10801( 6) - 03/02/07 06:49 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10801 Version: 6 Check-in Time: 02-Mar-2007 11:48:59 STScI Edit Number: 3 Title Direct Determination of Kuiper Belt Object Diameters with HST ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 15 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Keith S. Noll Space Telescope Science Institute CoI: Dr. Edmund Nelan Space Telescope Science Institute N CoI: Dr. Anton Koekemoer Space Telescope Science Institute N CoI: Dr. William M. Grundy Lowell Observatory N CoI: Ms. Elizabeth Barker Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract When it comes to fundamental properties of an astronomical object, it is difficult to think of a more fundamental physical property than its size. Because of their distance, objects in the Kuiper Belt are generally too small for their disks to be resolved. The heterogeneous albedo and color of the Kuiper Belt population makes size estimates from observed absolute magnitude highly uncertain. And the long- awaited data from the Spitzer Space Telescope suffers from our ignorance of crucial macro- and micro-physical properties such as spin period, pole orientation, surface roughness, and thermal inertia. We propose to add a new dimension to the measurement of KBO diameters by employing two techniques that will directly measure the diameters of three large KBOs. We expect to obtain diameter measurements with uncertainties of 10% or better and utilize these to validate and cross calibrate the growing web of diameter measurements for KBOs. ------------------------------------------------------------------------------------ Observations Description ------------------------ KBO diameter measurements Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10801( 6) - 03/02/07 06:49 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 5 KBO2005FY9- SOLAR SYSTEM, ASTEROID RA=12H24M37.1400S +/- 0.1", J2000 V = 16.8+/-0.2 FGS-FIXED DEC=+29D45'48.72" +/- 0.1" Reference Frame: ICRS Comments: Target RA and Dec are computed position of asteriod on 2007.073:15:00:00 UT. 10801( 6) - 03/02/07 06:49 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 | TARGET NAME: KBO2005FY9 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID scatnear ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | TYPE=ASTEROID,A=45.569999523,E=0.1576706 | 9,I=28.9977173,O=79.6076492,W=295.547773 | ,M=149.6158021,EPOCH=19-Jul- | 2007,EQUINOX=J2000 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | A_VEL KBO2005FY9 FROM EARTH GT 0.00005 | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 16.8+/-0.2 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 2 | TARGET NAME: KBO90428ORCUS ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID 3:2E ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | TYPE=ASTEROID,A=39.275462007,E=0.2232453 | 9,I=20.5961319,O=268.7354534,W=72.368264 | 9,M=162.9071722,EPOCH=19-Jul- | 2007,EQUINOX=J2000 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 19.1+/-0.2 | | ------------------------------------------------------------------------------------------------------------------------------------ 10801( 6) - 03/02/07 06:49 - [ 4] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 | TARGET NAME: KBO55636 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID scatnear ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | TYPE=ASTEROID,A=43.186994889,E=0.1245596 | 7,I=25.8451701,O=324.540242,W=339.297256 | 5,M=62.4617255,EPOCH=19-Jul- | 2007,EQUINOX=J2000 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 19.5+/-0.2 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 4 | TARGET NAME: KBO2005FY9-FGS ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID scatnear ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | TYPE=ASTEROID,A=45.569999523,E=0.1576706 | 9,I=28.9977173,O=79.6076492,W=295.547773 | ,M=149.6158021,EPOCH=19-Jul- | 2007,EQUINOX=J2000 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | A_VEL KBO2005FY9 FROM EARTH GT 0.00005 | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 16.8+/-0.2 | | ------------------------------------------------------------------------------------------------------------------------------------ 10801( 6) - 03/02/07 06:49 - [ 5] Visit: 01 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 KBO2005FY9 ACS/HRC ACCUM HRC F555W CR-SPLIT=NO 18 95 S ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 1 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 2 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 3 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 4 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 5 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 6 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 7 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 8 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 9 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 10 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 11 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 12 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 13 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 14 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 15 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 16 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 17 none 1 N/A KBO2005FY9 1 ACS/HRC ACCUM HRC F555W none none 18 none 1 N/A 10801( 6) - 03/02/07 06:49 - [ 6] Visit: 02 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 KBO90428ORC ACS/HRC ACCUM HRC F555W CR-SPLIT=NO 18 95 S US ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 1 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 2 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 3 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 4 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 5 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 6 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 7 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 8 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 9 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 10 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 11 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 12 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 13 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 14 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 15 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 16 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 17 none 1 N/A KBO90428ORCUS 1 ACS/HRC ACCUM HRC F555W none none 18 none 1 N/A 10801( 6) - 03/02/07 06:49 - [ 7] Visit: 03 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 KBO55636 ACS/HRC ACCUM HRC F555W CR-SPLIT=NO 18 95 S ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ KBO55636 1 ACS/HRC ACCUM HRC F555W none none 1 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 2 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 3 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 4 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 5 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 6 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 7 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 8 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 9 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 10 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 11 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 12 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 13 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 14 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 15 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 16 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 17 none 1 N/A KBO55636 1 ACS/HRC ACCUM HRC F555W none none 18 none 1 N/A 10801( 6) - 03/02/07 06:49 - [ 8] Visit: 04 Visit Priority: Visit Requirements: PCS MODE FINE; SCHED 70%; BETWEEN 14-MAR-2007:14:10:00 AND 14-MAR- 2007:15:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 KBO2005FY9- FGS TRANS 1 F583W SCANS=10,STEP-SIZE=0.5 1 560 S SEQ 1-3 NON-INT FGS-FIXED ------------------------------------------------------------------------------------------------------------------------------------ 2 KBO2005FY9- FGS TRANS 1 F583W SCANS=10,STEP-SIZE=0.5 1 560 S SAME POS AS 1 FGS-FIXED ------------------------------------------------------------------------------------------------------------------------------------ 3 KBO2005FY9- FGS TRANS 1 F583W SCANS=10,STEP-SIZE=0.5 1 560 S SAME POS AS 1 FGS-FIXED ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ KBO2005FY9-FGS-FIX 1 FGS TRANS 1 F583W none none none none 1 N/A ED KBO2005FY9-FGS-FIX 2 FGS TRANS 1 F583W none none none none 1 N/A ED KBO2005FY9-FGS-FIX 3 FGS TRANS 1 F583W none none none none 1 N/A ED 10801( 6) - 03/02/07 06:49 - [ 9] Visit: 05 Visit Priority: Visit Requirements: PCS MODE FINE; SCHED 70% On Hold Comments: Additional Comments: Visit added by PC to see when visit 4 could schedule, and find the coord of the asteroid on the day that visit is executed. This visit will be withdrawn after visit 4 executes. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 KBO2005FY9- FGS POS 1 F583W 1 1800 S FGS ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ KBO2005FY9-FGS 1 FGS POS 1 F583W none none none none 1 N/A 10801( 6) - 03/02/07 06:49 - [ 10] Summary Form for Proposal 10801 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures HRC 1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/HRC FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM TRANS POS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO SCANS=10 STEP-SIZE=0.5 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PCS MODE FINE; SCHED 70%; BETWEEN 14-MAR-2007 14 10 00 AND 14-MAR-2007 15 00 00; SEQ 1-3 NON-INT; SAME POS AS 1; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F555W F583W ------------------------------------------------------------------------------------------------------------------------------------ Target Names KBO2005FY9 KBO90428ORCUS KBO55636 KBO2005FY9-FGS-FIXED KBO2005FY9-FGS ------------------------------------------------------------------------------------------------------------------------------------