0 Assigned ID: 402 ----- Attempting Submission 1 (Fri Apr 10 08:00:06 GMT 2015) ----- HST Phase I Proposal 402 (Polishook_Asteroids_HST_Cyc23.apt) successfully submitted. Receipt: # 402-1 ----- Attempting Submission 2 (Fri Apr 10 14:21:59 GMT 2015) ----- HST Phase I Proposal 402 (Polishook_Asteroids_HST_Cyc23.apt) successfully submitted. Receipt: # 402-2 INVALID GS ACQ SCENARIO SPECIAL REQUIREMENT INVALID GS ACQ SCENARIO SPECIAL REQUIREMENT New version with post-FLASH and new Pattern -517461988 ----- Attempting Submission 1 (Wed Jul 22 15:08:33 GMT 2015) ----- ----- Attempting Submission 2 (Tue Aug 25 21:11:00 GMT 2015) ----- we have chosen our exposure times so that the primary asteroids themselves do not saturate in a single exposure. We accept the warning and proceed accordingly. Establishing an evolutionary sequence for disintegrated minor planets The exciting HST discovery of the asteroid P/2013 R3 disintegrating into multiple ~100 meter-size bodies (Jewitt et al. 2014) gave us a first "live" glimpse of the formation of a multiple system. The R3 event is explained by the rotational-disruption mechanism while other causes have been rejected. It is clear that rotational-disruption events contribute to the overall size-frequency distribution of asteroids and are related to the diversity of observed binary and multi-component systems, although different models of disruption have been suggested. We aim to determine if R3-like events are rare by using HST's WFC3/UVIS to observe 6 asteroids known to have recently split (~10^5-10^6 yr) into at least two objects by the rotational-disruption mechanism. With HST we will search for additional bodies orbiting the larger member of these disrupted asteroid pairs. Finding satellites around known disrupted asteroids will suggest that multi-body disintegration processes are frequent and relevant to binary formation. A null-result will suggest that disintegration events like that of R3 are rare. In addition, both positive or null results will constrain the size distribution of the remnants of rotational-disruption events and will provide a direct probe of asteroids' internal structure and strength. The goal is to detect satellites around asteroids. Each visit to a target consists of 12 exposures of 150 sec each using a spiral dither pattern. Careful characterization of the PSF is essential for resolving faint, close-in companions. The exposures will track at the non-sidereal rates of the asteroid. Dithering between exposures and sets will mitigate the impact of hot pixels and other fixed pattern noise. This observing sequence has been optimized in the APT, minimizing overhead, and will fit within a visibility window of a single orbit. We need to check the fields for background field stars when the HST windows are selected before they are actually scheduled. We limit observations to short heliocentric distance and avoid the galactic equator. we change the filters according to the object magnitude, while fixing the exposure times and sequences using the following table: Vmag range filter post-FLASH reduce exptime by >=17.6 F475X 6 e 6 sec 17.1 to 17.5 F475W 9 e 6 sec 16.2 to 17 F850LP 11 e 7 sec 15.4 to 16.1 F336W 12 e 7 sec Solar System 12 false false false false false false SUPPORTED SOLAR SYSTEM NO ASTEROID ASTEROID 2110 TYPE=ASTEROID,A=2.198280830101407,E=0.1774794495040591,I=1.129419708617657,O=140.4369933934491,W=192.5865100023737,M=106.8921178887146,EQUINOX=J2000,EPOCH=11-FEB-2009:00:00:00,EpochTimeScale=UTC EARTH SOLAR SYSTEM NO ASTEROID ASTEROID 5026 TYPE=ASTEROID,A=2.376878009740429,E=0.2423956451833642,I=4.290177239935781,O=304.8602422548554,W=16.97696045339897,M=71.84665036892254,EQUINOX=J2000,EPOCH=20-APR-2010:00:00:00,EpochTimeScale=TDT EARTH SOLAR SYSTEM NO ASTEROID ASTEROID 6070 TYPE=ASTEROID,A=2.3883408962882,E=0.210587042488547,I=3.130958931019846,O=84.00955757576497,W=292.5320250476903,M=328.7191634237433,EQUINOX=J2000,EPOCH=13-JUL-2009:00:00:00,EpochTimeScale=UTC EARTH SOLAR SYSTEM NO ASTEROID ASTEROID 6369 TYPE=ASTEROID,A=2.29277551419383,E=0.143328621685503,I=5.989425477108043,O=35.57177870334641,W=351.7006988463702,M=222.9511744187058,EQUINOX=J2000,EPOCH=07-APR-2010:00:00:00,EpochTimeScale=UTC EARTH SOLAR SYSTEM NO ASTEROID ASTEROID 8306 TYPE=ASTEROID,A=2.24137775030865,E=0.2205638175239091,I=4.777241148469024,O=208.7882914167977,W=143.1380673827167,M=31.63788924646727,EQUINOX=J2000,EPOCH=15-AUG-2010:00:00:00,EpochTimeScale=UTC EARTH SOLAR SYSTEM NO ASTEROID ASTEROID 10123 TYPE=ASTEROID,A=2.269746422790353,E=0.2057444196861953,I=4.052743634224846,O=76.91396833779066,W=267.5316869651617,M=109.0812040011487,EQUINOX=J2000,EPOCH=21-APR-2009:00:00:00,EpochTimeScale=UTC EARTH WFC3/UVIS Imaging No No F475X WFC3/UVIS Imaging No No F475X WFC3/UVIS Imaging No No F475X WFC3/UVIS Imaging No No F475X WFC3/UVIS Imaging No No F475X WFC3/UVIS Imaging No No F475X POS-TARG DITHER 0.135 LINE false false 3 46.84 WFC3-UVIS-DITHER-LINE-3PT 6 false Using ephemeris for target 14133-01-2110 