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DAWN CERES SPC SHAPE MODEL V1.0 (PDS)

NSSDCA ID: PSSB-00703

Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Description

This description was generated automatically using input from the Planetary Data System.

Data Set Overview

This shape model of asteroid Ceres is based on images taken from Jan 2015 to October 2015 by the Framing Camera (FC2) on the Dawn spacecraft. Additional information about the method for deriving the model may be found in [GASKELLETAL2008], [GASKELL2005] and [GASKELLETAL2007]. The version of the model included here was prepared on December 19, 2017 and updated on October 19, 2018. A high-resolution global topography model of Ceres was determined as a part of Dawn gravity science investigation using the Stereo-photoclinometry (SPC) technique developed at the Jet Propulsion Laboratory by processing Dawn's Framing Camera data acquired during Approach to post-Low Altitude Mapping Orbit (LAMO) phases of the mission. A total of about 38,000 images were processed with image resolutions ranging from 35.6 km to 35 m. The Approach and Survey data were mainly used to compute the a priori shape model and were not used to compute the final global topography model as their contribution was almost negligible. The final topography (the current delivery) model was produced with 100-m ground sample distance using images with 140 m and 35 m pixel resolutions acquired during High Altitude Mapping Orbit (HAMO) to post-LAMO phases of the mission. This process required approximately 64,000 individual maps to completely cover the entire body, including partial overlap between maps that is essential to tie neighboring maps together. The details of this particular shape model and reference is: Park et al., High-resolution shape model of Ceres from stereophotoclinometry using Dawn Imaging Data, accepted for publication, Icarus, 2018.

Data

The models were originally prepared in the Implicitly Connected Quadrilateral (ICQ) format, and files are provided in the DATA/ICQ directory. The filenames are of the form CERES_xxxyymmdd_qqqq.ICQ, where 'TTTTT' is the applicable body (VESTA or CERES), 'xxx' is the origin of the shape model (nominally SPC, Stereo-photoclinometry), 'yy' is the creation year, 'mm' is the creation month, 'dd' is the creation day, and 'qqqq' is the resolution of the model. A text file, 'ICQMODEL.ASC' is provided in the DOCUMENT directory which describes the ICQ format. The DATA directory also contains two additional files: CERES_xxxyymmdd_PATCH.TAB - lists the locations (latitude, longitude) where no camera data were usable in generation of the shape model at that location (e.g. the surface was in shadow or no images where taken). In these locations, the shape was patched with the Ceres reference ellipsoid = [482.0, 482.0, 446.0] km. FC2_IMAGES_USED.TAB - This file lists all the Framing Camera 2 (FC2) images used in the development of the Dawn Ceres SPC shape models. It is recommended that you use the following SPICE kernels when using this product: dawn_v14.tf (or later) : Ceres Surface name/ID mappings dawn_ceres_grv171219_v1.tpc : Ceres rotation parameters de432.bsp : Planetary ephemeris sb_ceres_grv_171219.bsp : Ceres ephemeris wrt Sun dawn_grv_150204_150424_171219_v1.bsp : Dawn ephemeris wrt Ceres dawn_grv_150424_150701_171219_v1.bsp : Dawn ephemeris wrt Ceres dawn_grv_150813_151023_171219_v1.bsp : Dawn ephemeris wrt Ceres dawn_grv_151213_160902_171219_v1.bsp : Dawn ephemeris wrt Ceres dawn_fc2_150818_160827_grv171219_v1.bc : Dawn FC2 orientation The GEOMETRY directory contains a meta-kernel of these recommended kernels. The 'SPICE_OMNIBUS_MM_SIS.PDF' document is provided in the DOCUMENT directory which describes the SPICE system, where to get the toolkit, and basic use. The coordinate system of the model is described by the SPICE PC Kernel entitled 'DAWN_CERES_GRV171219_V1.TPC', available on the Navigation and Ancillary Information Facility (NAIF) Dawn archive. The pole is derived from Gravity Science observations [PARKETAL2016]. The volume archive Software Interface Specification (SIS) document describes the format and content of the archive. HTML and PDF versions of the document are provided in the DOCUMENT directory with the name 'DAWN_SPC_SHAPE_MODEL_SIS'.

