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Updated: 2005 NOV 30, 04:13 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 2005 Dec 06 UT, the 35 km diameter asteroid (1129) Neujmina will occult a 8.7 mag star in the constellation Corvus for observers along a path across southern Queensland and north-eastern NSW. Note the low elevation of the target star.
In the case of an occultation, the combined light of the asteroid and the star will drop by 7.6 mag to 16.3 mag (the magnitude of the asteroid) for at most only 1.2 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: .
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
141 7 4 -25 7 44 16 16 17 6 101 -36 142 15 26 -25 13 29 139 46 0 -24 59 9 145 47 15 -25 22 41 ... .. .. .. .. ..
144 50 25 -26 25 55 16 16 21 10 99 -33 145 38 6 -26 26 58 143 59 13 -26 24 6 148 24 3 -26 25 35 139 28 48 -26 2 8
147 32 34 -27 30 22 16 16 24 13 98 -30 148 12 2 -27 29 29 146 51 14 -27 30 50 150 35 9 -27 22 41 143 39 43 -27 26 52
149 46 26 -28 28 27 16 16 27 15 96 -28 150 21 15 -28 26 27 149 10 22 -28 30 11 152 30 10 -28 16 9 146 30 29 -28 33 38
151 43 5 -29 22 39 16 16 30 16 95 -27 152 14 50 -29 19 53 151 10 24 -29 25 14 154 13 56 -29 7 5 148 48 40 -29 33 5
153 27 52 -30 14 12 16 16 34 18 94 -25 153 57 27 -30 10 52 152 57 34 -30 17 23 155 49 17 -29 56 8 150 47 52 -30 28 16
155 3 53 -31 3 47 16 16 37 19 93 -23 155 31 49 -30 59 59 154 35 21 -31 7 26 157 18 4 -30 43 42 152 34 18 -31 20 36
156 33 6 -31 51 50 16 16 40 21 92 -22 156 59 44 -31 47 41 156 5 56 -31 55 53 158 41 33 -31 30 5 154 11 25 -32 10 51
157 56 49 -32 38 41 16 16 43 22 91 -21 158 22 26 -32 34 13 157 30 45 -32 43 4 160 0 38 -32 15 29 155 41 21 -32 59 30
159 16 2 -33 24 33 16 16 46 23 90 -19 159 40 48 -33 19 49 158 50 51 -33 29 13 161 16 1 -33 0 6 157 5 34 -33 46 55
160 31 28 -34 9 36 16 16 50 24 89 -18 160 55 32 -34 4 37 160 7 1 -34 14 31 162 28 15 -33 44 1 158 25 6 -34 33 19
161 43 40 -34 53 58 16 16 53 25 88 -17 162 7 9 -34 48 46 161 19 50 -34 59 6 163 37 46 -34 27 22 159 40 42 -35 18 53
162 53 5 -35 37 45 16 16 56 26 87 -16 163 16 4 -35 32 21 162 29 46 -35 43 5 164 44 54 -35 10 13 160 52 59 -36 3 45
164 0 5 -36 21 2 16 16 59 27 86 -14 164 22 39 -36 15 28 163 37 12 -36 26 34 165 49 57 -35 52 38 162 2 23 -36 48 2
165 4 57 -37 3 54 16 17 3 28 85 -13 165 27 9 -36 58 10 164 42 27 -37 9 36 166 53 9 -36 34 41 163 9 18 -37 31 49
166 7 57 -37 46 25 16 17 6 29 84 -12 166 29 50 -37 40 30 165 45 46 -37 52 16 167 54 43 -37 16 25 164 14 2 -38 15 12
167 9 16 -38 28 37 16 17 9 29 83 -11 167 30 54 -38 22 33 166 47 22 -38 34 38 168 54 49 -37 57 53 165 16 49 -38 58 12
168 9 6 -39 10 33 16 17 12 30 81 -10 168 30 31 -39 4 20 167 47 26 -39 16 42 169 53 37 -38 39 7 166 17 55 -39 40 55
169 7 37 -39 52 15 16 17 16 31 80 -9 169 28 50 -39 45 54 168 46 8 -39 58 34 170 51 14 -39 20 8 167 17 28 -40 23 22
170 4 56 -40 33 46 16 17 19 31 79 -8 170 26 0 -40 27 17 169 43 37 -40 40 13 171 47 49 -40 1 0 168 15 40 -41 5 36
171 1 12 -41 15 9 16 17 22 32 78 -7 171 22 7 -41 8 31 170 40 1 -41 21 43 172 43 28 -40 41 43 169 12 39 -41 47 40
171 56 29 -41 56 23 16 17 25 32 77 -6 172 17 19 -41 49 38 171 35 25 -42 3 6 173 38 16 -41 22 20 170 8 32 -42 29 36
172 50 56 -42 37 31 16 17 29 33 76 -5 173 11 41 -42 30 39 172 29 57 -42 44 22 174 32 19 -42 2 51 171 3 26 -43 11 24
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