Background (as of 2015-06-20)
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 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
First Observed By: Pan-STARRS 1 (MPC Code F51) (The Discovery M.P.E.C.: MPEC 2011-U90 : 2011 UW158 )
Last Observed: 2015-06-20
Data-Arc Span: 1334 days (3.65 yr)
Number Oppositions : 4
Number of Observations Made: 185
Next Close-Approach: 2015-Jul-19, Nominal Distance (AU): 0.016439695228839, (6.398 Lunar Distance (LD)) or 1,528,165.141 miles (2,459,343.401 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 2015-06-20
On 2015-06-20 I ran a series of 30 -- 60 Second Luminance BIN2 Images on itelescope.net's (TEL T9 0.32-m f/9.3 Ritchey-Chretien + CCD + f/7.4 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 2015-06-20 From from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 30 -- 60 Second
Luminance BIN2 Images using itelescope.net's
(TEL T9 0.32-m f/9.3 Ritchey-Chretien + CCD + f/7.4 focal reducer) from 2015-06-20 10:00 UTC to 10:43 UTC
(c) Steven M. Tilley [ Ссылка ]