Data Coverage and Quality

This volume contains the shape models derived by the Dawn Gravity Science Team at JPL using the SPC image processing technique as described above. The models are provided in 128, 258, 512, and 1024 resolutions in the DATA/ICQ directory. The complete list of images used is in the DATA directory with the filename FC2_IMAGES_USED.TAB. It has a corresponding PDS3 Label entitled FC2_IMAGES_USED.LBL. Although nearly all clear-filter images from the Ceres encounter were used, certain images which have non-opnav exposures (e.g. very long star stares) or were nearly black on the limb were excluded and not usable for shape model generation. A summary of Framing camera (FC2) images used to derive this model are shown below. ---------------------------------------------Phase Coverage date start Number Coverage date end of Images ---------------------------------------------SET 1 ---------------------------------------------RC1 2015-FEB-12 11:54:40 UTC 40 2015-FEB-12 21:42:09 UTC RC2 2015-FEB-19 14:55:09 UTC 36 2015-FEB-19 23:47:56 UTC Opnav4 2015-FEB-25 19:07:38 UTC 20 2015-FEB-25 21:04:42 UTC Opnav5 2015-MAR-02 00:32:58 UTC 20 2015-MAR-02 02:30:04 UTC Opnav6 2015-APR-10 08:06:48 UTC 20 2015-APR-10 10:03:49 UTC Opnav7 2015-APR-15 06:52:20 UTC 20 2015-APR-15 08:49:22 UTC HPS 2015 APR 25 07:10:01 UTC 251 2015 APR 27 03:50:22 UTC HPN 2015 APR 29 06:20:02 UTC 389 2015 MAY 01 22:00:07 UTC RC3N 2015 MAY 04 03:10:02 UTC 51 2015 MAY 04 13:35:04 UTC RC3E 2015 MAY 05 19:50:02 UTC 51 2015 MAY 06 06:15:06 UTC RC3S 2015 MAY 07 12:20:03 UTC 51 2015 MAY 07 22:45:08 UTC Opnav8 2015-MAY-16 17:05:40 UTC 40 2015-MAY-16 19:02:40 UTC Opnav9 2015-MAY-22 21:46:18 UTC 40 2015-MAY-22 23:43:18 UTC SET 2 ---------------------------------------------SurveyC1 2015-JUN-05 15:29:33 UTC 150 2015-JUN-07 05:17:33 UTC SurveyC2 2015-JUN-08 18:22:58 UTC 118 2015-JUN-10 07:23:59 UTC SurveyC3 2015-JUN-11 21:22:23 UTC 114 2015-JUN-13 11:02:24 UTC SurveyC4 2015-JUN-15 00:08:51 UTC 142 2015-JUN-16 13:36:51 UTC SurveyC5 2015-JUN-18 03:15:17 UTC 109 2015-JUN-19 16:15:17 UTC SurveyC6 2015-JUN-21 06:06:43 UTC 112 2015-JUN-22 19:06:43 UTC SurveyC7 2015-JUN-24 08:07:43 UTC 118 2015-JUN-25 23:02:44 UTC SET 3 ---------------------------------------------HAMO C1 001 18-AUG-2015 04:53:42 UTC 60 19-AUG-2015 09:13:03 UTC HAMO C1 003 19-AUG-2015 18:42:31 UTC 60 20-AUG-2015 23:02:02 UTC HAMO C1 005 21-AUG-2015 08:31:14 UTC 70 22-AUG-2015 12:50:23 UTC HAMO C1 007 22-AUG-2015 22:29:25 UTC 40 23-AUG-2015 07:44:29 UTC HAMO C1 008 23-AUG-2015 17:13:43 UTC 41 24-AUG-2015 02:38:48 UTC HAMO C1 009 24-AUG-2015 12:08:10 UTC 120 27-AUG-2015 06:15:54 UTC