!  File:  4894C.PROP
!  Database:  PEPDB
!  Date:  23-FEB-1994:08:32:16

coverpage:

  title_1:         OBSERVATIONS OF MINOR PLANETS AT CROSSING POINTS
    title_2:       PART 1, CYCLE 3, HIGH
    sci_cat:       SOLAR SYSTEM
    sci_subcat:    MINOR PLANETS
    proposal_for:  GTO/AST
    cont_id:       1014
    pi_fname:      WILLIAM
    pi_mi:         H.
    pi_lname:      JEFFERYS
    pi_inst:       UNIVERSITY OF TEXAS AT AUSTIN
    pi_country:    USA
    hours_pri:     0.67
    num_pri:       1
    fgs:           Y
    time_crit:     Y
! end of coverpage

abstract:

    line_1:        Observations of moving solar system objects in POS mode with
    line_2:        the FGSs have the potential of improving the angular accuracy
    line_3:        of such measurements by an order of magnitude over ground-based
    line_4:        measurements.  Such measurements would provide the most accurate
    line_5:        plate scale determination for HST, as well as improve the
    line_6:        determination of the motions of such objects for both orbital
    line_7:        and solar system gravity field determinations.
    line_8:        The first attempt at the Plate Scale measurement failed
    line_9:        to acquire fine lock on the minor planet and reference stars
    line_10:       because of a shortening of the Course Track walkdown to the
    line_11:       point where the Interferometer transfer function of the FGS
    line_12:       was missed entirely.
    line_13:       This observation is designed to demonstrate the ability of the
    line_14:       FGS to lock onto an asteroid with Fine Lock, and track it,
    line_15:       using only two orbits of GTO time allocated by the AST for
    line_16:       Minor Planet work already.  Further minor planet observations
    line_17:       with the FGSs is contingent on the outcome of this test.

!
! end of abstract

general_form_proposers:

  lname:           JEFFERYS
    fname:         WILLIAM
    title:         DR.
    mi:            H.
    inst:          UNIVERSITY OF TEXAS AT AUSTIN
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        2
    section:       1
    line_1:        Observations of moving solar system objects in POS mode with
    line_2:        the FGSs have the potential of improving the angular accuracy
    line_3:        of such measurements by an order of magnitude over ground-based
    line_4:        measurements.  Such measurements would provide the most accurate
    line_5:        plate scale determination for HST, as well as improve the
    line_6:        determination of the motions of such objects for both orbital
    line_7:        and solar system gravity field determinations.
    line_8:        The first attempt at the Plate Scale measurement failed
    line_9:        to acquire fine lock on the minor planet and reference stars
    line_10:       because of a shortening of the Course Track walkdown to the
    line_11:       point where the Interferometer transfer function of the FGS
    line_12:       was missed entirely.
    line_13:       This observation is designed to demonstrate the ability of the
    line_14:       FGS to lock onto an asteroid with Fine Lock, and track it,
    line_15:       using only two orbits of GTO time allocated by the AST for
    line_16:       Minor Planet work already.  Further minor planet observations
    line_17:       with the FGSs is contingent on the outcome of this test.

!

  question:        3
    section:       1
    line_1:        Observations will be made with the FGSs in POS mode.
    line_2:        1 Obs group will consist of one observation of the minor planet
    line_3:        followed by two reference stars. (3min/mpobs,1min/ref-star)
    line_4:        The FES-time will be changed from one group to the next.
    line_5:        The orbits include redundancy incase of LOL.  The first orbit
    line_6:        will test 0.2 and 0.4 second FES times.  The second orbit
    line_7:        will test 0.4 and 0.8 second FES times.  If both orbits succeed
    line_8:        we will be able to determine the plate scale.

!

  question:        4
    section:       1
    line_1:        This observation is preparatory to the Solar System Astrometry
    line_2:        GTO program.

!

  question:        5
    section:       1
    line_1:        This observation is time critical, based on asteroid size,
    line_2:        magnitude, speed and direction of motion through the pickle,
    line_3:        reference and guidestar availability, and many other factors.

!

  question:        7
    section:       1
    line_1:        The data will be reduced with the AST pipeline, and analysed
    line_2:        using AST orbital software.

!

  question:        8
    section:       1
    line_1:        for further information contact Paul Hemenway,
    line_2:        University of Texas, Astronomy Department
    line_3:        paul@astro.as.utexas.edu,  (512)471-3431.

