!  File:  3346C.PROP
!  Database:  PEPDB
!  Date:  19-FEB-1994:04:16:34

coverpage:

  title_1:         PHYSICS OF ASTEROIDS-FUTURE CYCLES
    sci_cat:       SOLAR SYSTEM
    sci_subcat:    MINOR PLANETS
    proposal_for:  GTO/FOC
    cont_id:       1268
    pi_fname:      RUDOLF
    pi_lname:      ALBRECHT
    pi_inst:       ESA, EUROPEAN COORDINATING FACILITY
    pi_country:    GERMANY, WEST
    pi_phone:      +49-89-320 06 287
    keywords_1:    SOLAR SYSTEM, ASTEROIDS
    hours_pri:     10.00
    num_pri:       16
    time_crit:     X
    pi_position:   DEPUTY HEAD, ST-ECF
! end of coverpage

abstract:

    line_1:        The purpose of the proposed investigation is to detemine the physical
    line_2:        properties of selected asteroids (currently more than 4000 known, mainly between
    line_3:        Mars and Jupiter, diameters ranging up to 10dex3 km).
    line_5:        The asteroid 1 Ceres has a diameter of 1025 km and produces an image of 0.7
    line_6:        arcsec at opposition. We will study it with the FOC F/288 high resolution mode
    line_7:        to determine the absolute diameter (and thus calibrate the asteroid diameter
    line_8:        scales), the irregularities of the body, and the reasons for variations during
    line_9:        its rotation (about 9.1 hours). The surface structure will be resolved to about
    line_10:       10x10 km per pixel, and also studied during rotation. The same will be done for
    line_11:       a number of other asteroids. The position of the rotational pole will be
    line_12:       determined, as well as the sence of rotation.
    line_15:       Several asteroids are suspected to consist not only of one single body, but to
    line_16:       be binary or multiple in nature, or to have satellites. The proposed
    line_17:       observations will provide answers to these questions.
    line_19:       The FOC in F/288 mode will for the first time produce direct images of
    line_20:       asteroids with a resolution sufficient to discern surface details.

!
! end of abstract

general_form_proposers:

  lname:           SCHOBER
    fname:         HANS
    mi:            J.
    inst:          GRAZ UNIVERSITY
    country:       AUSTRIA
    esa:           X

!

  lname:           CALDWELL
    fname:         JOHN
    mi:            J.
    inst:          SPACE ASTROPHYSICS LABORATORY, ISTS
    country:       CANADA

!

  lname:           WEIGELT
    fname:         GERD
    inst:          MPI F. RADIOASTRONOMIE
    country:       GERMANY, WEST
    esa:           X

!

  lname:           KAMPERMAN
    fname:         THEO
    mi:            M.
    inst:          SPACE RESEARCH LABORATORY UTRECHT
    country:       NETHERLANDS
    esa:           X

!

  lname:           ALBRECHT
    fname:         RUDOLF
    inst:          ESA, EUROPEAN COORDINATING FACILITY
    country:       GERMANY, WEST
    esa:           X

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        A) DECONVOLUTION: The goal of these observations is to increase the resolution
    line_2:        of the ST/FOC by image processing techniques. For this purpose exposures
    line_3:        have to be taken with different ST roll angles, spaced as closely as possible
    line_4:        in time.
    line_8:        the rolled exposure can only be taken one orbit after the unrolled exposure.
    line_9:        This time line should allow the determination of the direction of the rotation
    line_10:       and of the pole axis, plus a confirmation of the potometric rotation period.
    line_11:       One of the priority 1 objects shall be observed during cycle 1.

!

  question:        4
    section:       1
    line_1:        Only the FOC  provides the required resolution.

!

  question:        5
    section:       1
    line_1:        Asteroids have to be observed close to opposition. The scheduling of the
    line_2:        observations is therefore closely tied to the ST launch date and to the
    line_3:        availability of the moving target acquisition mode. We expect to work closely
    line_4:        with the schedulers at the ST ScI.

