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THE UPDATED PATH
(Note: The time given in the line below is for the midpoint of the path as it crosses the Earth - please see the minute markers on the map to determine the approximate the time for your location)
On 2003 Oct 14 UT, the 44 km diameter asteroid (1463) Nordenmarkia will occult a 7.2 mag star in the constellation Perseus for observers along a path across Australia.
Note: The path passes across, or very close to, Toowoomba, Brisbane, Bundaberg and Rockhampton.
In the case of an occultation, the combined light of the asteroid and the star will drop by 7.2 mag to 14.4 mag (the magnitude of the asteroid) for at most 11.4 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: Hipparcos .
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
160 10 5 -58 0 0 15 12 18 0 9 -19 160 46 45 159 33 6 160 46 45 159 33 6
160 25 51 -57 0 0 15 12 18 1 9 -20 161 1 28 159 49 58 161 1 28 159 49 58
160 38 18 -56 0 0 15 12 19 2 9 -21 161 12 56 160 3 24 161 12 56 160 3 24
160 47 42 -55 0 0 15 12 21 3 8 -21 161 21 27 160 13 43 161 21 27 160 13 43
160 54 18 -54 0 0 15 12 24 4 8 -22 161 27 13 160 21 8 161 27 13 160 21 8
160 58 16 -53 0 0 15 12 28 5 8 -23 161 30 26 160 25 53 161 30 26 160 25 53
160 59 49 -52 0 0 15 12 32 6 8 -24 161 31 16 160 28 8 161 31 16 160 28 8
160 59 4 -51 0 0 15 12 37 7 8 -25 161 29 53 160 28 3 161 29 53 160 28 3
160 56 11 -50 0 0 15 12 43 8 8 -25 161 26 24 160 25 46 161 26 24 160 25 46
160 51 15 -49 0 0 15 12 50 9 8 -26 161 20 56 160 21 24 161 20 56 160 21 24
160 44 25 -48 0 0 15 12 57 10 8 -27 161 13 35 160 15 4 161 13 35 160 15 4
160 35 44 -47 0 0 15 13 5 11 9 -28 161 4 26 160 6 52 161 4 26 160 6 52
160 25 18 -46 0 0 15 13 14 12 9 -29 160 53 34 159 56 53 160 53 34 159 56 53
160 13 12 -45 0 0 15 13 24 13 9 -30 160 41 3 159 45 11 160 41 3 159 45 11
159 59 27 -44 0 0 15 13 34 14 9 -31 160 26 56 159 31 49 160 26 56 159 31 49
159 44 9 -43 0 0 15 13 46 15 9 -31 160 11 17 159 16 52 160 11 17 159 16 52
159 27 20 -42 0 0 15 13 58 16 10 -32 159 54 9 159 0 21 159 54 9 159 0 21
159 9 2 -41 0 0 15 14 10 17 10 -33 159 35 33 158 42 20 159 35 33 158 42 20
158 49 16 -40 0 0 15 14 24 18 10 -34 159 15 32 158 22 51 159 15 32 158 22 51
158 28 6 -39 0 0 15 14 38 19 10 -35 158 54 8 158 1 55 158 54 8 158 1 55
158 5 32 -38 0 0 15 14 53 20 11 -36 158 31 20 157 39 34 158 31 20 157 39 34
157 41 35 -37 0 0 15 15 9 21 11 -37 158 7 12 157 15 49 158 7 12 157 15 49
157 16 16 -36 0 0 15 15 26 22 12 -38 157 41 42 156 50 40 157 41 42 156 50 40
156 49 35 -35 0 0 15 15 43 23 12 -39 157 14 53 156 24 9 157 14 53 156 24 9
156 21 34 -34 0 0 15 16 1 23 12 -40 156 46 44 155 56 15 156 46 44 155 56 15
155 52 11 -33 0 0 15 16 20 24 13 -41 156 17 14 155 26 59 156 17 14 155 26 59
155 21 27 -32 0 0 15 16 40 25 13 -42 155 46 25 154 56 20 155 46 25 154 56 20
154 49 21 -31 0 0 15 17 1 26 14 -43 155 14 15 154 24 18 155 14 15 154 24 18
154 15 53 -30 0 0 15 17 22 27 14 -44 154 40 44 153 50 53 154 40 44 153 50 53
153 41 1 -29 0 0 15 17 44 28 15 -45 154 5 50 153 16 2 154 5 50 153 16 2
153 4 44 -28 0 0 15 18 7 29 16 -46 153 29 32 152 39 46 153 29 32 152 39 46
152 27 0 -27 0 0 15 18 31 30 16 -47 152 51 50 152 2 2 152 51 50 152 2 2
