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Updated: 2008 OCT 01, 04:12 UT
Event Rank : 33
(The event Rank is a measure of the likelihood of observing an event, and is equal to the probability of at least one successful observation by a team of two observers spaced 1/8 path width just inside opposite sides of the predicted path. An event rank of 100 indicates that the prediction is expected to be very accurate).
THE UPDATED PATH
Note: The duration given in the line below is the interval during which the occultation shadow sweeps across the Earth - please see the minute markers on the map to determine the approximate time for your location.
On 2008 Oct 07 UT, the 36 km diameter asteroid (597) Bandusia will occult a 7.3 mag star in the constellation Taurus for observers along a path across eastern Western Australia.
In the case of an occultation, the combined light of the asteroid and the star will drop by 6.4 mag to 13.7 mag (the magnitude of the asteroid) for at most 6.4 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: .
Additional details of this and other events are available at Steve Preston's website at http://www.asteroidoccultation.com/
EVENT DETAILS SUMMARY :Important Note regarding Accuracy:
The uncertainty interval in path widths given above (and shown as a 1-sigma uncertainty ellipse on the plot) refers to RMS deviation and is applied as a +/- range. In other words, a path uncertainty of 1.0 path widths means that the actual center of the asteroid's shadow path should fall within plus or minus 1 path width of the plotted path center. However path errors larger than 1 sigma have been observed so observers should be alert for primary occultations within plus or minus 3 sigma of the updated path.
Further, almost all asteroidal satellites discovered so far have been found within 10 diameters of the asteroid (since this distance is deep enough within the gravitational well to be stable over long timescales). Therefore, if monitoring for secondary events, observing out to about 10 path-widths either side of the predicted track remains worthwhile.
We therefore recommend that you monitor for events if your observing location is up to +/- 10 path-widths from the predicted track. If not monitoring for occultations by secondary bodies you should observe from locations within 3 sigma of the nominal path.
In terms of time, the predictions are now usually accurate to about +/- 0.3 minute so you should be most attentive during the predicted minute of the event. However if intending to catch a potential satellite occultation you should start observing at least 10 times the predicted central duration before the predicted closest approach time for your location, and continue for a similar period afterwards.
Centre Star Star Sun Path Limits Error Limits
E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4
o ' " o ' " h m s o o o o ' " o ' " o ' " o ' "
Longitude Longitude Longitude Longitude
126 50 46 -37 0 0 18 32 16 26 8 -28 127 3 13 126 38 19 127 53 40 125 47 40
126 52 49 -36 0 0 18 32 25 27 8 -29 127 5 6 126 40 31 127 54 53 125 50 31
126 54 27 -35 0 0 18 32 34 28 8 -29 127 6 35 126 42 18 127 55 46 125 52 55
126 55 42 -34 0 0 18 32 43 29 8 -30 127 7 41 126 43 42 127 56 17 125 54 55
126 56 35 -33 0 0 18 32 53 30 8 -30 127 8 26 126 44 44 127 56 29 125 56 30
126 57 7 -32 0 0 18 33 3 31 8 -31 127 8 50 126 45 23 127 56 21 125 57 41
126 57 18 -31 0 0 18 33 13 32 8 -31 127 8 54 126 45 42 127 55 54 125 58 30
126 57 9 -30 0 0 18 33 24 33 8 -31 127 8 38 126 45 40 127 55 9 125 58 57
126 56 40 -29 0 0 18 33 35 34 8 -32 127 8 2 126 45 18 127 54 7 125 59 3
126 55 53 -28 0 0 18 33 46 35 8 -32 127 7 9 126 44 37 127 52 48 125 58 48
126 54 48 -27 0 0 18 33 57 36 8 -33 127 5 57 126 43 38 127 51 11 125 58 13
126 53 24 -26 0 0 18 34 9 37 8 -33 127 4 28 126 42 20 127 49 19 125 57 19
126 51 44 -25 0 0 18 34 21 38 9 -34 127 2 42 126 40 45 127 47 11 125 56 6
126 49 46 -24 0 0 18 34 33 39 9 -34 127 0 39 126 38 53 127 44 47 125 54 35
126 47 32 -23 0 0 18 34 46 40 9 -35 126 58 20 126 36 43 127 42 9 125 52 45
126 45 2 -22 0 0 18 34 59 41 9 -35 126 55 46 126 34 18 127 39 15 125 50 39
126 42 16 -21 0 0 18 35 12 42 9 -35 126 52 55 126 31 36 127 36 8 125 48 15
126 39 15 -20 0 0 18 35 25 43 9 -36 126 49 50 126 28 39 127 32 46 125 45 34
126 35 58 -19 0 0 18 35 38 44 9 -36 126 46 29 126 25 26 127 29 10 125 42 37
126 32 27 -18 0 0 18 35 52 45 9 -36 126 42 54 126 21 58 127 25 20 125 39 24
126 28 41 -17 0 0 18 36 6 46 10 -37 126 39 5 126 18 16 127 21 17 125 35 55
126 24 40 -16 0 0 18 36 21 47 10 -37 126 35 1 126 14 18 127 17 1 125 32 10
126 20 25 -15 0 0 18 36 35 47 10 -38 126 30 44 126 10 7 127 12 31 125 28 11
126 15 57 -14 0 0 18 36 50 48 10 -38 126 26 13 126 5 41 127 7 49 125 23 56
126 11 14 -13 0 0 18 37 5 49 10 -38 126 21 28 126 1 1 127 2 54 125 19 26
126 6 18 -12 0 0 18 37 20 50 11 -39 126 16 29 125 56 7 126 57 47 125 14 41
126 1 9 -11 0 0 18 37 36 51 11 -39 126 11 18 125 51 0 126 52 27 125 9 42
125 55 46 -10 0 0 18 37 51 52 11 -39 126 5 53 125 45 39 126 46 54 125 4 29
Uncertainty in time = +/- 13 secs
[Prediction of 2008 Oct 1.0]
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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