0 Assigned ID: 990 ----- Attempting Submission 1 (Fri Apr 08 23:17:32 GMT 2016) ----- HST Phase I Proposal 990 (Psyche_Cycle24.apt) successfully submitted. Receipt: # 990-1 When I attemp to run the Visit Planner, I receive the following warning: Warning (Visit Planner) Target PSYCHE: There is no need or capability to test the scheduling of observations of moving targets in Phase I. This warning will go away the next time the proposal is loaded. If this needs to be corrected, please let me know and I will gladly run the Visit Planner with additional instructions on how to do so. COS FUV PSA science exposures with extended targets have special calibration limitations. See "Errors and Warnings" for more details. COS FUV PSA science exposures with extended targets have special calibration limitations. See "Errors and Warnings" for more details. 0 ----- Attempting Submission 1 (Wed Jul 20 02:37:12 GMT 2016) ----- ----- Attempting Submission 2 (Tue Oct 18 22:03:30 GMT 2016) ----- The Proposal errors are with regards to the COS observations. We use the offset of .5" to account to avoid the gain-sag region of the detector. Psyche's UV Reflectance Spectra: Exploring the origins of the largest exposed-core metallic asteroid (16) Psyche is the largest of the M-class asteroids, and is presumed to be the exposed core of a differentiated asteroid stripped of its mantle through hit-and-run collisions. However, other origins for Psyche have been proposed, including that it formed from a highly-reduced, metal rich material in the inner solar system or that its surface is olivine that has been space weathered. If (16) Psyche is an exposed core, then studying its properties enhances our understanding of the cores of all terrestrial planets, including the Earth's. If it accreted in the inner part of the solar system and was later injected into the asteroid belt, then Psyche sheds light on the conditions and subsequent evolution of the early solar system. Lastly, if Psyche is weathered olivine, then olivine may be more abundant in the solar system than currently measured, rectifying the so-called "Great Dunite Shortage". Our program to obtain high-resolution UV spectra of Psyche with the COS G140L mode and the STIS NUV MAMA G230L mode to measure spectral signatures between 90 - 315 nm is designed to distinguish between the 3 hypothesized cases. These observations will enable identification of absorption bands, especially Fe-O charge transfer bands and will be sensitive to "spectral blueing" that occurs at UV wavelengths for space-weathered objects. When combined, the presence of these UV features, or not, provides a novel test of Psyche formation theories. We plan to observe (16) Psyche with two visits composed of two orbits each, with each pair of orbits dedicated to FUV and NUV spectral albedo measurements, respectively. The COS G140L mode centered at 128 nm will be used to obtain high-resolution spectra at wavelengths between ~90 - 205 nm, and would produce the first FUV spectrum of Psyche. The STIS 1st order NUV MAMA G230L mode with 52 x 0.2 slit will be used to obtain NUV spectra for the wavelength range 165 - 310 nm. We will alternate one bandpass per orbit, in two orbits per visit (FUV then NUV). During each visit, we will acquire two 1200-sec COS G140L exposures and two 1400-sec STIS NUV MAMA G230L exposures. We plan to schedule the visits so that the hemisphere viewed with each bandpass (mode) is separated by as close to 180 degrees as possible, for an asteroid with a 4.196-hour rotation period. Psyche's position will be offset in the 2.5-arcsec aperture by 0.5 arcsec in the COS observations in order to distinguish between signal from Psyche versus extended emissions from the geocorona + sky background. Psyche is offset toward the bottom of the aperture to avoid gain-sagged regions located higher on the detector. The empty pixels in the COS field of view in the detector rows adjacent to the Psyche spectrum for each observation are used to simultaneously measure the geocorona and sky background features. TIME-TAG mode will be used for both COS and STIS MAMA datasets. An essential requirement is to capture (16) Psyche within 4 weeks of opposition (March 3, 2017) to maximize both the size of the asteroid and also the amount of time in Earth's shadow, reducing the FUV Lyman-alpha background from terrestrial airglow from ~10-15 kR to ~2.5-4 kR. Solar System 3 false true false false false false SUPPORTED SOLAR SYSTEM YES ASTEROID Large, M-type asteroid in the asteroid belt TYPE=ASTEROID,A=2.920561880671045,E=.1382408738943603,I=3.093366819603944,O=150.4660463936781,W=229.1191158619876,M=335.4933059174967,EQUINOX=J2000,EPOCH=01-JAN-2000:00:00:00,EpochTimeScale=TDB EARTH COS/FUV Spectroscopic No No G140L 1280 STIS/NUV-MAMA Spectroscopic No No G230L 2376 Timing link suitability includes constraints ([02 After 01 by 0.3 to 0.3 days] [03 After 01 by 0.6 to 0.6 days] [04 After 01 by 0.9 to 0.9 days]) The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1490013582000 144.49860492806908 (Tic-Visit :proposal-id 14609 :visit-id "01" :proposal-version -1 :trans-version "20160601" :date "13-Oct-2016 17:19:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 34976 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14609 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14609 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 Timing link suitability includes constraints ([02 After 01 by 0.3 to 0.3 days]) The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. The timing of the visit is meant to view the hemisphere of Psyche nearly 180 degrees from the Visit 1 observations. Psyche's orbit is ~4.1 hours. (Tic-Visit :proposal-id 14609 :visit-id "02" :proposal-version -1 :trans-version "20160601" :date "13-Oct-2016 17:19:40.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 504880 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14609 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14609 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 440 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 Timing link suitability includes constraints ([03 After 01 by 0.6 to 0.6 days]) The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. The timing of the visit is meant to view the hemisphere of Psyche nearly 180 degrees from the Visit 1 observations. Psyche's orbit is ~4.1 hours. 1489944898000 134.9532025707013 (Tic-Visit :proposal-id 14609 :visit-id "03" :proposal-version -1 :trans-version "20160601" :date "13-Oct-2016 17:19:42.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 34976 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14609 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14609 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 Timing link suitability includes constraints ([04 After 01 by 0.9 to 0.9 days]) The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. The timing of the visit is meant to view the same hemisphere of Psyche as the Visit 1 observations. Psyche's orbit is ~4.1 hours. 1489658706000 103.28783348999599 (Tic-Visit :proposal-id 14609 :visit-id "04" :proposal-version -1 :trans-version "20160601" :date "13-Oct-2016 17:19:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 504880 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14609 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14609 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 440 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 The timing of the visit is meant to view the same hemisphere of Psyche as the Visit 1 observations. Psyche's orbit is ~4.1 hours. (Tic-Visit :proposal-id 14609 :visit-id "04" :proposal-version -1 :trans-version "20160601" :date "13-Oct-2016 17:19:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 504880 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14609 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14609 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 440 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0