|
|
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 the time for your location)
On 2004 Mar 20 UT, the 46 km diameter asteroid (1614) Goldschmidt will occult a 11.1 mag star in the constellation Libra for observers along a path across E Australia.
In the case of an occultation, the combined light of the asteroid and the star will drop by 4.3 mag to 15.4 mag (the magnitude of the asteroid) for at most 5.4 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 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
... .. .. 16 0 0 .. .. .. .. .. .. ... .. .. ... .. .. 116 53 42 ... .. ..
114 22 28 15 0 0 13 41 14 4 93 -46 116 34 16 ... .. .. 120 43 40 ... .. ..
119 9 42 14 0 0 13 41 3 8 94 -50 120 26 7 117 41 33 123 29 31 ... .. ..
122 11 43 13 0 0 13 40 51 11 95 -53 123 11 27 121 6 56 125 44 27 117 10 2
124 34 28 12 0 0 13 40 38 13 95 -56 125 25 24 123 40 33 127 39 58 120 40 18
126 34 30 11 0 0 13 40 26 15 95 -58 127 19 48 125 47 9 129 21 42 123 14 51
128 19 4 10 0 0 13 40 13 17 95 -60 129 0 24 127 36 13 130 52 59 125 21 20
129 52 11 9 0 0 13 40 0 19 95 -62 130 30 32 129 12 38 132 15 54 127 9 52
131 16 19 8 0 0 13 39 48 20 95 -63 131 52 20 130 39 18 133 31 55 128 45 33
132 33 6 7 0 0 13 39 35 21 95 -65 133 7 14 131 58 8 134 42 6 130 11 23
133 43 44 6 0 0 13 39 21 23 95 -66 134 16 19 133 10 25 135 47 14 131 29 18
134 49 5 5 0 0 13 39 8 24 94 -67 135 20 22 134 17 9 136 47 57 132 40 39
135 49 49 4 0 0 13 38 55 25 94 -68 136 20 0 135 19 4 137 44 43 133 46 25
136 46 27 3 0 0 13 38 42 26 94 -69 137 15 42 136 16 42 138 37 57 134 47 20
137 39 26 2 0 0 13 38 29 27 93 -70 138 7 52 137 10 33 139 27 57 135 43 58
138 29 5 1 0 0 13 38 15 27 93 -71 138 56 48 138 0 57 140 15 1 136 36 47
139 15 42 0 0 0 13 38 2 28 92 -72 139 42 47 138 48 12 140 59 21 137 26 8
139 59 30 - 1 0 0 13 37 48 29 92 -73 140 26 3 139 32 35 141 41 9 138 12 20
140 40 42 - 2 0 0 13 37 35 30 91 -73 141 6 46 140 14 17 142 20 36 138 55 38
141 19 27 - 3 0 0 13 37 22 30 90 -74 141 45 6 140 53 29 142 57 48 139 36 14
141 55 56 - 4 0 0 13 37 8 31 90 -74 142 21 12 141 30 21 143 32 55 140 14 19
142 30 14 - 5 0 0 13 36 55 31 89 -74 142 55 11 142 4 59 144 6 1 140 50 1
143 2 28 - 6 0 0 13 36 41 32 89 -74 143 27 8 142 37 31 144 37 13 141 23 29
143 32 44 - 7 0 0 13 36 28 32 88 -74 143 57 10 143 8 3 145 6 34 141 54 49
144 1 7 - 8 0 0 13 36 14 32 87 -74 144 25 20 143 36 38 145 34 10 142 24 7
144 27 40 - 9 0 0 13 36 1 33 86 -74 144 51 42 144 3 23 146 0 4 142 51 27
144 52 27 -10 0 0 13 35 48 33 86 -74 145 16 20 144 28 19 146 24 18 143 16 53
145 15 31 -11 0 0 13 35 34 33 85 -73 145 39 16 144 51 30 146 46 55 143 40 28
145 36 53 -12 0 0 13 35 21 34 84 -73 146 0 34 145 12 59 147 7 57 144 2 16
145 56 37 -13 0 0 13 35 8 34 84 -72 146 20 13 145 32 48 147 27 25 144 22 18
146 14 44 -14 0 0 13 34 54 34 83 -72 146 38 17 145 50 57 147 45 22 144 40 37
146 31 14 -15 0 0 13 34 41 34 82 -71 146 54 46 146 7 29 148 1 48 144 57 14
146 46 9 -16 0 0 13 34 28 34 81 -71 147 9 41 146 22 23 148 16 44 145 12 9
146 59 28 -17 0 0 13 34 15 34 81 -70 147 23 2 146 35 41 148 30 10 145 25 23
