Data Set Overview
  =================
 
  This data set is intended to include published broadband colors of centaurs
  and Transneptunian Objects (TNOs) published through April 2009.
 
  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.
 
  Archiving History
  =================
 
  The TNO colors data set, EAR-A-3-RDR-TNO-PHOT, was first introduced in 2000
  and was 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.  Note that
  scattered disk objects are marked as TNOs, not as Centaurs.  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.
 
  This data set supersedes all the versions of the TNO colors data set,
  EAR-A-3-RDR-TNO-PHOT.

Confidence Level Overview
  =========================
    We assume the R-bandpass used by the various observers is in the
    Kron-Cousins system, but that this cannot be verified for all of the
    measurements included in this data set.
 
    Refer to the individual published papers for the confidence level of any
    individual measurement.