highly non-Keplerian orbits and classical orbital elements. Three sets of elements are discussed and mappings are derived in closed, analytical form for both the direct and inverse problem. Advantages
Ceriotti, Matteo +2 more
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Dynamics of spinning test particles in Kerr spacetime [PDF]
, 2002 We investigate the dynamics of relativistic spinning test particles in the spacetime of a rotating black hole using the Papapetrou equations. We use the method of Lyapunov exponents to determine whether the orbits exhibit sensitive dependence on initial ...
Hartl, Michael D.
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Diffractive Sail-Based Displaced Orbits for High-Latitude Environment Monitoring
Remote Sensing, 2023 This paper analyzes the possibility of maintaining a circular displaced non-Keplerian orbit around the Sun by means of a Sun-facing diffractive sail. With the goal of monitoring the Earth’s high-latitude regions, the spacecraft is required to track its ...
M. Bassetto, G. Mengali, A. Quarta
semanticscholar +1 more source
Efficient integration of the variational equations of multi-dimensional Hamiltonian systems: Application to the Fermi-Pasta-Ulam lattice [PDF]
, 2011 We study the problem of efficient integration of variational equations in multi-dimensional Hamiltonian systems. For this purpose, we consider a Runge-Kutta-type integrator, a Taylor series expansion method and the so-called `Tangent Map' (TM) technique ...
Campbell D. K. +7 more
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Uniform Semiclassical Approximation for the Wigner $6j$ Symbol in Terms of Rotation Matrices [PDF]
, 2009 A new uniform asymptotic approximation for the Wigner $6j$ symbol is given in terms of Wigner rotation matrices ($d$-matrices). The approximation is uniform in the sense that it applies for all values of the quantum numbers, even those near caustics. The
Littlejohn, Robert G., Yu, Liang
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Remote Sensing, 2023 Reliability is the most critical characteristic of space missions, for example in capturing and tracking moving targets. To this end, two methods are designed to track sunlight using solar remote-sensing instruments (SRSIs).
Yingqiu Shao +6 more
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A PRG for Lipschitz Functions of Polynomials with Applications to Sparsest Cut [PDF]
, 2012 We give improved pseudorandom generators (PRGs) for Lipschitz functions of low-degree polynomials over the hypercube. These are functions of the form psi(P(x)), where P is a low-degree polynomial and psi is a function with small Lipschitz constant.
Kane, Daniel, Meka, Raghu
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The Plane of the Kuiper Belt [PDF]
, 2004 We present a robust method for measuring the effective plane of the Kuiper belt. The derived plane has an inclination with respect to the ecliptic of 1º.86 and an ascending node of 81º.6, with a 1 σ error in pole position of the plane of 0º.37. The plane
Brown, Michael E., Pan, Margaret
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Properties of triple error orbits G and their invariants in Bose – Chaudhuri – Hocquenghem codes C7
Proceedings of the National Academy of Sciences of Belarus Physical-Technical Series, 2019 This work is the further development of the theory of norms of syndromes: the theory of polynomial invariants of G-orbits of errors expands with the group G of automorphisms of binary cyclic BCH codes obtained by joining the degrees of cyclotomic ...
V. A. Lipnitski, A. Serada
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Pencil-Beam Surveys for Trans-Neptunian Objects: Novel Methods for Optimization and Characterization
, 2010 Digital co-addition of astronomical images is a common technique for increasing signal-to-noise and image depth. A modification of this simple technique has been applied to the detection of minor bodies in the Solar System: first stationary objects are ...
Kavelaars, JJ., Parker, Alex H.
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