SCIENCE GOALS&OBJECTIVES THIS PROJECT WILL USE LONG-TERM COMET AND SMALL BODY PHOTOMETRIC ARCHIVES TO UNDERSTAND LONG- AND SHORT-TERM ACTIVITY AND TO EXPLORE THE VOLATILE DISTRIBUTION IN THESE PRIMORDIAL REMNANTS OF SOLAR SYSTEM PROCESSES. THE INVESTIGATION OF COMET ACTIVITY THROUGHOUT THE ORBIT IS OFTEN DIFFICULT BECAUSE OF THE LONG TIMESCALES AND LACK OF UNIFORM DATASETS. THIS DATA SET WILL BE OF STRATEGIC IMPORTANCE FOR SMALL BODY MISSIONS. SPECIFIC OBJECTIVES INCLUDE: (1) WE WILL DEVELOP THE TOOLS TO INGEST INTO A DATABASE AND ACCESS 30 YEARS OF IMAGING DATA ANCILLARY INFORMATION (OBSERVING LOGS NOTES EPHEMERIDES OBSERVING GEOMETRY CONDITIONS) AND HIGHER ORDER DATA PRODUCTS AS THEY ARE DEVELOPED (LIGHT CURVES COMPOSITE IMAGES RESULTS OF MODELING (DUST-DYNAMICAL MODELS AND THERMAL MODELS OF ACTIVITY) FROM THE DATABASE. (2) WE WILL RUN ALL THE DATA THROUGH OUR IMAGE PIPELINES TO OBTAIN ASTROMETRY AND PHOTOMETRY AS HIGHER ORDER DATA PRODUCTS TO BE STORED IN THE DATABASE AND STORE THIS WITH ORBITAL INFORMATION AT THE TIME OF OBSERVATIONS. (3) WE WILL INCORPORATE COMET PHOTOMETRY FROM THE ATLAS SKY SURVEY AND THE COMET OBSERVATION DATABASE OF AMATEUR COMET BRIGHTNESS OBSERVATION PRO-AM WEBSITE AT THE INSTITUTE FOR ASTRONOMY AND WILL DEVELOP TOOLS THAT WILL ALLOW DATA FROM BOTH DATABASES TO BE QUERIED. (4) WE WILL DEVELOP A SUITE OF NEW TOOLS TO VISUALIZE THE EXISTING DATA FOR EXAMPLE SHOWING WHERE ALONG THE ORBIT OF A COMET THERE EXISTS DATA IN THE DATABASE ROTATION LIGHT CURVES ETC. (5) WE WILL DEVELOP A WEB INTERFACE FOR OUR OBSERVING PLANNING TOOL THAT WILL ALLOW USES TO SELECT TARGETS IN NEED OF OBSERVATION AND OPTIMALLY PLAN THE OBSERVATIONS FOR ANY OBSERVING SITE. (6) ALL TOOLS AND WEB ACCESS TO THE DATA PRODUCTS WILL BE MADE PUBLICLY AVAILABLE. METHODOLOGY PROPOSED OUR TEAM AT THE INSTITUTE FOR ASTRONOMY HAS ACCUMULATED A ~2 TB DATA SET OF CCD IMAGING OBSERVATIONS DURING THE PAST 30 YEARS. THE DATA IN THIS PROGRAM WERE OBTAINED ON 1-10M CLASS TELESCOPES AND FOCUSES ON FAINT COMETS CENTAURS TNOS AND MBCS. DATA FOR COMET 9P/TEMPEL 1 ARE ALREADY IN THE PDS (UNDER REVIEW) AND WE HAVE FUNDING TO ARCHIVE DATA FROM 1997-2011 INTO THE PDS; THE REST WILL BE SUBMITTED UNDER THIS PROGRAM. WE HAVE ALSO DEVELOPED A LARGE DATABASE TO STORE THE DATA AND HIGHER ORDER DATA PRODUCTS LOCALLY AND WE ALREADY HAVE THE COMPUTER SERVER FOR THIS. WE STILL LACK THE TOOLS TO SYSTEMATICALLY INGEST THE DATA TO CREATE THE ANCILLARY PRODUCTS (PHOTOMETRY ASTROMETRY IN ADDITION TO SOME HIGHER ORDER PRODUCTS) TO QUERY THE DATABASE FOR THESE PRODUCTS FROM THE WEB AND TO VISUALIZE THE DATA. THE ATLAS PROJECT AT IFA IS A SYSTEM THAT WILL PATROL THE ENTIRE HAWAII NIGHT SKY TWICE PER NIGHT TO LOOK FOR HAZARDOUS NEOS. IT WILL ALSO SECURE OBSERVATIONS OF BRIGHT COMETS WHICH WE WILL USE TO CREATE A DATABASE OF FULLY CALIBRATED COMET LIGHT CURVES. IN A COMPLEMENTARY EFFORT A TEAM OF OBSERVERS AT THE CRNI VRH OBSERVATORY (0.6M TELESCOPE) HAS BEEN CONDUCTING AN INTENSIVE OBSERVING CAMPAIGN OF BRIGHT COMETS SINCE 1989 (WWW.COBS.SI). LIKE THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS THIS SERVICE HAS ATTRACTED THE AMATEUR OBSERVING COMMUNITY AND THERE ARE CURRENTLY ~130 MEMBERS WHO ACTIVELY REPORT OBSERVATIONS. WE WISH TO LINK THE TWO DATABASES TOGETHER TO ENABLE SCIENCE INVESTIGATIONS FOR COMETS OVER THEIR ORBITS. WE WILL ALSO USE THIS DATASET AS A TEST BED FOR DEVELOPMENT OF DATA VISUALIZATIONS TO BE EXPLORED IN A 3D CYBERCANOE VISUALIZATION FACILITY BEING DEVELOPED BY COI JASON LEIGH. RELEVANCE TO PDART PROGRAM THIS PROGRAM SUPPORTS GENERATION OF HIGHER-ORDER DATA PRODUCTS ARCHIVING DATA SETS AND PRODUCTS THE CREATION OF DATABASES AND THE DEVELOPMENT OF SOFTWARE TOOLS. WE PROPOSE TO DEVELOP TOOLS TO ACCESS DATA AND CREATE HIGHER ORDER DATA PRODUCTS FROM A 30-YEAR DATABASE OF CCD OBSERVATIONS OF COMETS AND TO FACILITATE INGESTION OF ANY NEWLY ACQUIRED DATA INTO THE PDS.
$1,069,228FY2020National Aeronautics and Space AdministrationNASA
University Of Hawaii, Honolulu