||The Small Bodies Node
2002 Comet Data Review
4 December 2002
View notes and liens from the review.
Introduction to the PDSSBN and the review process
Small Bodies Node
(SBN) is a data node of the
Planetary Data System
(PDS). SBN is charged with archiving data concerning comets, asteroids, and
interplanetary dust. The PDS archive is a "deep archive", intended to contain
sufficient documentation and ancillary data for future scientists to interpret
and use the data long after the original scientists or teams are no longer
available to help. It is also intended to provide useful data to researchers
in a convenient way at the present time. In reviewing the data you should
keep in mind these two complementary goals of preserving the data in a way
useable by future generations and making the data easily accessible to current
How to review the data
The review period is Nov 4th through Dec 3rd, 2002. Please allow
yourself enough time to do a thorough review of the data sets.
To access and check data, SBN provides tools and READPDS IDL routines
SBN main web site under
A special tool set, an improved version of the READPDS IDL routines, has been
provided for this comet data review.
To check out the improved routines, go to the
PDSBETA directory and copy its contents.
For instructions about the improved routines, click
[Data sets are not ready for downloading (as a package) but can be
individually copied (go to Data under review).]
The data are assembled in the form of a PDS standard volume. The data
are found in directories labeled DATA, or by some reasonable identifier, such
as spacecraft/institution/instrument mode. Data and tables are found
in files with extensions .tab or .dat or .fit or .img, respectively.
Each data file has a corresponding .lbl file which documents its
structure and content. In addition, each data set has a "catalog" file, with
extension .cat. This file contains an overview of the data set
and additional information such as the update history, processing, etc.
There are other catalog files that describe the volume, the mission, the
instrument, and the spacecraft/institution/observatory that serves as host,
and references to the relevant published papers . One looks at the first
introductory file, called the aareadme, for an overview of the volume.
Other files that may occur document the errata or give listings of specific
directories (*info.txt). For voluminous data, a file index is created and
placed in the INDEX directory; there may also be a scientific index provided.
Finally, there will be available documentation including information on
processing collected in the DOCUMENT directory. In special cases, additional
files without PDS labels are collected in the EXTRAS directory .
For an overview of the review process and what to expect at the review
itself, see the Small Bodies Node writeup on
The Peer Review Process
For detailed guidlines on reviewing the data sets, see the Small Bodies
What We Need from Data Reviewers
The Review Meeting
The 2002 Comets Data Review starts on Nov 4th, and culminates in
the review meeting held Wed Dec 4 at the
University of Maryland (UMd).
The review will be held in Rm 2316 of CSS (224) on campus. For more
information on meeting logistics
you can click on the link below, or you can
contact Linda Diamond at (301) 405-5024 or
send her an email.
The meeting will last for one full day, and lunch will be brought in.
Traditionally, participants also get together for dinner after the meeting.
The agenda for the meeting, including
a list of the data sets reviewed, is a separate link below.
[Data sets are not ready for downloading (as a package) but can be linked
(go to Data under review).]
Images of 19P/Borrelly
Tony Farnham assembled a set of
to be ingested
into the Small Bodies Node. We will discuss these images as well as other
prospective data on Borrelly to support the Deep Space 1 analysis.
Please look over the Borrelly images.
The images are also linked on the Data under review
Other Future Data Sets
What ground-based comet data would you like to see archived in PDS?
You can see what data sets are already archived at the
Small Bodies Node Data Archives .
Please provide your suggestions at this discussion.
For questions about the data sets, the review, or this web site, contact
Links to further information: