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ASTROMETRIC UPDATE:
OCCULTATION BY (1173) ANCHISES - 2001 NOVEMBER 22

[Prediction by Edwin Goffin]

[Prediction using OCCULT software]

The prediction given by Goffin clips the far southeastern portions of New South Wales and eastern Victoria on the way to the Southern Ocean. The path given by Occult lies slightly to the southeast covering far northwestern Tasmania


UPDATE: 16 November 2001

THE UPDATED PATH

Anchises Update

This updated path lies around four path widths to the southeast of that given by Goffin and around 3 minutes later. The path passes from the northeast through the Tasman Sea without making landfall. The closest approach to the North Island of New Zealand occurs at 10:42 UT while the closest approach to Tasmania occurs at 10:44 UT.

The error margin on this calculation is fairly large with Hobart well inside the boundary. Auckland on the other hand is less likely but not out of the question.

Observers should note that the target star is quite faint - magnitude = 11.9.

Calculation Source

This prediction update has been computed by Steve Preston, Medina (Seattle), Washington, USA based on astrometry from Ron Stone of the US Naval Observatory - Flagstaff Station supplemented with data from the AstDys database. The UCAC position of the target star has been used.

EVENT DETAILS SUMMARY: The Occultation Path: Data for the target star: Data for the minor planet:

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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