The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. Date range Jan 6 - Mar 7 Magnitude range 16.41 - 17.32 +- 1/2 amp=0.2. Galaxy lat - 35 - 45 deg Earth dist - 1.58 - 1.72 AU Phase angle 0 - 15 deg 1456271237000 132.81313173275038 (Tic-Visit :proposal-id 14133 :visit-id "01" :proposal-version -1 :trans-version "20150609" :date "26-Aug-2015 11:18:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 54928 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14133 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14133 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2874 :al-overhead-at-end 0 :internal-dur-at-end 97 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0 Using ephemeris for target 14133-02-5026 The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. Date range May 10 - Jul 11 Magnitude range 16.03 - 16.81 +- 1/2 amp=0.3. Galaxy lat - 12 - 22 deg Earth dist - 1.08 - 1.19 AU Phase angle 3 - 11 deg 1463162526000 306.2214024466948 (Tic-Visit :proposal-id 14133 :visit-id "02" :proposal-version -1 :trans-version "20150609" :date "26-Aug-2015 11:18:45.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 54928 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14133 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14133 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2874 :al-overhead-at-end 0 :internal-dur-at-end 97 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0 Using ephemeris for target 14133-03-6070 ephemeris data for target 14133-03-6070 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.300 to 17.152. ephemeris interval: 16.152 to 18.152 The scheduling data was generated by CASM 24.0. CASM was run in Phase II mode. Date range Apr 27 - Jul 6 Magnitude range 16.25 - 18.19 +- 1/2 amp=0.3. Galaxy lat - -10 - -15 deg Earth dist - 1.31 - 1.94 AU Phase angle 1 - 23 deg 1467415812000 6.605119431076304 (Tic-Visit :proposal-id 14133 :visit-id "03" :proposal-version -1 :trans-version "20160322" :date "07-Jun-2016 09:26:18.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 54928 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14133 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14133 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2766 :al-overhead-at-end 0 :internal-dur-at-end 97 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 Using ephemeris for target 14133-04-6369 ephemeris data for target 14133-04-6369 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.300 to 17.089. ephemeris interval: 15.334 to 17.335 The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. Date range Dec 29 - Mar 31 Magnitude range 17.33 - 18.43. Galaxy lat - 51 - 62 deg Earth dist - 1.47 - 1.79 AU Phase angle 4 - 22 deg 1451815548000 282.7023133322953 (Tic-Visit :proposal-id 14133 :visit-id "04" :proposal-version -1 :trans-version "20150609" :date "14-Dec-2015 10:20:12.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 54928 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14133 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14133 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2874 :al-overhead-at-end 0 :internal-dur-at-end 97 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 Using ephemeris for target 14133-05-8306 ephemeris data for target 14133-05-8306 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.300 to 17.152. ephemeris interval: 16.152 to 18.152 The scheduling data was generated by CASM 24.0. CASM was run in Phase II mode. /private/var/folders/ny/y2rfgxpn4k37g754z2ph3gd00001bc/T/OPVisit2902866605717970346.xml Date range Jun 21 - Jul 26 Magnitude range 17.23 - 17.92 +- 1/2 amp=0.1. Galaxy lat - 10 - 15.5 deg Earth dist - 1.09 - 1.18 AU Phase angle 5 - 22 deg (Tic-Visit :proposal-id 14133 :visit-id "05" :proposal-version -1 :trans-version "20160322" :date "17-Jun-2016 18:34:59.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 54928 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14133 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14133 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2874 :al-overhead-at-end 0 :internal-dur-at-end 97 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 Using ephemeris for target 14133-06-10123 ephemeris data for target 14133-06-10123 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.213 to 17.089. ephemeris interval: 15.307 to 16.031 The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. Date range Nov 26 - Jan 10 Magnitude range 17.27 - 17.88. Galaxy lat - 9.9 - 17.9 deg Earth dist - 1.41 - 1.52 AU Phase angle 1 - 18 deg 1448661532000 276.7012962968544 (Tic-Visit :proposal-id 14133 :visit-id "06" :proposal-version -1 :trans-version "20150609" :date "04-Nov-2015 12:11:26.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 54928 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14133 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14133 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2874 :al-overhead-at-end 0 :internal-dur-at-end 97 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0