151 47 49 -26 0 0 15 18 56 30 17 -48 152 12 40 151 22 48 152 12 40 151 22 48
151 7 7 -25 0 0 15 19 22 31 18 -49 151 32 2 150 42 2 151 32 2 150 42 2
150 24 52 -24 0 0 15 19 48 32 18 -50 150 49 52 149 59 42 150 49 52 149 59 42
149 41 2 -23 0 0 15 20 15 33 19 -52 150 6 8 149 15 45 150 6 8 149 15 45
148 55 32 -22 0 0 15 20 43 33 20 -53 149 20 46 148 30 7 149 20 46 148 30 7
148 8 20 -21 0 0 15 21 12 34 21 -54 148 33 43 147 42 45 148 33 43 147 42 45
147 19 21 -20 0 0 15 21 42 35 22 -55 147 44 55 146 53 34 147 44 55 146 53 34
146 28 30 -19 0 0 15 22 13 35 23 -56 146 54 17 146 2 30 146 54 17 146 2 30
145 35 42 -18 0 0 15 22 45 36 24 -57 146 1 45 145 9 26 146 1 45 145 9 26
144 40 50 -17 0 0 15 23 18 37 25 -59 145 7 11 144 14 17 145 7 11 144 14 17
143 43 49 -16 0 0 15 23 52 37 26 -60 144 10 29 143 16 54 144 10 29 143 16 54
142 44 29 -15 0 0 15 24 27 38 27 -61 143 11 32 142 17 11 143 11 32 142 17 11
141 42 42 -14 0 0 15 25 3 38 28 -63 142 10 10 141 14 57 142 10 10 141 14 57
Latitude Latitude Latitude Latitude
140 0 0 -12 25 32 15 26 2 39 30 -65 -12 0 25 -12 50 57 -12 0 25 -12 50 57
139 0 0 -11 33 12 15 26 36 39 31 -66 -11 8 35 -11 58 6 -11 8 35 -11 58 6
138 0 0 -10 42 52 15 27 10 40 32 -67 -10 18 43 -11 7 16 -10 18 43 -11 7 16
137 0 0 - 9 54 27 15 27 43 40 33 -68 - 9 30 44 -10 18 24 - 9 30 44 -10 18 24
136 0 0 - 9 7 52 15 28 16 40 35 -69 - 8 44 34 - 9 31 25 - 8 44 34 - 9 31 25
135 0 0 - 8 23 4 15 28 48 40 36 -70 - 8 0 9 - 8 46 13 - 8 0 9 - 8 46 13
134 0 0 - 7 40 0 15 29 20 40 37 -71 - 7 17 26 - 8 2 47 - 7 17 26 - 8 2 47
133 0 0 - 6 58 35 15 29 52 40 38 -72 - 6 36 20 - 7 21 1 - 6 36 20 - 7 21 1
132 0 0 - 6 18 46 15 30 23 40 39 -73 - 5 56 50 - 6 40 54 - 5 56 50 - 6 40 54
131 0 0 - 5 40 32 15 30 54 40 40 -74 - 5 18 53 - 6 2 22 - 5 18 53 - 6 2 22
130 0 0 - 5 3 49 15 31 25 40 41 -75 - 4 42 26 - 5 25 22 - 4 42 26 - 5 25 22
129 0 0 - 4 28 35 15 31 55 40 42 -76 - 4 7 27 - 4 49 53 - 4 7 27 - 4 49 53
128 0 0 - 3 54 47 15 32 24 40 43 -77 - 3 33 54 - 4 15 51 - 3 33 54 - 4 15 51
127 0 0 - 3 22 25 15 32 54 39 43 -78 - 3 1 45 - 3 43 15 - 3 1 45 - 3 43 15
126 0 0 - 2 51 25 15 33 22 39 44 -79 - 2 30 58 - 3 12 2 - 2 30 58 - 3 12 2
125 0 0 - 2 21 47 15 33 51 39 45 -79 - 2 1 31 - 2 42 12 - 2 1 31 - 2 42 12
124 0 0 - 1 53 28 15 34 19 39 46 -80 - 1 33 23 - 2 13 42 - 1 33 23 - 2 13 42
123 0 0 - 1 26 27 15 34 46 38 47 -80 - 1 6 33 - 1 46 30 - 1 6 33 - 1 46 30
122 0 0 - 1 0 43 15 35 14 38 47 -81 - 0 40 58 - 1 20 37 - 0 40 58 - 1 20 37
121 0 0 - 0 36 14 15 35 40 38 48 -81 - 0 16 38 - 0 55 59 - 0 16 38 - 0 55 59
120 0 0 - 0 13 0 15 36 7 37 49 -81 0 6 28 - 0 32 36 0 6 28 - 0 32 36
119 0 0 0 9 1 15 36 32 37 49 -81 0 28 21 - 0 10 27 0 28 21 - 0 10 27
118 0 0 0 29 50 15 36 58 36 50 -81 0 49 3 0 10 29 0 49 3 0 10 29
117 0 0 0 49 28 15 37 23 36 51 -81 1 8 34 0 30 14 1 8 34 0 30 14
116 0 0 1 7 55 15 37 47 35 51 -81 1 26 55 0 48 47 1 26 55 0 48 47
115 0 0 1 25 12 15 38 12 35 52 -80 1 44 7 1 6 10 1 44 7 1 6 10
114 0 0 1 41 20 15 38 35 34 52 -80 2 0 10 1 22 23 2 0 10 1 22 23
113 0 0 1 56 20 15 38 59 34 53 -79 2 15 5 1 37 28 2 15 5 1 37 28
112 0 0 2 10 12 15 39 22 33 53 -79 2 28 53 1 51 24 2 28 53 1 51 24
111 0 0 2 22 56 15 39 44 33 54 -78 2 41 33 2 4 12 2 41 33 2 4 12
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