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SMALL BODY SHAPE MODELS V2.1 (PDS)

NSSDCA ID: PSSB-00344

Availability: Archived at NSSDC, accessible from elsewhere

Description

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

Data Set Overview ================= This data set contains the Peter Thomas shape models for small solar system bodies, as well as image mosaics constructed from these models. These shape models are based on optical data and are distinct from the shape models based on radar observations which are included in a separate data set, EAR-A-5-DDR-RADARSHAPE-MODELS-V1.0. The current version of this data set contains the following. 243 Ida: Shape model, image mosaic, and a list of Galileo SSI images used to construct the image mosaic 951 Gaspra: Shape model, image mosaic, and a list of Galileo SSI images used to construct the image mosaic 253 Mathilde: Shape model and a list of NEAR MSI images used to produce the shape model. 4 Vesta: Shape model and a list of HST images used to produce the shape model. M1 Phobos: Shape model, image mosaic and a list of Viking Orbiter images use to construct the image mosaic M2 Deimos: Shape model, image mosaic and a list of Viking Orbiter images use to construct the image mosaic S7 Hyperion: Shape model, image mosaic and a list of Voyager 2 Narrow Angle images use to construct the image mosaic S10 Janus: Shape model and list of Voyager 1 and 2 images used to derive the model (image mosaic not yet completed) S11 Epimetheus: Shape model and list of Voyager 1 and 2 images used to derive the model (image mosaic not yet completed) Parameters ========== The shape models consist of a grid of body-centered latitude and longitude with a diameter listed for each grid point. Details of mapping and production of each model are given in the PDS label for the shape model file, and further details are given in the relevant published papers. Davies, M.E., V.K. Abalakin, A. Brahic, M. Bursa, B.H. Chovitz, J.H. Lieske, P.K. Seidelmann, A.T. Sinclair, and I.S. Tiuflin 1992. Report of the IAU/IAG/COSPAR Working Group on Cartographic Coordinates and Rotational Elements of the Planets and Satellites - 1991. Celestial Mechanics and Dynamical Astronomy, 53, no. 4, 377-397. [DAVIESETAL1992] Simonelli, D.P., P.C. Thomas, B.T. Carcich, and J. Veverka 1993. Generation and use of numerical shape models for irregular solar system objects. Icarus, 103, 49-61. [SIMONELLIETAL1993] Thomas, P.C. 1993. Gravity, tides, and topography on small satellites and asteroids. Icarus 105, 326-344. [THOMAS1993] Duxbury, T.C., and J.D. Callahan 1989. Phobos and Deimos control networks. Icarus 77, 275-286. [DUXBURY&CALLAHAN1989] Duxbury, T.C., J.D. Callahan, and A.C. Ocampo 1984. Phobos: Close encounter imaging from the Viking Orbiters. NASA reference publication 1109. [DUXBURYETAL1984] Davies, M.E., T.R. Colvin, M.J.S. Belton, J. Veverka, and P. Thomas 1994. The direction of the north pole and the control network of asteroid 951 Gaspra. Icarus 107, 18-22. [DAVIESETAL1994A] Davies, M.E., T.R. Colvin, M.J.S. Belton, J. Veverka, and P. Thomas 1996. The direction of the north pole and the control network of asteroid 243 Ida. Icarus 120, 33-37. [DAVIESETAL1996] Thomas, P.C., J. Veverka, D. Simonelli, P. Helfenstein, B. Carcich, M.J.S. Belton, M.E. Davies, and C. Chapman 1994. The shape of Gaspra. Icarus 107, 25-36. [THOMASETAL1994] Thomas, P.C., M.J.S. Belton, B. Carcich, C. R. Chapman, M.E. Davies, R. Sullivan, and J. Veverka 1996. The shape of Ida. Icarus 120, 20-32. [THOMASETAL1996] Thomas, P.C., G.J. Black, and P.D. Nicholson 1995. Hyperion: Rotation, shape, and geology from Voyager images. Icarus 117, 128-148. [THOMASETAL1995] Yoder, C.F., S.P. Synnott, and H. Salo 1989. Orbits and masses of Saturn's co-orbiting satellites Janus and Epimetheus. Astron. J. 98, 1875-1889. [YODERETAL1989] Thomas, P. 1989. The shapes of small satellites. Icarus 77, 248-274. [THOMAS1989] Thomas, P.C., R.P. Binzel, M.J. Gaffey, B.H. Zellner, A.D. Storrs, and E. Wells 1997. Vesta: Spin pole, size, and shape from HST images. Icarus 128, 88-94. [THOMASETAL1997] Thomas, P.C., J. Veverka, J.F. Bell III, B.E. Clark, B. Carcich, J. Joseph, M. Robinson, L.A. McFadden, M.C. Malin, C.R. Chapman, W. Merline, and S. Murchie 1999. Mathilde: Size, shape, and geology. Icarus 140, 17-27. [THOMASETAL1999] Update History ============== This data set was first reviewed and archived in 1997. It is now being updated to include two new shape models which have become available, those of the asteroids 253 Mathilde and 4 Vesta. In February 2002 a critical look was taken at the labels of these files in order to fill in information previously left blank. The following changes were made: o INSTRUMENT and INSTRUMENT_HOST were provided in all cases. o START_TIME and STOP_TIME were provided as accurately as they could be determined from data elsewhere in the PDS archives. [ Note that the START_TIME and STOP_TIME for the entire data set has been left as 'N/A,' since the concept is not really relevant to the shape model content as a whole.] o The AXIS_ORDER_TYPE keyword was added to the IMAGE object in FITS file PDS labels with a value of 'FIRST ORDER FASTEST'. This is the appropriate order for FITS files (but not the PDS default). o A few minor typographical errors in description fields were corrected. o The 'mathilde.lbl' file, which was inadvertently left incomplete and contained several syntactical errors, was completed and the format verified. o The file names and TARGET_NAME values corresponding to asteroids were changed to the (new) standard format <number>_<name>.

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

http://sbn.psi.edu/pds/asteroid/EAR_A_5_DDR_SHAPE_MODELS_V2_1/

Alternate Names

  • EAR-A-5-DDR-SHAPE-MODELS-V2.1

Discipline

  • Planetary Science: Small Bodies

Additional Information

Spacecraft

Experiments

Questions and comments about this data collection can be directed to: Dr. Edwin V. Bell, II

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Michael H. CarrData ProviderUS Geological Surveycarr@usgs.gov
Dr. Carol NeeseGeneral ContactPlanetary Science Instituteneese@psi.edu
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