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Updated: 2012 OCT 25, 22:34 UT
Event Rank : 52
(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 2012 Nov 18 UT, the 26 km diameter asteroid (1296) Andree will occult a 10.3 mag star in the constellation Taurus for observers along a path across New Zealand passing near Gisborne and Wanganui.
In the case of an occultation, the combined light of the asteroid and the star will drop by 4.1 mag to 14.4 mag (the magnitude of the asteroid) for at most 4.3 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: 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 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
156 6 21 -49 0 0 15 48 9 20 351 -14 155 30 56 156 42 10 154 5 31 158 12 12
157 38 5 -48 0 0 15 47 48 21 350 -15 157 2 16 158 14 21 155 35 58 159 45 37
159 14 16 -47 0 0 15 47 25 22 348 -15 158 37 54 159 51 7 157 10 23 161 24 1
160 55 23 -46 0 0 15 47 1 23 347 -15 160 18 18 161 33 0 158 49 12 163 8 3
162 42 6 -45 0 0 15 46 34 23 345 -15 162 4 6 163 20 42 160 32 59 164 58 28
164 35 14 -44 0 0 15 46 6 24 343 -15 163 56 3 165 15 6 162 22 22 166 56 21
166 35 51 -43 0 0 15 45 36 25 341 -14 165 55 11 167 17 19 164 18 13 169 3 5
Latitude Latitude Latitude Latitude
167 0 0 -42 48 28 15 45 30 25 341 -14 -42 28 59 -43 8 15 -41 42 10 -43 58 12
168 0 0 -42 20 31 15 45 15 25 340 -14 -42 1 16 -42 40 2 -41 15 1 -43 29 17
169 0 0 -41 53 31 15 45 0 25 339 -14 -41 34 31 -42 12 48 -40 48 49 -43 1 24
170 0 0 -41 27 30 15 44 45 25 338 -14 -41 8 43 -41 46 32 -40 23 31 -42 34 32
171 0 0 -41 2 25 15 44 29 25 337 -13 -40 43 50 -41 21 15 -39 59 7 -42 8 40
172 0 0 -40 38 17 15 44 14 25 336 -13 -40 19 54 -40 56 55 -39 35 38 -41 43 48
173 0 0 -40 15 5 15 43 59 25 335 -13 -39 56 53 -40 33 31 -39 13 3 -41 19 54
174 0 0 -39 52 49 15 43 44 25 334 -13 -39 34 47 -40 11 4 -38 51 20 -40 56 59
175 0 0 -39 31 28 15 43 29 25 333 -12 -39 13 36 -39 49 33 -38 30 31 -40 35 1
176 0 0 -39 11 2 15 43 14 25 332 -12 -38 53 19 -39 28 57 -38 10 35 -40 14 1
177 0 0 -38 51 30 15 43 0 25 331 -11 -38 33 55 -39 9 17 -37 51 32 -39 53 57
178 0 0 -38 32 52 15 42 45 25 330 -11 -38 15 26 -38 50 31 -37 33 21 -39 34 49
179 0 0 -38 15 8 15 42 30 25 329 -11 -37 57 50 -38 32 39 -37 16 2 -39 16 38
180 0 0 -37 58 18 15 42 16 25 328 -10 -37 41 6 -38 15 42 -36 59 35 -38 59 22
-179 0 0 -37 42 22 15 42 1 25 327 -10 -37 25 16 -37 59 39 -36 44 0 -38 43 1
-178 0 0 -37 27 18 15 41 47 25 326 -9 -37 10 19 -37 44 29 -36 29 16 -38 27 35
-177 0 0 -37 13 8 15 41 33 24 325 -9 -36 56 14 -37 30 13 -36 15 24 -38 13 4
-176 0 0 -36 59 50 15 41 19 24 324 -8 -36 43 2 -37 16 50 -36 2 24 -37 59 28
Uncertainty in time = +/- 7 secs
Prediction of 2012 Oct 26.0
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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