NOAO >   Observing Info >   Approved Programs >   2010A-0074

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Proposal Information for 2010A-0074


PI: Mark Trueblood, NOAO, mtrueblood@noao.edu
Address: NSTC, 950 N. Cherry Ave, Tucson, AZ 85719, USA

CoI: Robert Crawford, Rincon Ranch Observatory
CoI: Larry Lebofsky, University of Arizona

Title: Extended Follow-up of Near Earth Objects

Abstract: Recently-discovered Near Earth Objects (NEOs) will be observed using the KPNO 2.1-m telescope to add astrometric observations at arcs of 50 to 80 days from discovery. These \em extended follow-up \em observations place strong constraints on the orbital solution and will greatly reduce the position uncertainty at next opposition. On any night during 2010A, many NEOs discovered 50 to 80 days before will be observable in the range 21 < V < 23. We will place the highest priority on Virtual Impactors (VIs) and Potentially Hazardous Asteroids (PHAs). Among 78 objects for which the NEODyS system estimates a non- zero risk of Earth impact, all but 12 are categorized as effectively lost. Thus, 85% of the objects that are the reason for the discovery surveys must be re-discovered and linked to past observations before the impact risk can be reliably assessed. By creating an extended arc, we will significantly reduce the probability that new discoveries will also become lost.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2010A-0074

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