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Recent Results from NEOWISE Amy Mainzer JPL Slide 2 WISE 4 imaging channels covering 3 25 m 40 cm telescope operating atSlide 3 NEOWISE Team PI: Amy Mainzer James Bauer: JPL/IPAC Roc Cutri: IPAC Tommy Grav: PSI Robert Jedicke: IfA Joe Masiero: NPP postdoc JPL staff scientist Bob McMillan: LPI Carrie Nugent: NPP postdoc Rachel Stevenson: NPP postdoc Dave Tholen: IfA Russ Walker: MIRA Ned Wright: UCLA Students: ~15 so far, including Emily Kramer (UCF), Carrie Nugent (UCLA), Jessica Watkins (UCLA) Slide 4 Aug. 5, 2010 Lost 22 m Sept. 29, 2010 Lost all 12 m Sept. 29, 2010 - Feb. 1, 2011 3.4 & 4.6 m only NEOs NEOWISE-discovered NEOs others detected Comets others detected Comets NEOWISE-discovered All other detected objects 1 YEAR NEOWISE SURVEY >158,000 asteroids detected >34,000 new discoveries ~750 NEOs detected 135 new discoveries 150 comets detected 21 comets discovered Slide 5 NEOWISE Science Data Analysis Final release of NEOWISE Post-Cryo survey phase data 5/22/2013 Rerunning WMOPS at lower SNR Test runs at SNR=3.5 yielded 20% more detections, each with 2x more detections/object (10 20) Stacking on all known cataloged objects Creating catalog of physical properties in PDS Slide 6 Near-Earth Asteroid Numbers & Sizes Use well-known sensitivity & uniformity of four band survey to compute total numbers from observed sample 20,500+/-3000 @ 100m vs. prior estimates of 36,000 100,000 >90% of 1 km and larger NEAs have been discovered: Spaceguard goal Mainzer et al. 2011 ApJ 743, 156 break Shallower slope: -1.32+/-0.14 Slide 7 NEOWISE Detections of Small NEOs Smallest NEOs detected by NEOWISE are 8m in diameter Detected in band W2 at 3-4 lunar distances from the spacecraft, so similar objects could be detected if WISE is restarted More in data that havent been identified yet 12 NEOs detected with diameters