!

  question:        7
    section:       1
    line_1:        Quick-look data analysis will be carried out at the STScI immediately following
    line_2:        the observations.
    line_4:        Final data analysis will be carried out at the European Coordinating Facility,
    line_5:        and at the computer installations of the home institutions of the other
    line_6:        proposers.

!

  question:        10
    section:       1
    line_1:        Our institutions will supply the following resources:
    line_3:        Salary, travel, data analysis facilities, research support, administrative
    line_4:        support, office space.

!

  question:        13
    section:       1
    line_1:        The purpose of this investigation is to determine physical properties of
    line_2:        selected asteroids: diameters, shapes, surface structure, spin axis
    line_3:        orientation, rotation, and possible binary nature.

!
!end of general form text

general_form_address:

  lname:           ALBRECHT
    fname:         RUDOLF
    category:      PI
    inst:          ESA, EUROPEAN COORDINATING FACILITY

!
! end of general_form_address records

! No fixed target records found

solar_system_targets:

  targnum:         1
    name_1:        1-CERES
    descr_1:       ASTEROID 1
    lev1_1:        STD=1(CERES)
    fluxnum_1:     1
    fluxval_1:     V=7.9

!

  targnum:         2
    name_1:        2-PALLAS
    descr_1:       ASTEROID 2
    lev1_1:        STD=2(PALLAS)
    fluxnum_1:     1
    fluxval_1:     V=8.5

!

  targnum:         3
    name_1:        3-JUNO
    descr_1:       ASTEROID 3
    lev1_1:        STD=3(JUNO)
    fluxnum_1:     1
    fluxval_1:     V=9.8

!

  targnum:         4
    name_1:        4-VESTA
    descr_1:       ASTEROID 4
    lev1_1:        STD=4(VESTA)
    fluxnum_1:     1
    fluxval_1:     V=6.8

!

  targnum:         5
    name_1:        7-IRIS
    descr_1:       ASTEROID 7
    lev1_1:        STD=7(IRIS)
    fluxnum_1:     1
    fluxval_1:     V=9.4

!

  targnum:         7
    name_1:        10-HYGIEA
    descr_1:       ASTEROID 10
    lev1_1:        STD=10(HYGIEA)
    fluxnum_1:     1
    fluxval_1:     V=10.6

!

  targnum:         9
    name_1:        15-EUNOMIA
    descr_1:       ASTEROID 15
    lev1_1:        STD=15(EUNOMIA)
    fluxnum_1:     1
    fluxval_1:     V=9.6

!

  targnum:         10
    name_1:        16-PSYCHE
    descr_1:       ASTEROID 16
    lev1_1:        STD=16(PSYCHE)
    fluxnum_1:     1
    fluxval_1:     V=10.6

!

  targnum:         11
    name_1:        532-HERCULINA
    descr_1:       ASTEROID 532
    lev1_1:        STD=532(HERCULINA)
    fluxnum_1:     1
    fluxval_1:     V=10.4

!
! end of solar system targets

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    sequence_1:    DEF
    sequence_2:    DECON
    targname:      #
    config:        FOC/96
    opmode:        ACQ
    aperture:      512X512
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    fluxnum_1:     1
    priority:      #
    req_1:         INT ACQ FOR 2

!

    linenum:       2.000
    sequence_1:    DEF
    sequence_2:    DECON
    targname:      #
    config:        FOC/288
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    s_to_n:        30
    fluxnum_1:     1
    priority:      #

!

    linenum:       3.000
    sequence_1:    DEF
    sequence_2:    DECON
    targname:      #
    config:        FOC/288
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    s_to_n:        30
    fluxnum_1:     1
    priority:      #
    req_1:         AFTER 2 BY 10M +/- 10M;
    comment_1:     TWO 10-MIN EXPOSURES TAKEN TO
    comment_2:     AVOID ROTATION BLURRING

!

    linenum:       5.000
    sequence_1:    ^
    targname:      #
    config:        FOC/288
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    s_to_n:        30
    fluxnum_1:     1
    priority:      #
    req_1:         ORIENT 30D +/- 10D FROM 2
    comment_1:     NOTE TO SCHEDULER: ROLL IN 4
    comment_2:     AND 5 CAN ALSO BE
    comment_3:     -30D +/- 10D FROM 2