HAMO C2 001 29-AUG-2015 07:00:45 UTC 32 29-AUG-2015 16:00:46 UTC HAMO C2 002 31-AUG-2015 15:42:34 UTC 32 01-SEP-2015 00:42:34 UTC HAMO C2 003 03-SEP-2015 19:18:24 UTC 32 04-SEP-2015 04:18:23 UTC HAMO C2 004 30-AUG-2015 02:14:46 UTC 156 07-SEP-2015 07:13:45 UTC HAMO C2 005 30-AUG-2015 01:54:46 UTC 178 07-SEP-2015 07:53:45 UTC HAMO C3 001 09-SEP-2015 07:12:16 UTC 34 09-SEP-2015 16:42:16 UTC HAMO C3 002 14-SEP-2015 19:27:22 UTC 34 15-SEP-2015 04:57:22 UTC HAMO C3 003 15-SEP-2015 14:20:49 UTC 136 18-SEP-2015 08:31:32 UTC HAMO C4 001 20-SEP-2015 05:12:48 UTC 33 20-SEP-2015 14:27:48 UTC HAMO C4 002 20-SEP-2015 08:30:18 UTC 18 21-SEP-2015 00:45:39 UTC HAMO C4 003 22-SEP-2015 00:53:35 UTC 50 24-SEP-2015 12:52:18 UTC HAMO C4 004 21-SEP-2015 22:16:05 UTC 49 26-SEP-2015 02:37:59 UTC HAMO C4 005 21 SEP 2015 00:45:39 UTC 439 29-SEP-2015 06:09:44 UTC HAMO C5 001 01-OCT-2015 06:40:17 UTC 116 04-OCT-2015 00:28:42 UTC HAMO C5 002 04-OCT-2015 10:11:19 UTC 58 05-OCT-2015 14:14:04 UTC HAMO C5 003 05-OCT-2015 23:56:49 UTC 29 06-OCT-2015 09:06:55 UTC HAMO C5 004 06-OCT-2015 18:49:40 UTC 58 07-OCT-2015 22:52:40 UTC HAMO C5 005 08-OCT-2015 08:35:21 UTC 87 10-OCT-2015 07:30:51 UTC HAMO C6 001 12-OCT-2015 08:40:19 UTC 36 13-OCT-2015 03:52:58 UTC HAMO C6 002 13-OCT-2015 11:02:58 UTC 30 15-OCT-2015 20:40:35 UTC HAMO C6 003 14-OCT-2015 23:28:01 UTC 35 18-OCT-2015 06:18:36 UTC HAMO C6 004 13-OCT-2015 03:52:58 UTC 310 21-OCT-2015 09:48:54 UTC SET 4 ---------------------------------------------LAMO C0 001 16-DEC-2015 09:27:00 UTC 365 17-DEC-2015 20:30:04 UTC LAMO C1 001 18-DEC-2015 21:17:28 UTC 321 21-DEC-2015 11:24:20 UTC LAMO C1 002 18-DEC-2015 21:14:28 UTC 426 21-DEC-2015 12:17:41 UTC LAMO C1 003 18-DEC-2015 22:59:09 UTC 821 26-DEC-2015 16:56:50 UTC LAMO C1 004 28-DEC-2015 00:00:18 UTC 777 30-DEC-2015 15:00:41 UTC LAMO C1 005 01-JAN-2016 13:21:24 UTC 743 04-JAN-2016 19:39:20 UTC LAMO C1 006 01-JAN-2016 14:42:44 UTC 825 08-JAN-2016 17:48:13 UTC LAMO C2 001 10-JAN-2016 21:01:56 UTC 792 14-JAN-2016 03:16:36 UTC LAMO C2 002 15-JAN-2016 10:24:15 UTC 796 18-JAN-2016 16:35:41 UTC LAMO C2 003 19-JAN-2016 23:41:25 UTC 631 22-JAN-2016 14:37:49 UTC LAMO C2 004 24-JAN-2016 12:55:07 UTC 773 27-JAN-2016 03:52:22 UTC LAMO C2 005 29-JAN-2016 02:11:49 UTC 780 31-JAN-2016 17:12:31 UTC LAMO C3 001 02-FEB-2016 21:11:17 UTC 720 06-FEB-2016 03:19:57 UTC LAMO C3 002 07-FEB-2016 10:33:00 UTC 722 10-FEB-2016 16:36:52 UTC LAMO C3 003 11-FEB-2016 23:49:42 UTC 708 14-FEB-2016 14:29:14 UTC LAMO C3 004 16-FEB-2016 13:05:31 UTC 732 19-FEB-2016 03:46:56 UTC LAMO C3 005 21-FEB-2016 02:25:30 UTC 529 23-FEB-2016 00:44:11 UTC LAMO C4 001 26-FEB-2016 02:43:26 UTC 