Active Asteroids: Main-Belt Comets and Disrupted Asteroids
نویسندگان
چکیده
منابع مشابه
Active Asteroids: Mystery in the Main Belt
Classically, comets from the outer solar system (beyond the orbit of Neptune), are expected to be icy, and thus active near the Sun, while asteroids in the inner solar system (interior to the orbit of Jupiter) are expected to be relatively ice-deficient, and thus inert. Studies of anomalous objects, most recently 133P/Elst-Pizarro, challenge this classical picture, however, and suggest that eit...
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Aims. We present the first results of a polarimetric survey of main-belt asteroids at Complejo Astronómico El Leoncito (Casleo), San Juan, Argentina. The aims of this survey are to increase the database of asteroid polarimetry, to estimate diversity in polarimetric properties of asteroids that belong to different taxonomic classes, and to search for objects that exhibit anomalous polarimetric p...
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The solar system includes numerous small objects, generally classifiable as asteroids, comets, or interplanetary dust. Asteroids and comets are of considerable importance in the study of the terrestrial planets. The impacts of these bodies with the planets have repeatedly reshaped the planets' surfaces, redistributed the surface materials and changed their chemistry and mineralogy. In addition,...
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In the past decade, new observations and new research tools have afforded us a better understanding of the interrelationships between comets and asteroids. The extensive automated surveys for near-Earth objects (NEOs) have serendipitously discovered many objects in comet-like orbits. Dynamical simulation codes have improved to the point where we can simulate the detailed orbital behavior of lar...
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We have developed a model-independent analytical method for debiasing the fourdimensional (a, e, i,H) distribution obtained in any asteroid observation program and have applied the technique to results obtained with the 0.9m Spacewatch Telescope. From 1992 to 1995 Spacewatch observed ∼ 3740 deg2 near the ecliptic and made observations of more than 60,000 asteroids to a limiting magnitude of V∼2...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2015
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921316002969