The capability of a near-Earth asteroid search in the polar region of the sky using a retrofitted Baker-Nunn telescope

Details The capability of a near-Earth asteroid search in the polar region of the sky using a retrofitted Baker-Nunn telescope The capability of a near-Earth asteroid search in the polar region of the sky using a retrofitted Baker-Nunn telescope

Publishing date

Aug 2007

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phdt........17k&link_type=abstract

Journals

Proquest Dissertations And Theses 2007. Section 0026, Part 0606 128 pages; [M.Sc. dissertation].Canada: University of Calgary (

Science

Physics

Type

Scientific paper

Abstract

The population of near-Earth asteroids (NEAs) remains largely undiscovered, particularly those with orbits entirely interior to the orbit of the Earth. A 0.5m Baker-Nunn telescope is being used by the Near-Earth Space Surveillance- Terrestrial (NESS-T) project to search for NEAs. NESS-T targets the north polar region of the sky with a unique capability to discover interior-to-the-Earth's orbit objects (IEOs) by observing over the pole. An inspection of 58 polar search fields resulted in the detection of one known asteroid. The volume of space searched within these fields was estimated to be 0.0302 (-0.0181,+0.0390) AU 3 , giving a spatial density estimate of ~33 objects per AU 3 . An upper limit of 510 ± 70 objects with diameters greater than 1km was set on the IEO population. A simulated survey of IEO space revealed that one IEO should be detected in every ~382 search fields. An IEO search in the polar region of the sky with the Baker-Nunn telescope has potential, provided a significant volume of IEO space can be covered during each observing run.

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