!

    linenum:       12.000
    sequence_1:    DEF
    sequence_2:    ROT
    targname:      #
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    s_to_n:        15
    fluxnum_1:     1
    priority:      #
    req_1:         SEQ 12-16 NO GAP

!

    linenum:       13.000
    sequence_1:    ^
    targname:      #
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    s_to_n:        15
    fluxnum_1:     1
    priority:      #

!

    linenum:       16.000
    sequence_1:    ^
    targname:      #
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    #
    num_exp:       1
    time_per_exp:  10M
    s_to_n:        15
    fluxnum_1:     1
    priority:      #

!

    linenum:       101.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      1-CERES
    sp_element:    F342W,F6ND
    priority:      1
    req_4:         CYCLE 2 / 101-104;
    req_5:         GUID TOL 0.020" / 101-204;

!

    linenum:       102.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      2-PALLAS
    sp_element:    F342W,F6ND
    priority:      1
    req_3:         CYCLE 2 / 101-104;

!

    linenum:       103.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      3-JUNO
    sp_element:    F342W,F6ND
    priority:      1
    req_3:         CYCLE 2 / 101-104;

!

    linenum:       104.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      4-VESTA
    sp_element:    F342W,F6ND
    priority:      1
    req_3:         CYCLE 2 / 101-104;

!

    linenum:       105.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      7-IRIS
    sp_element:    F342W,F6ND
    priority:      1
    req_1:         CYCLE 9 / 105-147;

!

    linenum:       107.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      10-HYGIEA
    sp_element:    F342W,F6ND
    priority:      2
    req_1:         CYCLE 9 / 105-147;

!

    linenum:       109.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      15-EUNOMIA
    sp_element:    F342W,F6ND
    priority:      2
    req_1:         CYCLE 9 / 105-147;

!

    linenum:       110.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      16-PSYCHE
    sp_element:    F342W,F6ND
    priority:      2
    req_1:         CYCLE 9 / 105-147;

!

    linenum:       147.000
    sequence_1:    USE
    sequence_2:    ROT
    targname:      532-HERCULINA
    sp_element:    F342W,F6ND
    priority:      2
    req_1:         CYCLE 9 / 105-147;

!

    linenum:       201.000
    sequence_1:    USE
    sequence_2:    DECON
    targname:      1-CERES
    sp_element:    F342W,F4ND
    priority:      1
    req_1:         SELECT 1 OF 201 OR 202 OR 203 OR 204;
    req_2:         COND IF FAVORABLE
    req_3:         OPPOSITION DURING CYCLE 2;
    req_4:         COND IF TAC OK;
    req_5:         CYCLE 2 / 201-204;

!

    linenum:       202.000
    sequence_1:    USE
    sequence_2:    DECON
    targname:      2-PALLAS
    sp_element:    F342W,F4ND
    priority:      1
    req_1:         COND IF FAVORABLE OPPOSITION
    req_2:         DURING CYCLE 2;
    req_3:         COND IF TAC OK;
    req_4:         CYCLE 2 / 201-204;

!

    linenum:       203.000
    sequence_1:    USE
    sequence_2:    DECON
    targname:      3-JUNO
    sp_element:    F342W,F4ND
    priority:      1
    req_1:         COND IF FAVORABLE OPPOSITION
    req_2:         DURING CYCLE 2;
    req_3:         COND IF TAC OK;
    req_4:         CYCLE 2 / 201-204;

!

    linenum:       204.000
    sequence_1:    USE
    sequence_2:    DECON
    targname:      4-VESTA
    sp_element:    F342W,F4ND
    priority:      1
    req_1:         COND IF FAVORABLE OPPOSITION
    req_2:         DURING CYCLE 2;
    req_3:         COND IF TAC OK;
    req_4:         CYCLE 2 / 201-204;

!
! end of exposure logsheet

! No scan data records found