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File: 1999_N1_owen_nsdc.data.txt
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       Contents:
   - 3 observations of N-1 on 2001 July 22


       References:
  Observations communicated to NSDC by :

W. M. Owen Jr., Jet Propulsion Laboratory 301-150, Pasadena CA 91109-8099
wmo@jpl.nasa.gov

observatory code: 673



       Comments:

The observations were made at JPL's Table Mountain Observatory and reduced,
using the overlapping plate method, to 14 stars from the Tycho-2 catalog.
Formal uncertainties are 0.040" for Umbriel, 0.032" for Titania, and 0.027"
for Oberon, but my experience with minor planets leads me to suspect that
the correct sigma is more likely to be in the range 0.07-0.10".

Only Oberon was completely free of the glare from the planet.  Systematic
errors in the radial direction are not impossible, especially for Umbriel.
Ariel was visible in the images but my programs failed to find a centroid.


COD 673
CON W. M. Owen Jr., Jet Propulsion Laboratory 301-150, Pasadena CA 91109-8099
CON [wmo@jpl.nasa.gov]
OBS W. M. Owen Jr.
MEA W. M. Owen Jr.
TEL 0.61-m f/16 reflector + CCD
NET Tycho-2
ACK 01137


     Format:
These are reported in the format used by the Minor Planet Center.

         This is a sequential file; one record contains 80 bytes with the 
         MPC format,
         col.  1-12    the satellite number or designation,
         col. 16-19    the year,               
         col. 21-22    the month, 
         col. 24-31    the day and fraction of day,
 
         col. 33-34    hours                  |
         col. 36-37    minutes                  > right ascension 
         col. 39-43    seconds                |
         col. 45-47    degrees          |
         col. 49-50    minuts            >       declination
         col. 52-55    seconds          |
 
         col. 66-69    magnitude if available
         col. 71       spectral band for the magnitude if available
         col. 78-80    observatory IAU number

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