8 citations · 29 across the 9 of their papers we have counts for
10 papers
Assessment of sky brightness in central Portugal: the Dark Sky destination "Aldeias do Xisto" case study
Domingos Barbosa, Dalmiro Maia, Bruno Morgado +5
A combination of remote sensing techniques, open space data and field testing was developed to derive astronomical and meteorological parameters and assess Dark Sky brightness of t…
Dynamical Behavior and Surface Features of Large Super-Fast Rotator Near-Earth Asteroid (436724) 2011 UW158
Caio Gomes, Andre Amarante, Filipe Monteiro +7
The sub-kilometer Super-Fast Rotator and Potentially Hazardous Asteroid (436724) 2011 UW158 exhibits an extreme dynamical environment driven by its rotational period of 0.61072 h.…
Designing 3D transfers: application to Earth-Moon
Allan Kardec de Almeida Junior, Timothée Vaillant, João P. F. Agostinho +2
Three dimensional Earth-Moon transfers usually consume more fuel than planar ones, but are needed depending on the latitude of the launch site and the desired inclination of the fi…
PASO -- Astronomy and Space Situational Awareness in a Dark Sky Destination
Domingos Barbosa, Bruno Coelho, Miguel Bergano +17
The Pampilhosa da Serra Space Observatory (PASO) is located in the center of the continental Portuguese territory, in the heart of a certified Dark Sky destination by the Starlight…
Tangent Velocity constraint for orbital maneuvers with Theory of Functional Connections
A. K. de Almeida, T. Vaillant, V. M. de Oliveira +9
Maneuvering a spacecraft in the cislunar space is a complex problem, since it is highly perturbed by the gravitational influence of both the Earth and the Moon, and possibly also t…
Orbit transfer using Theory of Functional Connections via change of variables
Allan K. de Almeida, Antonio F. B. A. Prado, Daniele Mortari
This work shows that a class of astrodynamics problems subject to mission constraints can be efficiently solved using the Theory of Functional Connections (TFC) mathematical framew…
Optimal transfers from Moon to halo orbit of the Earth-Moon system
L. B. T. Santos, Allan Kardec de Almeida, P. A. Sousa-Silva +4
In this paper, we seek optimal solutions for a transfer from a parking orbit around the Moon to a halo orbit around of the Earth-Moon system, by applying a single maneuver an…
Theory of Functional Connections and Nelder-Mead optimization methods applied in satellite characterization
Allan Kardec de Almeida Junior, Safwan Aljbaae, Timothée Vaillant +10
The growing population of man-made objects with the build up of mega-constellations not only increases the potential danger to all space vehicles and in-space infrastructures (incl…
Numerical investigations of the orbital dynamics around a synchronous binary system of asteroids
L. B. T. Santos, Allan Kardec de Almeida, P. A. Sousa-Silva +5
In this article, equilibrium points and families of periodic orbits in the vicinity of the collinear equilibrium points of a binary asteroid system are investigated with respect to…
Analysis of the dynamics of a spacecraft in the vicinity of an asteroid binary system with equal masses
L. B. T. Santos, P. A. Sousa-Silva, M. O. Terra +8
In this work, we performed a dynamical analysis of a spacecraft around a nearly equal-mass binary near-Earth asteroid with application to the asteroid 2017 YE5, which is also a pos…