Elisabeta Petrescu
A5042322989- Astro and Planetary Science
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Isotope Analysis in Ecology
- Gamma-ray bursts and supernovae
- History and Developments in Astronomy
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Radioactive Decay and Measurement Techniques
- Atmospheric Ozone and Climate
- Spacecraft Design and Technology
- Solar and Space Plasma Dynamics
- Phytochemistry and Biological Activities
- Space Satellite Systems and Control
- Space Exploration and Technology
- Astronomical and nuclear sciences
- Technology Assessment and Management
- Atmospheric and Environmental Gas Dynamics
- Laser-induced spectroscopy and plasma
- Plant-based Medicinal Research
- Advanced Computational Techniques and Applications
- Nuclear Physics and Applications
North Atlantic Treaty Organization
2022-2024
Las Cumbres Observatory Global Telescope Network
2024
Royal Observatory of Belgium
2024
University of Liège
2024
Robert Bosch (Germany)
2022
European Space Operations Centre
2022
Abstract NASA's Double Asteroid Redirection Test (DART) mission was the first to demonstrate asteroid deflection, and mission's Level 1 requirements guided its planetary defense investigations. Here, we summarize DART's achievement of those requirements. On 2022 September 26, DART spacecraft impacted Dimorphos, secondary member Didymos near-Earth binary system, demonstrating an autonomously navigated kinetic impact into with limited prior knowledge for defense. Months subsequent Earth-based...
Abstract We present the results of a fourth planetary defense exercise, focused this time on small near-Earth asteroid (NEA) 2023 DZ2 and conducted during its close approach to Earth in March. The International Asteroid Warning Network (IAWN), with support from NASA's Planetary Defense Coordination Office (PDCO), has been coordinating observational campaigns since 2017 test operational readiness global capabilities. last campaign NEA Apophis, an outcome that exercise was need for short burst...
Abstract We describe results of a planetary defense exercise conducted during the close approach to Earth by near-Earth asteroid (99942) Apophis 2020 December–2021 March. The community has been conducting observational campaigns since 2017 test operational readiness global capabilities. These community-led exercises were carried out with support NASA’s Planetary Defense Coordination Office and International Asteroid Warning Network. campaign is third in our series exercises. goal this was...
Within our international program to obtain accurate physical properties of trans-Neptunian objects (TNOs) we predicted a stellar occultation by the TNO (38628) Huya star Gaia DR2 4352760586390566400 (mG = 11.5 mag.) for March 18, 2019. After an extensive observational campaign, updated prediction and it turned out be favorable central Europe. Therefore, mobilized half hundred professional amateur astronomers, was finally detected from 21 telescopes located at 18 sites. This makes event one...
During the 2014–2015 mutual events season, Institut de Mécanique Céleste et Calcul des Éphémérides (IMCCE), Paris, France, and Sternberg Astronomical Institute (SAI), Moscow, Russia, led an international observation campaign to record ground-based photometric observations of Galilean moon occultations eclipses. We focused on processing complete data base compute new accurate astrometric positions. used our method derive positions from light curves events. developed model eclipses, while...
Abstract As part of the International Asteroid Warning Network's observational exercises, we conducted a campaign to observe near-Earth asteroid 2019 XS around its close approach Earth on 2021 November 9. The goal was characterize errors in observation times reported Minor Planet Center, which become an increasingly important consideration as astrometric accuracy improves and more fast-moving asteroids are observed. exercise, total 957 observations during encounter were subsequently analyzed...
Context. Near-earth objects (NEOs), thanks to their proximity, provide a unique opportunity investigate asteroids with diameters down dozens of meters. The study NEOs is also important because potential hazard the Earth. investigation small challenging from Earth as they are observable only for short time following discovery and can sometimes be reached again years or decades later. Aims. We aim derive visible colors perform an initial taxonomic classification main focus on smaller recent...
The NASA Double Asteroid Redirection Test (DART) spacecraft was the first Planetary Defence mission to hit an asteroid, specifically moon of Didymos, Dimorphos [1]. This impact altered Dimorphos's orbital parameters and excavating significant amount material. resultant observed through limited ground-based telescopes, for several months after impact, asteroid became man-made active exhibiting mass loss that manifested as a tail, which changed over time [2].The measurements presented here...
The Trans-Neptunian Object with provisional designation 1995SM55 is one of the few members Haumea orbital cluster and therefore it a very relevant body to study through occultation technique in order accurately determine size, shape geometric albedo.  A wide campaign involving 50 telescopes was arranged observe stellar by this on 25 February 2024, given that an astrometric update soon before indicated good chance detecting event. Taking into account involved star relatively bright,...
<p>The NEO Coordination Centre (NEOCC) is one of the key components ESA’s Planetary Defence activities. Among its goals, it has a mandate to coordinate, collect and analyse telescopic observations NEOs. To reach this objective, we developed wide network observational assets. In contribution, discuss some latest results obtained thanks unique global network.</p> <p>In recent years, ESA strengthened follow-up telescopes. It now direct...
Due to their proximity Near-Earth objects (NEOs) provide us with a unique opportunity investigate asteroids diameters down dozens of meters. Moreover, NEOs create constant potential hazard the Earth, and thus study physical properties is crucial for estimating risks. A new photometric survey was carried out in framework NEOROCKS (NEO Rapid Observation, Characterization, Key Simulations) project funded by European Union’s Horizon 2020 program aim derive visible colors perform...