12535( 6) - 28-Aug-2012 13:19:11 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12535 Version: 6 Check-in Time: 28-Aug-2012 13:19:11 STScI Edit Number: 3 Title Orbital Refinement and Characterization of New Horizons KBO candidates ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Susan D. Benecchi Carnegie Institution of Washington Y CoI: Dr. Keith S. Noll NASA Goddard Space Flight Center N CoI: Dr. Scott S. Sheppard Carnegie Institution of Washington N CoI: Dr. Harold A. Weaver The Johns Hopkins University Applied N Physics Laboratory CoI: Dr. John R. Spencer Southwest Research Institute N CoI: Dr. S. Alan Stern Southwest Research Institute N ------------------------------------------------------------------------------------ Abstract The New Horizons (NH) spacecraft is on its way to study the Pluto system during a flyby. After the Pluto encounter, it is planned that the spacecraft will be retargeted to one or more yet-to-be-discovered Kuiper Belt Objects (KBOs) to learn about small KBOs and the Kuiper Belt debris body population. We are actively carrying out dedicated ground-based observations in 2011 and 2012 using large class telescopes to discover a KBO target that will be within the trajectory cone of NH. Unfortunately, the NH trajectory's line of site is within the galactic plane (Sagittarius) making stellar confusion a major problem in detecting and tracking KBOs in this region. HST’s sensitivity, resolution and PSF stability are a significant advantage in these confusion-limited starfields. We are requesting TOO orbits for up to 3 KBOs (2 orbits per KBO) to be triggered in the event that a candidate object is found in the NH trajectory. Objects must be recovered at multiple epochs to determine if their orbits will continue to place the object within the NH trajectory in the future. The observations we propose will also determine if the candidate is binary (~30% probability per candidate) and make a preliminary color determination. ------------------------------------------------------------------------------------ Observations Description ------------------------ We obtain 2-455 second exposures in the F606W filter using a manual dither pattern and 2-640 second exposures in the F814W filter to obtain a color measurement (0.1 magnitude uncertainty) on the NH KBO candidate. All the TOO orbits are planned to take the same set of exposures, the only difference is the actual target. This project imposes no orientation constraints and uses ordinary blind target acquisition. We tracking the object under FGS control, target motion rates are very slow, at most a few arcsec per hour. Real Time Justification ----------------------- Calibration Justification 12535( 6) - 28-Aug-2012 13:19:11 - [ 2] ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12535( 6) - 28-Aug-2012 13:19:11 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 TARGET NAME: VNH0007 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID NewHorizons-Candidate1 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 TYPE=ASTEROID, A=45.92576064, E=0.13552798, I=1.87353, O=209.21519, W=136.94517, M=304.23985, EQUINOX=J2000, EPOCH=19-APR-2011:00:00:00, EpochTimeScale=UTC ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 25.2 +/- 0.5 Ephemeris Center: EARTH ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 4 TARGET NAME: VNH0008 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID NewHorizons-Candidate2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 TYPE=ASTEROID, A=43.99788026, E=0.03856975, I=2.60734, O=231.49086, W=90.10902, M=317.85132, EQUINOX=J2000, EPOCH=19-APR-2011:00:00:00, EpochTimeScale=UTC ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 24.5 +/- 0.5 Ephemeris Center: EARTH ------------------------------------------------------------------------------------------------------------------------------------ 12535( 6) - 28-Aug-2012 13:19:11 - [ 4] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 5 TARGET NAME: VNH0010 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: ASTEROID NewHorizons-Candidate3 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 TYPE=ASTEROID, A=43.15228839, E=0.03596879, I=2.39422, O=154.69962, W=211.72576, M=274.18700, EQUINOX=J2000, EPOCH=19-APR-2011:00:00:00, EpochTimeScale=UTC ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 25.4 +/- 0.5 Ephemeris Center: EARTH ------------------------------------------------------------------------------------------------------------------------------------ 12535( 6) - 28-Aug-2012 13:19:11 - [ 5] Visit: 01 Visit Requirements: BETWEEN 2012.255 AND 2012.256; BETWEEN 2012.257 AND 2012.261; BETWEEN 2012.262 AND 2012.263; BETWEEN 2012.272 AND 2012.274 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 VNH0007 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 2 VNH0007 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0.099, 0.106 S ------------------------------------------------------------------------------------------------------------------------------------ 3 VNH0007 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 4 VNH0007 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0.099, 0.106 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 | ------------------------------------------------------------------------------------------------------------------------------------ VNH0007 1 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S VNH0007 2 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0007 3 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0007 4 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S 12535( 6) - 28-Aug-2012 13:19:11 - [ 6] Visit: 02 Visit Requirements: BETWEEN 2012.255 AND 2012.256; BETWEEN 2012.257 AND 2012.261; BETWEEN 2012.262 AND 2012.263; BETWEEN 2012.272 AND 2012.274; SEQ 01, 02 WITHIN 1 D 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 VNH0007 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 2 VNH0007 