Proposal Identi cation No.: R1605 Date Received: 2001-Oct-01 21:07:53 Technical Page Proposal Type: Regular General Category: Planetary Radar Sub-Category: Radar Observation Category: Solar System Total Time Requested: 151 Hours Proposal Title: Completing the Radar Survey of Fifty Main-Belt Asteroids ABSTRACT: We propose to complete an ongoing two-year radar survey of fty main-belt asteroids, extending the project for one year to compensate for instrumental problems encountered throughout 2000. ...

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. The International Conference . Absorption Spectra of Translucent Interstellar Clouds . Observers meet Experimentalists . August, 4-9, 2008 . Special Astrophysical Observatory of the Russian Academy of Science, . Nizhnij Arkhyz, Karachaevo-Cherkesia, Russia .

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SITE 2010 Comprehensive Characterization of Astronomical Sites Kislovodsk, Russia, 49 October 2010 Conference Summary Marc S. Sarazin*a a European Southern Observatory, Garching, Germany Abstract The main topics discussed during the Site 2010 conference are outlined and the outcome is described. Keywords: Astronomical Site testing, precipitable water vapor, atmospheric turbulence, cloudiness, seeing 1. ... Site surveys for National observatory projects in China, India, and Iran benefit from this. ...

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... Since the reddening found for the stars in Table 13 was small, no reddening correction was attempted. ... These diamonds indicate the positions of very low mass, 3 Myr old, objects from the work of Burrows et al. ... This optical V versus R - I scheme is a very powerful method of detecting very low mass (VLM) objects. ... Because of this, young brown dwarfs are intrinsically no more difficult to observe in the optical than low mass stars at the age of Orionis. ...

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Estimating the NEO Population and Impact Risk: Past, Present and Future . ... Since most of the risk resides in the largest impactors, finding that fraction of the largest bodies, and that none of them has a significant chance of impacting in the next century or so, "retires" more than 90 % of the impact risk, including most of the risk of a globally catastrophic impact event. ... In the mid-size range, from ~150 m to ~1 km, the main risk is from tsunami generated by an ocean impact. ...

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