|
|
Updated: 2006 FEB 03, 22:49 UT
Event Rank : 59
(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 2006 Feb 10 UT, the 51 km diameter asteroid (665) Sabine will occult a 11.1 mag star in the constellation Auriga for observers along a path across Australia from the Kimberley region to Kangaroo Island in South Australia.
In the case of an occultation, the combined light of the asteroid and the star will drop by 3.2 mag to 14.2 mag (the magnitude of the asteroid) for at most 7.4 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC.
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 Limit1 Path Limit2 Error Limit1 Error Limit2
E. Longitude Latitude U.T. Alt Az Alt
o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' "
Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude
126 15 17 -11 37 5 12 54 46 40 328 -40 126 30 20 -11 36 12 126 0 17 -11 38 2 127 1 46 -11 34 32 125 29 12 -11 40 9
126 54 46 -13 40 31 12 55 9 37 329 -39 127 10 2 -13 39 46 126 39 32 -13 41 20 127 41 57 -13 38 22 126 7 59 -13 43 12
127 38 45 -15 49 39 12 55 31 35 329 -39 127 54 18 -15 49 3 127 23 14 -15 50 19 128 26 49 -15 48 1 126 51 8 -15 51 52
128 28 21 -18 5 41 12 55 54 33 329 -38 128 44 16 -18 5 17 128 12 30 -18 6 9 129 17 33 -18 4 41 127 39 40 -18 7 19
129 25 9 -20 30 14 12 56 17 30 329 -38 129 41 32 -20 30 6 129 8 50 -20 30 27 130 15 49 -20 30 4 128 35 6 -20 31 7
130 31 29 -23 5 40 12 56 39 27 328 -37 130 48 28 -23 5 53 130 14 34 -23 5 32 131 24 5 -23 6 38 129 39 38 -23 5 31
131 51 8 -25 55 37 12 57 2 24 328 -36 132 8 59 -25 56 22 131 33 23 -25 55 0 132 46 27 -25 58 14 130 56 46 -25 54 1
133 30 50 -29 6 25 12 57 24 21 327 -35 133 49 59 -29 7 58 133 11 49 -29 5 0 134 30 17 -29 11 38 132 32 43 -29 2 29
135 44 52 -32 50 48 12 57 47 17 326 -33 136 6 19 -32 53 54 135 23 38 -32 47 56 136 51 46 -33 1 2 134 40 13 -32 42 35
139 16 13 -37 45 33 12 58 10 11 324 -31 139 43 45 -37 53 0 138 49 21 -37 38 37 140 43 29 -38 10 27 137 55 20 -37 25 45
Use these links for further information:
[Planetary Occultations]
[Using the Predictions]
[Observing Details]
[Timing Details]
[Reporting Details]
[Report Form]
[Asteroid Occultation Results]
[Top of Page][Return to Home Page]