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View article: A Cloud-native Agile approach to cyber platform prototyping and integration for astronomy: the ENGAGE SKA case
A Cloud-native Agile approach to cyber platform prototyping and integration for astronomy: the ENGAGE SKA case Open
The Square Kilometre Array (SKA) Observatory is gearing up the formal construction of its two radio interferometers in Australia and South Africa after the end of design and pre-construction phases. Agile methodologies, the Cloud native Co…
View article: Connecting Earth and Moon via the L1 Lagrangian point
Connecting Earth and Moon via the L1 Lagrangian point Open
The renewed global interest in lunar exploration requires new orbital strategies to ensure flight safety which can benefit extended lunar missions and service a plethora of planned instruments in the lunar orbit and surface. We investigate…
View article: PASO -- Astronomy and Space Situational Awareness in a Dark Sky Destination
PASO -- Astronomy and Space Situational Awareness in a Dark Sky Destination Open
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 Foundation (Aldeias do Xisto) and has been an instrumental…
View article: Tangential velocity constraint for orbital maneuvers with Theory of Functional Connections
Tangential velocity constraint for orbital maneuvers with Theory of Functional Connections Open
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 the Sun. Trajectories minimizing the needed fuel are general…
View article: Tangent Velocity constraint for orbital maneuvers with Theory of Functional Connections
Tangent Velocity constraint for orbital maneuvers with Theory of Functional Connections Open
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 the Sun. Trajectories minimizing the needed fuel are general…
View article: Theory of Functional Connections and Nelder-Mead optimization methods applied in satellite characterization
Theory of Functional Connections and Nelder-Mead optimization methods applied in satellite characterization Open
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 (including space observatories), but above all poses a serious t…
View article: Dynamics of trans-Neptunian objects near the 3/1 mean-motion resonance with Neptune
Dynamics of trans-Neptunian objects near the 3/1 mean-motion resonance with Neptune Open
The complex classification of trans-Neptunian objects (TNOs) that are captured in mean-motion resonances (MMRs) and the constraint of their multiple origins are two significant open problems concerning the Solar System. The case-by-case st…
View article: Reversible time-step adaptation for the integration of few-body systems
Reversible time-step adaptation for the integration of few-body systems Open
The time-step criterion plays a crucial role in direct N-body codes. If not chosen carefully, it will cause a secular drift in the energy error. Shared, adaptive time-step criteria commonly adopt the minimum pairwise time-step, which suffe…
View article: Reversible time-step adaptation for the integration of few-body systems
Reversible time-step adaptation for the integration of few-body systems Open
The time step criterion plays a crucial role in direct N-body codes. If not chosen carefully, it will cause a secular drift in the energy error. Shared, adaptive time step criteria commonly adopt the minimum pairwise time step, which suffe…
View article: Eviction-like resonances for satellite orbits
Eviction-like resonances for satellite orbits Open
The motion of a satellite can experience secular resonances between the precession frequencies of its orbit and the mean motion of the host planet around the star. Some of these resonances can significantly modify the eccentricity (evectio…
View article: Influence of some resonances on the inclination of a satellite
Influence of some resonances on the inclination of a satellite Open
Knowing if the inclination of a satellite with respect to the equator of its planet is primordial can give hints on its origin and its formation. However, several mechanisms are able to modify its inclination during its evolution. The orbi…
View article: Long-term orbital and rotational motions of Ceres and Vesta
Long-term orbital and rotational motions of Ceres and Vesta Open
Context. The dwarf planet Ceres and the asteroid Vesta have been studied by the Dawn space mission. They are the two heaviest bodies of the main asteroid belt and have different characteristics. Notably, Vesta appears to be dry and inactiv…