Results 11 to 20 of about 440 (144)

Multiple moonlet mergers as the origin of the Dinkinesh-Selam system. [PDF]

Nat Commun
On November 1st, 2023, the Lucy spacecraft encountered the main-belt asteroid Dinkinesh, revealing the first confirmed contact binary moon, (152830) Dinkinesh I Selam.
Raducan SD, Madeira G, Agrusa HF, Merrill CC, Marschall R, Ferrari F, Wimarsson J, Charnoz S, Michel P, Jutzi M.   +9 more
europepmc   +2 more sources

Multisatellite Task Allocation and Orbit Planning for Asteroid Terminal Defence

Aerospace, 2022
Near-Earth asteroids are a great threat to the Earth, especially potential rendezvous and collision asteroids. To protect the Earth from an asteroid collision, it is necessary to investigate the asteroid defence problem.
Yuelong Luo, Xiuqiang Jiang, Suchuan Zhong, Yuandong Ji, Guohao Sun   +4 more
doaj   +1 more source

Physical Properties of the Young Asteroid Pair 2010 UM26 and 2010 RN221

The Astronomical Journal, 2023
The main belt asteroids 458271 (2010 UM26) and 2010 RN221 share almost identical orbital elements, and currently appear as comoving objects ∼30″ apart in the plane of the sky.
David Jewitt, Yoonyoung Kim, Jing Li, Max Mutchler   +3 more
doaj   +1 more source

Design and ballistic analysis of the mission for long-term study of the asteroid Apophis by a nanosatellite with an electric rocket propulsion system

Космические аппараты и технологии, 2020
The paper considers non-spherical objects with low gravitational attraction, such as asteroids, satellites of the planet and comets. We considered possibility of a mission to small bodies of the solar system of irregular shape on the example of the ...
O. L. Starinova, E. A. Sergaeva, A. Yu. Shornikov   +2 more
doaj   +1 more source

THE PRECESSION OF ASTEROID 1620 GEOGRAPHOS

Odessa Astronomical Publications, 2017
The frequency analysis of the fine photometric effects in the photometric observation obtained during asteroid 1620 Geographos approaching to Earth in 1994 allowed to derive the precession of asteroid spin axis.
V. V. Prokof'eva, V. P. Tarashchuk, L. G. Karachkina   +2 more
doaj   +1 more source

Near to Mid-infrared Spectroscopy of (65803) Didymos as Observed by JWST: Characterization Observations Supporting the Double Asteroid Redirection Test

The Planetary Science Journal, 2023
The Didymos binary asteroid was the target of the Double Asteroid Redirection Test (DART) mission, which intentionally impacted Dimorphos, the smaller member of the binary system.
Andrew S. Rivkin, Cristina A. Thomas, Ian Wong, Benjamin Rozitis, Julia de León, Bryan Holler, Stefanie N. Milam, Ellen S. Howell, Heidi B. Hammel, Anicia Arredondo, John R. Brucato, Elena M. Epifani, Simone Ieva, Fiorangela La Forgia, Michael P. Lucas, Alice Lucchetti, Maurizio Pajola, Giovanni Poggiali, Jessica N. Sunshine, Josep M. Trigo-Rodríguez   +19 more
doaj   +1 more source

Near-IR Spectral Observations of the Didymos System: Daily Evolution Before and After the DART Impact Indicates that Dimorphos Originated from Didymos

The Planetary Science Journal, 2023
Ejecta from Dimorphos following the DART mission impact significantly increased the brightness of the Didymos–Dimorphos system, allowing us to examine subsurface material.
David Polishook, Francesca E. DeMeo, Brian J. Burt, Cristina A. Thomas, Andrew S. Rivkin, Juan A. Sanchez, Vishnu Reddy   +6 more
doaj   +1 more source

Asteroid Companions in the Visible: WFPC 2 Images

The Planetary Science Journal
We report the observation of six asteroidal companions in direct images of five asteroids from Hubble Space Telescope (HST). These are (45) Eugenia, (87) Sylvia, (93) Minerva, (107) Camilla (the discovery observation for this companion), and (121 ...
A. D. Storrs, F. Vilas
doaj   +1 more source

EFFECT OF NON-SPHERICITY OF GRAVITATIONAL FIELD OF THE ASTEROID ON THE ITS SATELLITES ORBITS EVOLUTION

Odessa Astronomical Publications, 2016
Lately it has become possible to sufficiently precise definition of the physical and geometric characteristics of asteroid systems using radar observations (http://echo.jpl.nasa.gov/~lance/binary.neas.html), which allowed calculating the asymmetry of the
V. V. Troianskyi
doaj   +1 more source

Influence of Planetary Flyby Events on Binary Asteroid’s Impact Risk

The Astronomical Journal
Binary asteroids (BAs) may collide, stay in orbit, or dissociate after a close planetary flyby. The outcome is uncertain due to uncertainties in both the BA’s heliocentric orbit and mutual orbit.
Xiyun Hou, Pan Tan, Xin Liu, Bosheng Li
doaj   +1 more source