منابع مشابه
Rotation-Resolved Spectroscopy of a Very Young Asteroid, (1270) Datura
(1270) Datura is the largest member of a very young asteroid cluster that was thought to be broken-up 0.45 Myr ago. The light-curve and the rotationresolved reflectance spectra (0.6 μm – 1.0 μm) were observed in order to find “fresh” surface. Our data show no significant spectral variation along the rotation phase. The depth of the 0.95 μm absorption band, which indicates the degree of space we...
متن کاملThe peculiar case of the Agnia asteroid family
The Agnia asteroid family, a cluster of asteroids located near semimajor axis a = 2.79 AU, has experienced significant dynamical evolution over its lifetime. The family, which was likely created by the breakup of a diameter D ∼ 50 km parent body, is almost entirely contained within the high-order secular resonance z1. This means that unlike other families, Agnia’s full extent in proper eccentri...
متن کاملThe Hoomeister Asteroid Family: Inferences from Physical Data
Asteroid (1726) Hoomeister is the lowest{ numbered and probably the largest member of a small, very compact dynamical family. Up to now, the only physical information available on this family consisted of the comparatively low IRAS albedos of Hoomeister and two other family members. After discussing the properties of the family, we report on our own observations of the optical reeectance spectr...
متن کاملThe breakup of a main-belt asteroid 450 thousand years ago.
Collisions in the asteroid belt frequently lead to catastrophic breakups, where more than half of the target's mass is ejected into space. Several dozen large asteroids have been disrupted by impacts over the past several billion years. These impact events have produced groups of fragments with similar orbits called asteroid families. Here we report the discovery of a very young asteroid family...
متن کاملYoung Asteroid 832 Karin shows no rotational spectral variations
We have made near-IR spectral observations of the very young (5.75 Myr) S-type asteroid 832 Karin, well sampled in rotational phase over its 18.35-h period. We find no significant variations in its reflectance spectrum. Karin, the brightest member of the Karin cluster (a sub-family of the larger, older Koronis dynamical family), was shown to be exceptionally young by Nesvorný et al. [Nesvorný, ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2017
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201629670