Results 101 to 110 of about 15,631 (239)

Photometry and Models of Seven Main-Belt Asteroids

Universe
The China Near-Earth Object Survey Telescope (CNEOST) conducted four photometric surveys from 2015 to 2018 using image processing and aperture photometry techniques to obtain extensive light curve data on asteroids. The second-order Fourier series method
Jun Tian, Haibin Zhao, Bin Li, Yongxiong Zhang, Jian Chen, Leonid Elenin, Xiaoping Lu   +6 more
doaj   +1 more source

Observational Data and Orbits of the Asteroids Discovered at the Baldone Observatory in 2008–2013

Open Astronomy, 2015
The paper presents statistics of the asteroids observed and discovered at the Baldone Observatory, Latvia, in 2008–2013 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets. CCD observations
Černis K., Wlodarczyk I., Eglitis I.
doaj   +1 more source

Main-belt comets: sublimation-driven activity in the asteroid belt [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractOur knowledge of main-belt comets (MBCs), which exhibit comet-like activity likely due to the sublimation of volatile ices, yet orbit in the main asteroid belt, has increased greatly since the discovery of the first known MBC, 133P/Elst-Pizarro, in 1996, and their recognition as a new class of solar system objects after the discovery of two ...
openaire   +4 more sources

Identifying LL Chondrite Near-Earth Asteroids Using LL Chondrite Reflectance Spectra

The Astrophysical Journal Letters
Most near-Earth objects are thought to originate from the collisional fragments of the main asteroid belt. One question that remains to be resolved is the proportion of near-Earth objects sampling the core area material of the parent body to the outer ...
Pengyue Wang, Edward Cloutis, Ye Su, Man-To Hui   +3 more
doaj   +1 more source

Science rationale for an initial asteroid-dedicated mission [PDF]

Spacecraft observations of asteroids involve rendezvous or orbit with several main belt asteroids.
Fanale, F. P.
core   +1 more source

Expected spectral characteristics of (101955) Bennu and (162173) Ryugu, targets of the OSIRIS-REx and Hayabusa2 missions

, 2018
NASA's OSIRIS-REx and JAXA's Hayabusa2 sample-return missions are currently on their way to encounter primitive near-Earth asteroids (101955) Bennu and (162173) Ryugu, respectively.
Alí-Lagoa, V., Campins, H., de León, J., De Prá, M., DellaGiustina, D. N., Lauretta, D. S., Licandro, J., Lorenzi, V., Morate, D., Pinilla-Alonso, N., Popescu, M., Rizos, J. L.   +11 more
core   +1 more source

Modelling of asteroid formation in planetary vortex and calculation its orbital parameters

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2015
The theory of planetary vortex as the initial state of creation of the star systems is used to the study of conditions of formation of asteroids and calculation its orbital parameters.
L. V. Klychinska, V. I. Perekhrest
doaj   +1 more source

Reconstructing the size distribution of the primordial Main Belt

, 2017
In this work we aim to constrain the slope of the size distribution of main-belt asteroids, at their primordial state. To do so we turn out attention to the part of the main asteroid belt between 2.82 and 2.96~AU, the so-called "pristine zone", which has
Delbo, Marco, Morbidelli, Alessandro, Tsiganis, Kleomenis, Tsirvoulis, Georgios   +3 more
core   +2 more sources

5. Populations of Planet-Crossing Asteroids and the Relation of Apollo Objects to Main-Belt Asteroids and Comets [PDF]

, 1977
E. M. Shoemaker, E. F. Helin
openalex   +1 more source

The Lifetime of Ice on Main Belt Asteroids

The Astrophysical Journal, 2008
We theoretically estimate the loss rate of buried ice from spherical bodies 2-3.3 AU from the Sun. The loss rate is explored as a function of about a dozen parameters. We introduce the concept of a "buried snow line," where the loss of ice is sufficiently slow over the age of the solar system.
openaire   +2 more sources