=================================================================================
CONTENTS OF THE DIRECTORY

This directory contains the observational data of the mutual events of the 
Uranian satellites occurring in 2007. One will find:

1) - The file astrometric positions.txt (one line for each observation)
contains two lists of data:
The first one contains as folows:

Date - date of observation.
Type - the type of the phenomenon (eclipse or occultation)
     including the satellite numbers in the form "nem" or "nom",
     where n is the number of the occulting or eclipsing satellite
and m - is the number of the occulted or eclipsed satellite.
Obs - observatory code (see below).
UTC - the time instant in the UTC scale (h, m, s).
X, Y - X=Delta(alpha)*cos(delta), Y=Delta(delta)
     (occulting satellite relative to occulted one
     or eclipsing satellite relative to eclipsed one)
     in arcseconds in ICRF.
sigmaX, sigmaY - rms of X, Y, correspondingly, in arcseconds.
     This is because of random errors of the photometry.
O-C_X, O-C_Y - differences of X, Y from the results
     of the satellites motion theory ( V. Lainey ), in arcseconds.
s, pos - apparent distance (arcsec) and positional angle (deg.),
     accorsding to X, Y .
Q - index of the result quality, following from processing:
     Q=0 - normal result,
     Q=1 - doubtful result
     Q=2 - result following from low quality photometry.
Smin - minimum of the normalized modelled flux. 


The second one:

Date - date of observation.
Type - the type of the phenomenon (eclipse or occultation)
     including the satellite numbers in the form "nem" or "nom",
     where n is the number of the occulting or eclipsing satellite
and m - is the number of the occulted or eclipsed satellite.
Obs - observatory code.
UTC - the time instant in the UTC scale (h, m, s).
pos - position angle (degrees, ICRF) of the occulting or eclipsing satellite
     relative to the occulted or eclipsed one.
prec. - precision (arcsec) of apparent position
     along the apparent relative trajectory of the satellite
     as obtained with the least-square method.
R - sign showing the reason why only one coordinate was determined:
     0 - for a total mutual eclipse or occultation observed,
     1 - for the results obtained from poor photometric data.
In these cases the apparent relative position of the satellite
measured across the apparent trajectory can not be determined
accurately enough and therefore position angles can be determined only
up to ± 180 degrees. 
     

 
2) - the codes for observing sites are:

AGE  Ager, Lleida, Spain 
AMP  L'Ampolla, Tarragona, Spain  
APO  Apache Point
ATH  Athens, Greece
CAN  CANARIES (TNG)
CLE  Cleveland
ELL  Ellington, Covington, Seattle
ESO  European Southern Observatory, La Silla
FAS  Siding Spring-Faulkes Telescope South
FAU  Haleakala-Faulkes Telescope North
HAN  Hanle Observatory
ITA  Itajuba
MAR  Marseille 
MON  Monterrey
PIC  Pic-du-Midi
SUT  SALT Telescope, Sutherland, South Africa 
TUB  TUBITAK National Observatory
VLT  Cerro Paranal

==============================================================================