Updated the orbital parameters to JPL's latest values. (Note: this APT pane says "Phase II proposal has not been submitted", which is not correct) ----- Attempting Submission 4 (Wed Mar 09 17:11:33 GMT 2011) ----- COS-GTO: NUV Spectra of Bright Kuiper Belt Objects Part 2 NUV spectra of Kuiper Belt Objects (KBOs) other than Pluto have never yet been obtained. We seek to use COS's sensitivity to determine NUV KBO reflectance slopes and to compare/contrast different KBO spectra by observing two of the brightest, Makemake (2005 FY9) and Haumea (2003 EL61), across the NUV band. These particular KBOs are known to have some distinctive characteristics, prominently showing solid methane (Makemake) and water ice (Haumea) absorption in near-IR spectra. Haumea is also unique for its elongated shape; its rapid, 3.9-hour rotation period; and the presence of two moons.
Observe KBO Haumea (2006 EL61) for two orbits, obtaining FUV spectra with G230L. Use longest effective wavelength coverage setting (3000Å). Single grating will also catch lightcurve variations of this 3.9-hour rotator with a double-peaked lightcurve. SOLAR SYSTEM 12 false 0.0 0.0 false false false false SUPPORTED SOLAR SYSTEM orbital parameters from JPL Small-Body Database on 2011/3/08 (Solution date 2011-Feb-22) Formal errors in sky coordinates through Cyle 18: <= 0.4" (3 sigma), from JPL Horizons ephemeris generator, http://ssd.jpl.nasa.gov/horizons.cgi ASTEROID ASTEROID Haumea (2003 EL61) TYPE=ASTEROID,A=42.99507207306954,E=.1981371235542279,I=28.21833301116119,O=122.0522652259027,W=239.880877705018,M=203.9675600150349,EQUINOX=J2000,EPOCH=23-JUL-2010:00:00:00 F(2650)=9.0E-17 EARTH COS/NUV Spectroscopic No No G230L COS/NUV Spectroscopic No No G230L COS/NUV Spectroscopic No No G230L COS/NUV Spectroscopic No No G230L COS/NUV Spectroscopic No No G230L COS/NUV Spectroscopic No No G230L Using ephemeris for target 12037-01-KBO-HAUMEA ephemeris data for target 12037-01-KBO-HAUMEA does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.182 to 12.061. ephemeris interval: 11.059 to 13.060 The scheduling data was generated by CASM 19.0. CASM was run in Phase II mode. /private/var/folders/Zt/ZtFEH9h9HAyJrkkbCiEkwE+++TI/-Tmp-/OPVisit1011438681864056136.xml (Tic-Visit :proposal-id 12037 :visit-id "01" :proposal-version -1 :trans-version "20100902" :date "09-Mar-2011 11:08:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "32" :si-bright-earth-limb-angle 20.0 :data-volume 261040 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12037 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12037 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2880 :al-overhead-at-end 0 :internal-dur-at-end 116 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3234 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12037 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3012 :al-overhead-at-end 0 :internal-dur-at-end 428 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3234 :pcs-gap 0 ) true 2 0 simulated in ETC COS.A230410, as solar spectrum with effective mV = 17.9, 0.5 magnitudes dimmer in longer NUV wavelengths relative to visible. acquisition S/N = 40 is prohibitive, so imaging is relaxed to achieve S/N = 30. simulated in ETC, COS.A331124, assuming effective m_V=18.4 point source with solar spectrum (Kurucz G2V) and average airglow. Calculated buffer time: 2/3 of 7400s