13 citations · 53 across the 13 of their papers we have counts for
13 papers
Massive Star Population in the Sextans A Dwarf Galaxy from HST UV Photometry
Roberto Flores, Elena Fantino, Giuseppina Battaglia +1
We build a catalog of massive (M>M) main sequence stars in the \mbox{metal-poor} (Z) dwarf irregular galaxy Sextans A. HST WFC3 UV photometry in the 2…
Uncontrolled geostationary satellites: mapping periodic transitions to chaos with Lagrangian Descriptors
Roberto Flores, Jerome Daquin, Mauro Pontani +2
Uncontrolled geostationary satellites abandoned near an unstable equilibrium point of the equator experience irregular transitions between dynamical states (continuous circulation,…
Direct low-energy trajectories to Near-Earth Objects
Elena Fantino, Roberto Flores, Giuseppe Donnarumma +2
Near-Earth Objects (NEOs) are asteroids, comets and meteoroids in heliocentric orbits with perihelion below 1.3 au. Similarly to the population of the Main Asteroid Belt, NEOs are…
Orbital perturbation coupling of primary oblateness and solar radiation pressure
Martin Lara, Elena Fantino, Roberto Flores
Solar radiation pressure can have a substantial long-term effect on the orbits of high area-to-mass ratio spacecraft, such as solar sails. We present a study of the coupling betwee…
Computing Classical Orbital Elements with Improved Efficiency and Accuracy
Roberto Flores, Elena Fantino
This paper reviews the standard algorithm for converting spacecraft state vectors to Keplerian orbital elements with a focus on its computer implementation. It analyzes the shortco…
Higher-order composition of short- and long-period effects for improving analytical ephemeris computation
Martin Lara, Elena Fantino, Hadi Susanto +1
The construction of an analytic orbit theory that takes into account the main effects of the Geopotential is notably simplified when splitting the removal of periodic effects in se…
Statistical Study of Uncontrolled Geostationary Satellites Near an Unstable Equilibrium Point
Roberto Flores, Mauro Pontani, Elena Fantino
The growth of the population of space debris in the geostationary ring and the resulting threat to active satellites require insight into the dynamics of uncontrolled objects in th…
A new automated strategy for optimizing inclined interplanetary low-thrust trajectories
Burhani M. Burhani, Elena Fantino, Roberto Flores +1
This study proposes a new automated strategy for designing and optimizing three-dimensional interplanetary low-thrust (LT) trajectories. The method formulates the design as a hybri…
End-to-end trajectory concept for close exploration of Saturn's Inner Large Moons
Elena Fantino, Burhani M. Burhani, Roberto Flores +3
We present a trajectory concept for a small mission to the four inner large satellites of Saturn. Leveraging the high efficiency of electric propulsion, the concept enables orbit i…
A Method for Accurate and Efficient Propagation of Satellite Orbits: A Case Study for a Molniya Orbit
Roberto Flores, Burhani Makame Burhani, Elena Fantino
Fast and precise propagation of satellite orbits is required for mission design, orbit determination and payload data analysis. We present a method to improve the computational per…
Long-Term Orbit Dynamics of Decommissioned Geostationary Satellites
Simone Proietti, Roberto Flores, Elena Fantino +1
In nominal mission scenarios, geostationary satellites perform end-of-life orbit maneuvers to reach suitable disposal orbits, where they do not interfere with operational satellite…
An Automatic Tree Search Algorithm for the Tisserand Graph
D. de la Torre Sangrà, E. Fantino, R. Flores +2
The Tisserand graph (TG) is a graphical tool commonly employed in the preliminary design of gravity-assisted trajectories. The TG is a two-dimensional map showing essential orbital…
Reduction of Saturn Orbit Insertion Impulse using Deep-Space Low Thrust
Elena Fantino, Roberto Flores, Jesus Pelaez +1
Orbit insertion at Saturn requires a large impulsive manoeuver due to the velocity difference between the spacecraft and the planet. This paper presents a strategy to reduce dramat…