10041( 4) - 03/15/04 09:12 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10041 Version: 4 Check-in Date: 15-Mar-2004 09:10:32 1.Proposal Title: Characterization of a planetary-sized body in the inner Oort cloud ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO/DD 12 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Prof. Michael E. Brown California Institute of Technology ------------------------------------------------------------------------------------ 5. Abstract Our recent discovery of a planetary-sized body in the inner Oort cloud presents the opportunity for quick low-cost survey of this extremely interesting object. With just 2 orbits we will be able to independently determine the size of this object, definitely determine if satellites exist, and search for the shortest timescale photometric variations. As little is known about this body, it is difficult to predict what results will come from these observations, but it is clear that such an object deserves observations at the high resolution that only HST can provide. ------------------------------------------------------------------------------------ Observations Description ------------------------ Two orbits of ACS/HRC exposures using the F435W filter, similar to previous observations of Quaoar. A field star is required within the field of view for PSF. Fixed target coordinates are used because the target object is moving very slowly. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10041( 4) - 03/15/04 09:12 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 K31114A SOLAR SYSTEM, PLANET RA=03H13M51.12S +/- 0.1", J2000 V = 20.7+/-0.1 DEC=+05D45'41.14" +/- 0.1" Coordinate Source: IMAGE_TIED_TO_GSC_FRAME Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 10041( 4) - 03/15/04 09:12 - [ 3] Visit: 01 Visit Priority: Visit Requirements: BETWEEN 16-MAR-2004:00:00:00 AND 16-MAR-2004:08:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 K31114A ACS/HR ACCUM HRC F435W CR-SPLIT=NO 32 120 S C ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 01 1 none none 1 none 1 tbd 01 1 none none 2 none 1 tbd 01 1 none none 3 none 1 tbd 01 1 none none 4 none 1 tbd 01 1 none none 5 none 1 tbd 01 1 none none 6 none 1 tbd 01 1 none none 7 none 1 tbd 01 1 none none 8 none 1 tbd 01 1 none none 9 none 1 tbd 01 1 none none 10 none 1 tbd 01 1 none none 11 none 1 tbd 01 1 none none 12 none 1 tbd 01 1 none none 13 none 1 tbd 01 1 none none 14 none 1 tbd 01 1 none none 15 none 1 tbd 01 1 none none 16 none 1 tbd 01 1 none none 17 none 2 tbd 01 1 none none 18 none 2 tbd 01 1 none none 19 none 2 tbd 01 1 none none 20 none 2 tbd 01 1 none none 21 none 2 tbd 01 1 none none 22 none 2 tbd 01 1 none none 23 none 2 tbd 01 1 none none 24 none 2 tbd 01 1 none none 25 none 2 tbd 01 1 none none 26 none 2 tbd 01 1 none none 27 none 2 tbd 01 1 none none 28 none 2 tbd 01 1 none none 29 none 2 tbd 01 1 none none 30 none 2 tbd 01 1 none none 31 none 2 tbd 01 1 none none 32 none 2 tbd 10041( 4) - 03/15/04 09:12 - [ 4] Summary Form for Proposal 10041 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures HRC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/HRC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO/DD ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 16-MAR-2004 00 00 00 AND 16-MAR-2004 08 00 00 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F435W ------------------------------------------------------------------------------------------------------------------------------------ Target Names K31114A ------------------------------------------------------------------------------------------------------------------------------------