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Observations of comet 19P/Borrelly from the Miniature Integrated Camera and Spectrometer (MICAS) aboard Deep Space 1

Soderblom, L.A. and Boice, D.C. and Britt, D.T. and Brown, R.H. and Buratti, B.J. and Hicks, M.D. and Nelson, R.M. and Oberst, J. and Sandel, B.R. and Stern, S.A. and Thomas, N. and Yelle, R.V. (2001) Observations of comet 19P/Borrelly from the Miniature Integrated Camera and Spectrometer (MICAS) aboard Deep Space 1. In: Bulletin of the American Astronomical Society, 33, p. 1087. American Astronomical Society, DPS Meeting #33, # 26.02, New Orleans, 27. Nov. - 1 Dec. 2001.

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Images from the DS1 MICAS CCD camera reveal in three dimensions, the complex characteristics of Borrelly's nucleus, coma, and jets. The images acquired during the last 2 hours of the approach, as the nucleus became resolved and grew to roughly 150 pixels in length, provide stereo coverage of both the nucleus and inner coma over a wide range of phase angle and exposure time. The principal structure in the coma is a sunward-pointed collimated jet that is also visible in ground-based images. This jet is canted about 30 degrees off the sun line and appears to be roughly aligned with the local vertical at the surface from where it originates. Long-exposure images reveal details of the structure of the inner coma. They show the jet, visible at long range, to be composed of at least three discrete components whose locations evidently correspond to specific surface features. The elongated nucleus exhibits topographically distinct terrains and strong albedo variegations (of at least a factor of 2). The jets emanate from within the brighter smoother rolling plains. A consistent model is that the main jets are co-aligned with the rotation axis of the nucleus and issue from regions on the plains that are currently in constant sunlight. The other major terrain is a rough unit that is darker than the average, includes even darker isolated spots, and appears as a jumbled topography. Other surface features include parallel ridges, crater-like depressions, numerous narrow dark fracture-like features, and areas of mottled albedo. However no small fresh impact craters are evident attesting to a geologically young, actively evolving surface.

Item URL in elib:https://elib.dlr.de/18622/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Observations of comet 19P/Borrelly from the Miniature Integrated Camera and Spectrometer (MICAS) aboard Deep Space 1
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Soderblom, L.A.U.S. Geological Survey, Flagstaff, AZUNSPECIFIEDUNSPECIFIED
Boice, D.C.Southwest Research Institute, San Antonio, TXUNSPECIFIEDUNSPECIFIED
Britt, D.T.University of TennesseeUNSPECIFIEDUNSPECIFIED
Brown, R.H.Southwest Research Institute, Boulder, COUNSPECIFIEDUNSPECIFIED
Buratti, B.J.Jet Propulsion Laboratory, Pasadena, CAUNSPECIFIEDUNSPECIFIED
Hicks, M.D.Jet Propulsion Laboratory, Pasadena, CAUNSPECIFIEDUNSPECIFIED
Nelson, R.M.Jet Propulsion Laboratory, Pasadena, CAUNSPECIFIEDUNSPECIFIED
Sandel, B.R.University of Arizona, Tucson, AZUNSPECIFIEDUNSPECIFIED
Stern, S.A.Southwest Research Institute, Boulder, COUNSPECIFIEDUNSPECIFIED
Thomas, N.Max-Planck-Institut für Aeronomie, Katlenburg-LindauUNSPECIFIEDUNSPECIFIED
Yelle, R.V.Northern Arizona UniversityUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Bulletin of the American Astronomical Society
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:p. 1087
Series Name:Bulletin of the American Astronomical Society
Event Title:American Astronomical Society, DPS Meeting #33, # 26.02, New Orleans, 27. Nov. - 1 Dec. 2001
Organizer:American Astronomical Society
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institut für Weltraumsensorik und Planetenerkundung
Deposited By: Pieth, Susanne
Deposited On:08 Dec 2005
Last Modified:14 Jan 2010 19:32

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