353 28-FEB-2016 11:56:41 UTC LAMO C4 002 02-MAR-2016 08:23:56 UTC 354 04-MAR-2016 01:11:39 UTC LAMO C4 003 05-MAR-2016 23:46:59 UTC 206 08-MAR-2016 14:26:51 UTC LAMO C4 004 10-MAR-2016 13:04:16 UTC 348 13-MAR-2016 03:47:38 UTC LAMO C4 005 15-MAR-2016 02:27:18 UTC 354 17-MAR-2016 17:11:21 UTC LAMO C5 001 20-MAR-2016 08:35:22 UTC 306 23-MAR-2016 04:20:49 UTC LAMO C5 002 25-MAR-2016 14:18:22 UTC 149 27-MAR-2016 01:16:10 UTC LAMO C5 003 29-MAR-2016 00:19:07 UTC 255 31-MAR-2016 14:38:49 UTC LAMO_C05_04 03-APR-2016 00:38:55 UTC 204 04-APR-2016 11:37:48 UTC LAMO_C05_05 07-APR-2016 13:59:39 UTC 187 09-APR-2016 17:20:24 UTC LAMO_C06_01 11-APR-2016 21:27:55 UTC 548 14-APR-2016 00:58:22 UTC LAMO_C06_02 16-APR-2016 11:03:35 UTC 578 19-APR-2016 05:23:03 UTC LAMO_C06_03 20-APR-2016 23:52:54 UTC 562 23-APR-2016 03:25:33 UTC LAMO_C06_04 25-APR-2016 13:11:53 UTC 561 28-APR-2016 13:12:55 UTC LAMO_C06_05 30-APR-2016 02:34:08 UTC 495 02-MAY-2016 00:40:13 UTC LAMO_C07_01 05-MAY-2016 08:32:23 UTC 540 07-MAY-2016 12:00:56 UTC LAMO_C07_02 09-MAY-2016 21:47:49 UTC 563 12-MAY-2016 11:31:34 UTC LAMO_C07_03 14-MAY-2016 11:08:01 UTC 540 16-MAY-2016 14:40:01 UTC LAMO_C07_04 19-MAY-2016 00:29:55 UTC 540 21-MAY-2016 04:00:16 UTC LAMO_C07_05 23-MAY-2016 08:19:29 UTC 485 25-MAY-2016 06:20:25 UTC LAMO_C08_01 27-MAY-2016 21:28:41 UTC 695 30-MAY-2016 22:09:00 UTC LAMO_C08_02 01-JUN-2016 10:47:17 UTC 727 04-JUN-2016 06:46:51 UTC LAMO_C08_03 06-JUN-2016 00:10:44 UTC 684 08-JUN-2016 14:42:07 UTC LAMO_C08_04 10-JUN-2016 13:32:01 UTC 670 13-JUN-2016 08:39:00 UTC LAMO_C08_05 14-JUN-2016 21:19:50 UTC 751 17-JUN-2016 17:14:00 UTC LAMO_C09_01 19-JUN-2016 21:19:07 UTC 796 22-JUN-2016 22:58:17 UTC LAMO_C09_02 24-JUN-2016 10:36:32 UTC 786 27-JUN-2016 12:18:45 UTC LAMO_C09_03 28-JUN-2016 23:58:03 UTC 715 01-JUL-2016 20:11:55 UTC LAMO_C09_04 03-JUL-2016 07:50:02 UTC 794 06-JUL-2016 09:29:01 UTC LAMO_C09_05 07-JUL-2016 21:05:57 UTC 777 11-JUL-2016 03:26:14 UTC LAMO_C10_01 16-JUL-2016 18:03:20 UTC 223 17-JUL-2016 13:05:22 UTC LAMO_C10_02 18-JUL-2016 08:07:59 UTC 782 21-JUL-2016 10:00:08 UTC LAMO_C10_03 22-JUL-2016 21:27:00 UTC 668 25-JUL-2016 12:22:13 UTC LAMO_C10_04 26-JUL-2016 23:47:06 UTC 911 30-JUL-2016 12:29:51 UTC LAMO_C10_05 01-AUG-2016 16:26:43 UTC 673 04-AUG-2016 07:07:09 UTC LAMO_C10_06 05-AUG-2016 18:30:36 UTC 668 08-AUG-2016 09:23:38 UTC LAMO_C11_01 10-AUG-2016 13:57:40 UTC 725 13-AUG-2016 15:52:32 UTC LAMO_C11_02 15-AUG-2016 03:15:26 UTC 734 17-AUG-2016 23:40:21 UTC LAMO_C11_03 19-AUG-2016 11:03:01 UTC 633 22-AUG-2016 06:35:03 UTC LAMO_C11_04 24-AUG-2016 00:35:29 UTC 730 27-AUG-2016 01:38:41 UTC ---------------------------------------------

