Mattia Galiazzo

Ministero dell'Istruzione, dell'Università e della Ricerca | MIUR · Dipartimento per l'Istruzione

Hungaria asteroids, whose orbits occupy the region in element space between $1.78< a< 2.03$ AU, $e<0.19$, $12^\circ<i<31^\circ$, are a possible source of Near-Earth Asteroids (NEAs). Named after (434) Hungaria these asteroids are relatively small, since the largest member of the group has a diameter of just about 11 km. They are mainly perturbed by...

The Hungaria family (the closest region of the Main Belt to Mars) is an important source of planet-crossing asteroids and even impactors of terrestrial planets. We present the possibility of asteroids coming from the Hungaria family being captured into co-orbital motion with the terrestrial planets in the inner Solar system. Therefore, we have carr...

Both Centaurs and trans-Neptunian objects (TNOs) are minor bodies found in the outer Solar System. Centaurs are a transient population that moves between the orbits of Jupiter and Neptune, and they probably diffused out of the TNOs. TNOs move mainly beyond Neptune. Some of these objects display episodic cometary behaviour; a few percent of them are...

The Hungaria asteroid family (Named after (434) Hungaria), which consists of more than 5000 members with semi-major axes between 1.78 and 2.03 AU and have inclinations of the order of 20°, is regarded as one source for Near-Earth Asteroids (NEAs). They are mainly perturbed by Jupiter and Mars, and are ejected because of mean motion and secular reso...

The study of meteorite craters on Earth provides information about the dynamic evolution of bodies within the Solar System. Bosumtwi crater is a well studied, 10.5 km in diameter, ca. 1.07 Ma old impact structure located in Ghana. The impactor was �1 km in diameter, an ordinary chondrite and struck the Earth with an angle between 30� and 45� from t...

The extra-solar planetary system Luyten is relatively close (12.3 light years) to our Sun. The Luyten’s red dwarf star is orbited by four planets, two of them Earth-like (in mass) and in 4:1 resonance. Extra-solar systems might contain asteroid belts such as ours. Therefore, it is important to investigate whether it is possible to have a stable pop...

The two and three body mean motion resonances with Jupiter and Mars (and possible with Earth) may have a significant effect on the dynamics of very young close asteroid pairs and families. The best known example is the influence 9:16 resonance with Mars to some members of Datura family. It is evident, that the evolution of this family can be proper...

The two and three body mean motion resonances with Jupiter and Mars (and possible with Earth) may have significant effect on dynamics of very young close asteroids pairs and families. The most known example is influence 9:16 resonance with Mars to some members of Datura family. It is evident, that evolution of this family can be properly reconstruc...

Several papers have recently suggested the possible presence of a ninth planet (Planet X) that might explain the gravitational perturbations of a number of detached Trans-Neptunian objects. To analyze the possibility further, we have applied celestial mechanics, engineering physics and statistical analysis to develop improved estimates of the plane...

Centaurs are solar system objects with orbits situated among the orbits of Jupiter and Neptune. Centaurs represent one of the sources of Near-Earth Objects. Thus, it is crucial to understand their orbital evolution which in some cases might end in collision with terrestrial planets and produce catastrophic events. We study the orbital evolution of...

Centaurs are solar system objects with orbits situated among those of the giant planets. Originating mainly from the Trans-Neptunian objects, Centaurs represent one of the sources of Near-Earth Objects. Thus, it is crucial to understand their orbital evolution which in some cases might end in collision with terrestrial planets and produce catastrop...

In this work we describe a genetic algorithm which is used in order to study orbits of minor bodies in the frames of close encounters. We find that the algorithm in combination with standard orbital numerical integrators can be used as a good proxy for finding typical orbits of minor bodies in close encounters with planets and even their moons, sav...

Among the current population of the 81 known trans-Neptunian binaries (TNBs), only two are in orbits that cross the orbit of Neptune. These are (42355) Typhon-Echidna and (65489) Ceto-Phorcys. In the present work, we focused our analyses on the temporal evolution of the Typhon-Echidna binary system through the outer and inner planetary systems. Usi...

We examine the conditions under which material from the martian moons Phobos and Deimos could reach our planet in the form of meteorites. We find that the necessary ejection speeds from these moons (900 and 600 m/s for Phobos and Deimos respectively) are much smaller than from Mars' surface (5000 m/s). These speeds are below typical impact speeds f...

Background Asteroids colliding with planets vary in composition and taxonomical type. Among Near‐Earth Asteroids (NEAs) are the V‐types, basaltic asteroids that are classified via spectroscopic observations. Materials and Methods we performed numerical simulations and statistical analysis of close encounters and impacts between V‐type NEAs and the...

Most Howardite-Eucrite-Diogenite (HED) meteorites (analogs to V-type asteroids) are thought to originate from asteroid (4) Vesta. However, some HEDs show distinct oxygen isotope ratios and therefore are thought to originate from other asteroids. In this study, we try to identify asteroids that may represent parent bodies of those mismatching HEDs....

Centaurs are objects whose orbits are found between those of the giant planets. They are supposed to originate mainly from the TransNeptunian objects, and they are among the sources of NearEarth Objects.TransNeptunian Objects (TNOs) cross Neptune's orbit and produce the Centaurs. We investigate their interactions with main belt asteroids to determi...

67P/Churyumov-Gerasimenko is a bi-lobed comet connected by a thick neck. The aim of our work is to find the possible origins of this comet, dynamically and physically.

Report of a night observation at the Figl Observatory, Austria. VRI photometry, measure of the coma and of the projection of the tail. Minimum distances from Mars, Earth and Sun.

The Hungaria asteroid family, which consists of more than 8000 members with semi-major axes between 1.78 and 2.03 AU, is regarded as one source for Near-Earth Asteroids. Named after (434) Hungaria these asteroids are relatively small (mean diameter $\sim 1$ km) and have inclinations of the order of $20^\circ$. They are mainly perturbed by Jupiter a...

As part of the national scientific network 'Pathways to Habitable Worlds' the delivery of water onto terrestrial planets is a key question since water is essential for the development of life as we know it. After summarizing the state of the art we show some first results of the transport of water in the early Solar System for scattered main belt o...

The Vesta family is the largest asteroidal family known in the inner main belt, and it is believed to be a source of HED meteorites. We study its long-term evolution and investigate close encounters with Ceres, Vesta, and terrestrial planets.

The Vesta family is the largest asteroidal family known in the inner asteroid belt. Most of the identified members which belong to this family are V-type asteroids and they are regarded as one source or NEAs. They are also thought to be the source of the HED meteorites (Howardite Eucrite Diogenite), in articular these are supposed to come from the...

The Earth is target to many celestial objects, among them Near Earth Asteroids (NEA) play a significant role. Different dynamical groups have been found, the source of these asteroids is mainly the main belt and, in particular the Hungaria group. We carry out a statistical investigation by numerical integration of the motion of real asteroids and t...