DATA_SET_DESCRIPTION |
Data Set Overview
=================
This data set is intended to include published broadband colors of centaurs
and Transneptunian Objects (TNOs) published through January 2011. It also
includes some comets with Centaur orbits.
Data
====
Data were collected from the published literature and include
Johnson-Kron-Cousins color indices and one-sigma uncertainty values. Many
objects have data reported by several groups. Details of the observations
and data reduction are to be found in the individual papers. Note that only
UBVRIJHK colors are included in this collection. For ECAS colors of Centaur
2060 Chiron, see the PDS ECAS data set, EAR-A-2CP-3-RDR-ECAS-V4.0.
Archiving History
=================
The TNO colors data set, EAR-A-3-RDR-TNO-PHOT, was first introduced in 2000
and has been updated annually since then. At the 2004 review, a data set
compiling colors of Centaurs was also introduced, and it was decided to
combine the two to make a new data set. A column was added to the data
table to indicate whether the object is a TNO or a Centaur. In the 2009
update, a column was added to specify if the measurement was made of the
primary or secondary, or of the coma or nucleus, of the target body. In
2010, the column identifying the dynamic classification (TNO or CEN) was
changed to reflect the classification by the MPC (TNO or CEN/SDO) rather
than the assignment made by the individual publication, as it had been in
earlier versions of the data set.
This data set supersedes all the versions of the TNO colors data set,
EAR-A-3-RDR-TNO-PHOT.
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