STARDUST 20 Nov 2003CERR - R. Newburn1 of 5 STARDUST Project CRITICAL EVENTS READINESS REVIEW COMET P/WILD 2 ENCOUNTER Science Operations Ray Newburn JPL: AM / PM LMA:MSA :00 AM - 05:00 PM PST 20 Nov 2003

STARDUST 20 Nov 2003CERR - R. Newburn2 of 5 Cometary and Interstellar Dust Analyzer (CIDA) –Prof. Jochen Kissel, Max Planck Institute, Germany –On Giotto, PHOBOS 88, CONTOUR, Rosetta, Deep Impact –Time of Flight Dust Particle Mass Spectrometer - Interstellar and Wild 2 Approach/ Flyby Dust Flux Monitor Instrument (DFMI) –Dr. Tony Tuzzolino, University of Chicago –On VEGA, Cassini –Determines Dust Size and Spatial Distribution - Flyby only High Rate Science (Radio Science & High Rate Attitude Data) –Dr. John Anderson, JPL, and Dr. Ben Clark, LMA –Uses Radio System for Navigation and Attitude Control System Telemetry –Places Limits on Large Particle Masses and Total Dust Column S/C Flew Through Navigation Camera (NAVCAM) –Dr. Ray Newburn, JPL (Retired) –Flight Parts from Cassini, Voyage, DS1,... –Dust Production and Spatial Distribution During Approach and Nucleus Images During Flyby Science Instruments / Experiments

STARDUST 20 Nov 2003CERR - R. Newburn3 of 5 Cometary and Interstellar Dust Analyzer (CIDA) –Operating in Cruise Mode Since Launch when Power Available –Operated in Encounter Mode at Annefrank –Currently On, Will Switch to Encounter Mode During Flyby Dust Flux Monitor Instrument (DFMI) –Operated in Cruise Mode for 6 Months After Launch Until Power Cycle Problem –Operated for 35 minutes During Annefrank Flyby FSW Will Shut DFMI Down if Power Cycling Starts –Currently Off, Will Switch to Encounter Mode for 30 Minutes During Flyby High Rate Science (Radio Science & High Rate Attitude Data) –Radio Navigation (during Comm Sessions) and AACS On Since Launch –On During Annefrank Flyby –AACS Will Switch From 1 to 10 Hz Telemetry Rate During Flyby Navigation Camera (NAVCAM) –Taken ~ 500 Images Since Launch (Star and Cal Lamp Calibration, Lunar and Annefrank Images) –Contamination Cleaned with Recent Heatings –On During Annefrank Flyby w/ 72 Successful Images –Currently On for Optical Nav and Coma Monitoring –Will Switch to Nucleus Tracking During Flyby CIDA, DFMI, NAVCAM and SPICE Kernel Data Delivered to PDS (Multiple Deliveries) Science Instruments Status

STARDUST 20 Nov 2003CERR - R. Newburn4 of 5 Cometary and Interstellar Dust Analyzer (CIDA) –No Relevant ISA’s –Observing Cometary Dust During Flyby is First Time Event Dust Flux Monitor Instrument (DFMI) –No Relevant ISA’s –Observing Cometary Dust During Flyby is First Time Event High Rate Science (Radio Science & High Rate Attitude Data) –No relevant ISA’s –Observing Cometary Dust During Flyby is First Time Event Navigation Camera (NAVCAM) –Tracking Nucleus Through Periscope is First Time Event Extensive Characterization Performed with Final Characterization of Periscope to be Completed Early December –Last Cal Lamp Image Unsuccessful in Early November (ISA Open) Probably Related to Solar Flare Repeat of Cal Lamp Images is Under Consideration Before Encounter Cal Lamp Images Will Be Taken After Encounter Needed to Produce Improved Photometric Observation Accuracy Science Instrument ISA’s / First Time Events / Concerns

STARDUST 20 Nov 2003CERR - R. Newburn5 of 5 Wild 2 is Behind the Sun Since Spring, 2003 –Limited Photometric Data Taken as Wild 2 Just Started to Become Active –Limited Astrometric Data Used to Update Predicted Position by 1,000 km Will Become Observable in late-December in Early Morning before Sunrise –Need at Least 1 Good R-Band Photometric Observation Used to Compared to Model Prediction and Previous Apparitions Ray Newburn, JPL, Responsible for Interface and Data Processing –Need at Least 1 Good Astrometric Observation Used to Validate Current Ephemerides Bill Owen and Steve Chesley, JPL, Responsible for Interface and Processing –Sliding Springs, Keck, Mauna Kea, Table Mountain, Lowell, USNO, U of TX Observatories Committed to Support STARDUST in Late-December –Data Processing Interfaces and Software Exist and Used to Produce Current Models Will be used Together with NAVCAM Images up to ~E-3d in Decision Process to Select Flyby Distance –Currently at 300 km to Balance Science and Spacecraft Risk –Requires NASA, JPL, LMA Review to Change Target Distance > 50 km Ground-Based Observing Program