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Published on Jul 9, 2015
Background(as of 2015-07-09) Object: (436724) 2011 UW158 Approximate Diameter: 330 m - 750 m (1082.68 feet to 2460.63 feet)( Absolute Magnitude: H= 19.5 ) Orbit Type: Amor [PHA] (JPL listed it as an Apollo, MPC list as an Amor) On the Sentry Risk Table: NO ( Removed 2011-11-17 08:50 UTC ) On the NEODyS CLOMON2 risk page: NO First Observed on: 2011-10-25.41860 First Observed By: Pan-STARRS 1 (MPC Code F51) (The Discovery M.P.E.C.: MPEC 2011-U90 : 2011 UW158 ) Last Observed: 2015-07-09.18879 Data-Arc Span: 1353 days (3.70 yr) Number Oppositions : 4 Number of Observations Made: 213 Next Close-Approach: will safely pass Earth on 2015-Jul-19 at a Nominal Distance of 0.016440038277755 (AU), (6.398 Lunar Distance (LD)) or 1,528,197.03 miles (2,459,394.72 KM) Near-Earth Object Human Space Flight Accessible Targets Study (NHATS): YES On the Goldstone Asteroid Schedule: YES, Dates: 2015 July 13-26 ( Needs Astrometry: Yes Physical Observations: Yes) On the Arecibo Asteroid Schedule: YES, Dates: 2015 July 12-17 (Request Optical Astrometry: No, Request Optical Lightcurve:Yes, Request Optical Characterization Yes) and 2015 August 29(Request Optical Astrometry: No, Request Optical Lightcurve:No, Request Optical Characterization No)
Observing Run of (436724) 2011 UW158 on 2015-07-01--On 2015-07-01 I ran a series of 60 -- 15 Second Luminance BIN2 Images on itelescope.net's (TEL T31 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer) at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) and did data reduction on four images. Video Data:The Near-Earth Object (436724) 2011 UW158 on 2015-07-09 From from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 56 -- 15 Second Luminance BIN2 Images using iTelescope.net's (Telescope T31) from 2015-07-09 10:26 UTC to 10:58 UTC