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0.099, 0.106 S ------------------------------------------------------------------------------------------------------------------------------------ 3 VNH0007 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 4 VNH0007 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0.099, 0.106 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 | ------------------------------------------------------------------------------------------------------------------------------------ VNH0007 1 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S VNH0007 2 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0007 3 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0007 4 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S 12535( 6) - 28-Aug-2012 13:19:11 - [ 7] Visit: 11 Visit Requirements: BETWEEN 2012.255 AND 2012.256; BETWEEN 2012.257 AND 2012.260; BETWEEN 2012.262 AND 2012.267; BETWEEN 2012.270 AND 2012.273 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 VNH0008 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 2 VNH0008 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0.099, 0.106 S ------------------------------------------------------------------------------------------------------------------------------------ 3 VNH0008 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 4 VNH0008 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0.099, 0.106 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 | ------------------------------------------------------------------------------------------------------------------------------------ VNH0008 1 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S VNH0008 2 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0008 3 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0008 4 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S 12535( 6) - 28-Aug-2012 13:19:11 - [ 8] Visit: 12 Visit Requirements: BETWEEN 2012.255 AND 2012.256; BETWEEN 2012.257 AND 2012.260; BETWEEN 2012.262 AND 2012.267; BETWEEN 2012.270 AND 2012.273; SEQ 11, 12 WITHIN 1 D 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 VNH0008 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 2 VNH0008 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0.099, 0.106 S ------------------------------------------------------------------------------------------------------------------------------------ 3 VNH0008 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 4 VNH0008 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0.099, 0.106 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 | ------------------------------------------------------------------------------------------------------------------------------------ VNH0008 1 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S VNH0008 2 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0008 3 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0008 4 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S 12535( 6) - 28-Aug-2012 13:19:11 - [ 9] Visit: 21 Visit Requirements: BETWEEN 2012.254 AND 2012.255; BETWEEN 2012.261 AND 2012.273 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 VNH0010 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 2 VNH0010 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0.099, 0.106 S ------------------------------------------------------------------------------------------------------------------------------------ 3 VNH0010 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 4 VNH0010 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0.099, 0.106 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 | ------------------------------------------------------------------------------------------------------------------------------------ VNH0010 1 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S VNH0010 2 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0010 3 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0010 4 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S 12535( 6) - 28-Aug-2012 13:19:11 - [ 10] Visit: 22 Visit Requirements: BETWEEN 2012.254 AND 2012.255; BETWEEN 2012.261 AND 2012.273; SEQ 21, 22 WITHIN 1 D 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 VNH0010 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 2 VNH0010 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0.099, 0.106 S ------------------------------------------------------------------------------------------------------------------------------------ 3 VNH0010 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO 1 640 S POS TARG 0, 0 S ------------------------------------------------------------------------------------------------------------------------------------ 4 VNH0010 WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 455 S POS TARG 0.099, 0.106 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 | ------------------------------------------------------------------------------------------------------------------------------------ VNH0010 1 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S VNH0010 2 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0010 3 WFC3/UVI ACCUM UVIS2 F814W none none none none 1 N/A S VNH0010 4 WFC3/UVI ACCUM UVIS2 F606W none none none none 1 N/A S 12535( 6) - 28-Aug-2012 13:19:11 - [ 11] Summary Form for Proposal 12535 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 2012.254 AND 2012.255, BETWEEN 2012.255 AND 2012.256, BETWEEN 2012.257 AND 2012.260, BETWEEN 2012.257 AND 2012.261, BETWEEN 2012.261 AND 2012.273, BETWEEN 2012.262 AND 2012.263, BETWEEN 2012.262 AND 2012.267, BETWEEN 2012.270 AND 2012.273, BETWEEN 2012.272 AND 2012.274, POS TARG 0, 0, POS TARG 0.099, 0.106, SEQ 01, 02 WITHIN 1 D, SEQ 11, 12 WITHIN 1 D, SEQ 21, 22 WITHIN 1 D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names VNH0007, VNH0008, VNH0010 ------------------------------------------------------------------------------------------------------------------------------------