The first evidence for a possible companion to 2002 GT was acquired in April 2013. The current apparition is the only opportunity to verify or constrain possibly binary configurations for this Near Earth Asteroid before the 2020 arrival of the retargeted Deep Impact spacecraft. Ground-based options for verification have been nearly exhausted at this point. Rapid action is needed before 2002 GT's increasing distance from the Earth precludes any chance of direct confirmation of the presence of a companion. The presence, or not, of a companion, is absolutely essential information for the success of the mission. We are requesting two orbits of HST time as soon as is practical in July 2013. look at asteroid SOLAR SYSTEM Default false false false false false SUPPORTED SOLAR SYSTEM ASTEROID neo TYPE=ASTEROID,A=1.344583026399673,E=0.3348209301937053,I=6.96883353593068,O=201.86898630747860,W=134.97930896643310,M=288.36850047465880,EQUINOX=J2000,EPOCH=03-OCT-2011:00:00:00,EpochTimeScale=UTC EARTH WFC3/UVIS Imaging No No F555W WFC3/UVIS Imaging No No F555W POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 1 false Using ephemeris for target 13502-01-NEO2002GT Timing link suitability includes constraints ([02 After 01 by 1.0 to 1.5 days]) The scheduling data was generated by CASM 21.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13502 :visit-id "01" :proposal-version -1 :trans-version "20121031" :date "10-Jul-2013 16:10:45.0" :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 142608 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13502 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13502 :visit-id "01" :orbit-number 1 :pcs-time 241 :si-vis-utilization 1626 :al-overhead-at-end 0 :internal-dur-at-end 192 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 1 0 Using ephemeris for target 13502-02-NEO2002GT Timing link suitability includes constraints ([02 After 01 by 1.0 to 1.5 days]) The scheduling data was generated by CASM 21.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13502 :visit-id "02" :proposal-version -1 :trans-version "20121031" :date "10-Jul-2013 16:10:35.0" :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 142608 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13502 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13502 :visit-id "02" :orbit-number 1 :pcs-time 241 :si-vis-utilization 1626 :al-overhead-at-end 0 :internal-dur-at-end 192 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 1 0