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ASTROMETRIC UPDATE:
OCCULTATION BY (237) COELESTINA - 1999 JULY 10

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[Prediction using OCCULT and GUIDE software]

This event was not predicted by Goffin. The OCCULT prediction gives a path running approximately the length of New Zealand.


UPDATE: 8 July 1999

This prediction update has been computed by Graham Blow based upon 7 astrometric position of the planet obtained by Ron Stone (USNO/Flagstaff) between June 13 and July 5. Reduction is against the GSC position of the star using OCCULT software.

Summary:

  • The update astrometry moves the path off New Zealand to the east by approximately one-half a track width.
  • Event time is about 20 seconds later than the nominal OCCULT prediction.
  • Note that the formal errors on this path are several track widths.
  • Approx time for Wellington: 16h 21m UT

    THE EVENT AT ONE GLIMPSE:

    Data for the target star: Data for the minor planet: Data for the event:

    Coelestina (July 10) Update

    IMPORTANT NOTE!

    Astrometric updates such as these should not be taken as definitive, but rather only as an indication of where the true track may lie relative to the original predicted track. Observers must bear in mind that later astrometry, in which the target star is measured in the same field as the asteroid, may still reveal substantial changes to the predicted track and time of the event. For this reason it is most important that observers far from the predicted track still monitor the event.

    Use these links for further information:
    [Planetary Occultations] [Using the Predictions]
    [Observing Details] [Timing Details] [Reporting Details] [Report Form]
    [Asteroid Occultation Results]


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