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Updated: 2008 OCT 01, 04:53 UT
Event Rank : 28
(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 14 UT, the 24 km diameter asteroid (1372) Haremari will occult a 10.4 mag star in the constellation Sagittarius for observers along a path running up the length of New Zealand, centred over Dunedin, Nelson and Taupo, but with a chance of a path shift over almost anywhere in New Zealand.
In the case of an occultation, the combined light of the asteroid and the star will drop by 7.2 mag to 17.6 mag (the magnitude of the asteroid) for at most 1.3 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 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
169 6 19 -46 55 36 10 32 46 40 271 -29 168 52 36 -46 53 16 169 20 6 -46 57 54 167 48 28 -46 41 53 170 26 23 -47 8 25
169 52 14 -45 59 9 10 32 52 40 269 -30 169 38 37 -45 56 55 170 5 54 -46 1 21 168 35 0 -45 45 58 171 11 38 -46 11 26
170 38 41 -45 2 21 10 32 58 39 268 -31 170 25 11 -45 0 13 170 52 16 -45 4 28 169 22 1 -44 49 43 171 57 32 -45 14 4
171 25 47 -44 5 9 10 33 4 38 267 -32 171 12 21 -44 3 7 171 39 17 -44 7 10 170 9 34 -43 53 5 172 44 9 -44 16 17
172 13 37 -43 7 30 10 33 10 38 265 -33 172 0 15 -43 5 33 172 27 2 -43 9 24 170 57 47 -42 56 0 173 31 35 -43 18 2
173 2 16 -42 9 19 10 33 16 37 264 -35 172 48 57 -42 7 30 173 15 38 -42 11 8 171 46 44 -41 58 26 174 19 57 -42 19 14
173 51 51 -41 10 35 10 33 22 36 263 -36 173 38 35 -41 8 52 174 5 12 -41 12 16 172 36 31 -41 0 18 175 9 21 -41 19 51
174 42 30 -40 11 12 10 33 28 35 262 -37 174 29 15 -40 9 36 174 55 50 -40 12 47 173 27 17 -40 1 35 175 59 54 -40 19 47
175 34 20 -39 11 7 10 33 35 35 260 -38 175 21 5 -39 9 38 175 47 40 -39 12 34 174 19 7 -39 2 10 176 51 46 -39 18 58
176 27 31 -38 10 13 10 33 41 34 259 -39 176 14 14 -38 8 51 176 40 52 -38 11 32 175 12 11 -38 2 0 177 45 7 -38 17 18
177 22 14 -37 8 25 10 33 47 33 258 -41 177 8 54 -37 7 12 177 35 37 -37 9 35 176 6 39 -37 0 58 178 40 7 -37 14 40
Uncertainty in time = +/- 4 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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