Keplerian Orbits Through the Conley–Zehnder Index [PDF]
Qualitative Theory of Dynamical Systems, 2021 21 pages, 3 ...
Henry Kavle +2 more
openaire +3 more sources
A class of symplectic integrators with adaptive timestep for separable Hamiltonian systems [PDF]
, 1999 Symplectic integration algorithms are well-suited for long-term integrations of Hamiltonian systems because they preserve the geometric structure of the Hamiltonian flow.
Evans N. W. +3 more
core +4 more sources
The Orbit of Warm Jupiter WASP-106 b is Aligned with its Star
The Astronomical Journal, 2023 Understanding orbital obliquities, or the misalignment angles between a star’s rotation axis and the orbital axis of its planets, is crucial for unraveling the mechanisms of planetary formation and migration.
Jan-Vincent Harre +5 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2019 This paper investigates the long-term evolution of spacecraft in Highly Elliptical Orbits (HEOs). The single averaged disturbing potential due to luni-solar perturbations, zonal harmonics of the Earth gravity field is written in mean Keplerian elements ...
Camilla Colombo
doaj +1 more source
Spatial and Temporal Sampling Properties of a Large GNSS-R Satellite Constellation
Remote Sensing, 2023 Using large constellations of smallsats, mission designers can improve sampling density and coverage. We develop performance metrics that characterize key sampling properties for applications in numerical weather prediction and optimize orbit design ...
Jack Winkelried +2 more
doaj +1 more source
Radial velocities from the N2K Project: 6 new cold gas giant planets orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810 [PDF]
, 2018 The N2K planet search program was designed to exploit the planet-metallicity correlation by searching for gas giant planets orbiting metal-rich stars. Here, we present the radial velocity measurements for 378 N2K target stars that were observed with the ...
Bakos, Gaspar +4 more
core +4 more sources
Accessibility of the resources of near Earth space using multi-impulse transfers [PDF]
, 2010 Most future concepts for exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this mass requires overcoming Earth's natural gravity well, which imposes a distinct obstacle to space-faring.
Bonanno C. +6 more
core +1 more source
Antenna Pointing to the Geo Satellite Using Converted NORAD TLE from Osculating Orbital Elements [PDF]
Journal of Astronomy and Space Sciences, 2007 Antenna pointing analysis for a geostationary satellite has been performed for using the NORAD Two-Line-Elements (TLE) converted from osculating Keplerian orbital elements.
Byoung-Sun Lee +3 more
doaj +1 more source
A novel interplanetary communications relay [PDF]
, 2010 A case study of a potential Earth-Mars interplanetary communications relay, designed to ensure continuous communications, is detailed. The relay makes use of orbits based on artificial equilibrium points via the application of continuous low thrust ...
Andersson G. +12 more
core +1 more source
Interception of a free-rotating satellite: an autonomous rendezvous scenario
Journal of Telecommunications and Information Technology, 2023 The spacecraft’s lifetime is often limited by reliability and redundancy of its components. Furthermore, serious restrictions on duration of spacecraft operations are posed by finite amount of fuel or cooling agent.
Karol Seweryn, Marek Banaszkiewicz
doaj +1 more source