References

GASKELL, R. W., BARNOUIN-JHA, O. S., SCHEERES, D. J., KONOPLIV, A. S., MUKAI, T. , ABE, S. , SAITO, J. , ISHIGURO, M. , KUBOTA, T. , HASHIMOTO, T. , KAWAGUCHI, J. , YOSHIKAWA, M. , SHIRAKAWA, K. , KOMINATO, T. , HIRATA, N. and DEMURA, H. (2008), Characterizing and navigating small bodies with imaging data. Meteoritics and Planetary Science, 43: 1049-1061. doi:10.1111/j.1945-5100.2008.tb00692.x [GASKELLETAL2008] Gaskell, R.W., O. Barnouin-Jha, and D. Scheeres, Modeling Eros with Stereophotoclinometry, Abstract #1333, 38th LPSC, Houston, TX, 2007. [GASKELLETAL2007] Gaskell R.W., Landmark navigation and target characterization in a simulated Itokawa encounter, AAS paper 05-289, AAS/AIAA Astrodynamics Specialists Conf., Lake Tahoe, CA, 2005. [GASKELL2005] R. S. Park, A. S. Konopliv, B. G. Bills, N. Rambaux, J. C. Castillo-Rogez, C. A. Raymond, A. T. Vaughan, A. I. Ermakov, M. T. Zuber, R. R. Fu, M. J. Toplis, C. T. Russell, A. Nathues and F. Preusker, A partially differentiated interior for (1) Ceres deduced from its gravity field and shape, Nature 537, 515-517, 2016. [PARKETAL2016]

These data are available on-line from the Planetary Data System (PDS) at:

https://sbnarchive.psi.edu/pds3/dawn/fc/DWNCSPC_4_01/

Alternate Names

  • DAWN-A-FC2-5-CERESSHAPESPC-V1.0

Discipline

  • Planetary Science: Small Bodies

Additional Information

Spacecraft

Experiments

Questions and comments about this data collection can be directed to: Dr. David R. Williams

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Horst Uwe KellerData ProviderMax-Planck-Institut fur Aeronomiekeller@linmpi.mpg.de
Dr. Dustin R. BuccinoGeneral ContactNASA Jet Propulsion Laboratorydustin.r.buccino@jpl.nasa.gov
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