!
!end of general form text

general_form_address:

  lname:           HEMENWAY
    fname:         PAUL
    mi:            D
    title:         DR.
    category:      CON
    inst:          UNIVERSITY OF TEXAS AT AUSTIN
    addr_1:        DEPARTMENT OF ASTRONOMY
    addr_2:        UNIVERSITY OF TEXAS AT AUSTIN
    city:          AUSTIN
    state:         TX
    zip:           78712
    country:       USA
    phone:         (512)471-3431

!

  lname:           JEFFERYS
    fname:         WILLIAM
    mi:            H.
    title:         DR.
    category:      PI
    inst:          UNIVERSITY OF TEXAS AT AUSTIN
    addr_1:        DEPARTMENT OF ASTRONOMY
    addr_2:        UNIVERSITY OF TEXAS AT AUSTIN
    city:          AUSTIN
    state:         TX
    zip:           78712
    country:       USA
    phone:         (512)471-1455

!
! end of general_form_address records

fixed_targets:

    targnum:       10
    name_1:        MP-POINTING
    descr_1:       J; 701
    pos_1:         RA = 15H 37M 55.559S +/- .008S,
    pos_2:         DEC = -20D 15' 05.512" +/- .008"
    equinox:       J2000

!

    targnum:       20
    name_1:        MPREF1-REF
    descr_1:       J; 701
    pos_1:         RA = 15H 38M 19.958S +/- .008S,
    pos_2:         DEC = -20D 05' 03.588" +/- .008"
    equinox:       J2000
    fluxnum_1:     1
    fluxval_1:     V = 14.56

!

    targnum:       30
    name_1:        MPREF2-REF
    descr_1:       J; 701
    pos_1:         RA = 15H 37M 59.431S +/- .008S,
    pos_2:         DEC = -20D 03' 53.604" +/- .008"
    equinox:       J2000
    fluxnum_1:     1
    fluxval_1:     V = 14.77

!
! end of fixed targets

solar_system_targets:

  targnum:         40
    name_1:        MP1340
    descr_1:       ASTEROID 1340
    lev1_1:        TYPE=ASTEROID,
    lev1_2:        A=3.1712310, E=0.1427984,
    lev1_3:        I=0.42036, O=345.29475,
    lev1_4:        W=226.07545, M=250.88876,
    lev1_5:        EPOCH=24-MAY-91:00:00:00,
    lev1_6:        EQUINOX=B1950

!
! end of solar system targets

! No generic target records found

exposure_logsheet:

    linenum:       100.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MP-POINTING
    config:        S/C
    opmode:        POINTING
    aperture:      V1
    num_exp:       0
    time_per_exp:  0.0S
    req_1:         ORIENT -73.52D +/- 0.3D;
    req_2:         SEQ 100-112 NO GAP;
    req_3:         SAME POS FOR 101-112 AS 100

!

    linenum:       101.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.2,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       102.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.2,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       103.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.2,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       104.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       105.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       106.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       107.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       108.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       109.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       110.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.2,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       111.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.2,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       112.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS1
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.2,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       200.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MP-POINTING
    config:        S/C
    opmode:        POINTING
    aperture:      V1
    num_exp:       0
    time_per_exp:  0.0S
    req_1:         ORIENT -73.53D +/- 0.3D;
    req_2:         SEQ 200-212 NO GAP;
    req_3:         SAME POS FOR 201-212 AS 200

!

    linenum:       201.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       202.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       203.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       204.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.8,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       205.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.8,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       206.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.8,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       207.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.8,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       208.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.8,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       209.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.8,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       210.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MP1340
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  3M
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       211.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF1-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       212.000
    sequence_1:    DEFINE
    sequence_2:    MP-OBS2
    targname:      MPREF2-REF
    config:        FGS
    opmode:        POS
    aperture:      3
    sp_element:    F583W
    num_exp:       1
    time_per_exp:  51.2S
    param_1:       FES-TIME=0.4,
    param_2:       NULL = NO,
    param_3:       LOCK = FINE,
    param_4:       DATA-RATE=32,
    param_5:       ACQ-MODE = SEARCH,
    param_6:       ACQ-DIST = 15

!

    linenum:       300.000
    sequence_1:    USE
    sequence_2:    MP-OBS1
    req_1:         AT JD2449109.81 +/- .125D;
    req_2:         CYCLE 3

!

    linenum:       400.000
    sequence_1:    USE
    sequence_2:    MP-OBS2
    req_1:         AFTER 300 BY .6D +/- .1D;
    req_2:         CYCLE 3

!
! end of exposure logsheet

! No scan data records found