147 11 13 -18 0 0 13 34 2 34 80 -69 147 34 49 146 47 23 148 42 6 145 36 56
147 21 22 -19 0 0 13 33 49 34 79 -68 147 45 2 146 57 27 148 52 31 145 46 48
147 29 54 -20 0 0 13 33 36 34 79 -67 147 53 41 147 5 54 149 1 26 145 54 58
147 36 50 -21 0 0 13 33 23 34 78 -67 148 0 44 147 12 43 149 8 49 146 1 25
147 42 7 -22 0 0 13 33 10 33 77 -66 148 6 9 147 17 51 149 14 38 146 6 8
147 45 44 -23 0 0 13 32 58 33 77 -65 148 9 56 147 21 18 149 18 53 146 9 4
147 47 38 -24 0 0 13 32 45 33 76 -64 148 12 2 147 23 1 149 21 31 146 10 10
147 47 48 -25 0 0 13 32 32 33 75 -63 148 12 25 147 22 56 149 22 31 146 9 25
147 46 9 -26 0 0 13 32 20 32 75 -62 148 11 1 147 21 2 149 21 48 146 6 45
147 42 38 -27 0 0 13 32 7 32 74 -61 148 7 47 147 17 15 149 19 20 146 2 5
147 37 12 -28 0 0 13 31 55 32 74 -60 148 2 39 147 11 29 149 15 4 145 55 21
147 29 45 -29 0 0 13 31 43 31 73 -59 147 55 32 147 3 41 149 8 55 145 46 28
147 20 12 -30 0 0 13 31 31 31 73 -58 147 46 22 146 53 44 149 0 48 145 35 19
147 8 26 -31 0 0 13 31 19 30 72 -57 147 35 3 146 41 33 148 50 39 145 21 48
146 54 22 -32 0 0 13 31 7 30 72 -56 147 21 26 146 26 59 148 38 19 145 5 45
146 37 50 -33 0 0 13 30 55 29 72 -55 147 5 26 146 9 56 148 23 44 144 47 3
146 18 42 -34 0 0 13 30 43 28 71 -54 146 46 52 145 50 12 148 6 44 144 25 30
145 56 47 -35 0 0 13 30 32 28 71 -53 146 25 35 145 27 38 147 47 11 144 0 53
145 31 53 -36 0 0 13 30 20 27 71 -52 146 1 22 145 1 59 147 24 54 143 32 58
145 3 45 -37 0 0 13 30 9 26 71 -51 145 34 2 144 33 3 146 59 40 143 1 29
144 32 7 -38 0 0 13 29 58 26 71 -50 145 3 17 144 0 31 146 31 18 142 26 5
Latitude Latitude Latitude Latitude
143 0 0 -40 23 54 13 29 32 24 71 -47 -41 9 32 -39 36 11 -43 12 19 -37 2 40
142 0 0 -41 40 28 13 29 18 22 71 -46 -42 22 18 -40 57 3 -44 16 5 -38 40 11
141 0 0 -42 47 28 13 29 6 21 72 -44 -43 26 21 -42 7 19 -45 13 1 -40 2 24
140 0 0 -43 46 54 13 28 56 20 72 -43 -44 23 26 -43 9 19 -46 4 17 -41 13 29
139 0 0 -44 40 8 13 28 47 19 73 -42 -45 14 45 -44 4 38 -46 50 44 -42 16 0
138 0 0 -45 28 10 13 28 38 18 73 -41 -46 1 10 -44 54 24 -47 33 3 -43 11 37
137 0 0 -46 11 44 13 28 31 18 74 -40 -46 43 23 -45 39 26 -48 11 44 -44 1 32
136 0 0 -46 51 26 13 28 25 17 74 -39 -47 21 54 -46 20 23 -48 47 12 -44 46 36
135 0 0 -47 27 43 13 28 18 16 75 -38 -47 57 10 -46 57 45 -49 19 48 -45 27 30
134 0 0 -48 0 58 13 28 13 15 76 -37 -48 29 31 -47 31 56 -49 49 47 -46 4 45
133 0 0 -48 31 28 13 28 8 14 76 -36 -48 59 13 -48 3 16 -50 17 24 -46 38 45
132 0 0 -48 59 29 13 28 3 13 77 -36 -49 26 32 -48 32 1 -50 42 51 -47 9 51
131 0 0 -49 25 13 13 27 59 13 78 -35 -49 51 39 -48 58 24 -51 6 18 -47 38 19
130 0 0 -49 48 51 13 27 55 12 79 -34 -50 14 43 -49 22 37 -51 27 53 -48 4 22
129 0 0 -50 10 32 13 27 52 11 79 -34 -50 35 55 -49 44 50 -51 47 44 -48 28 13
128 0 0 -50 30 25 13 27 49 11 80 -33 -50 55 21 -50 5 10 -52 5 57 -48 50 2
127 0 0 -50 48 35 13 27 46 10 81 -32 -51 13 7 -50 23 46 -52 22 39 -49 9 56
126 0 0 -51 5 10 13 27 43 9 82 -32 -51 29 20 -50 40 43 -52 37 53 -49 28 3
125 0 0 -51 20 13 13 27 41 9 82 -31 -51 44 4 -50 56 6 -52 51 45 -49 44 30
124 0 0 -51 33 50 13 27 38 8 83 -30 -51 57 24 -51 10 1 -53 4 17 -49 59 20
123 0 0 -51 46 4 13 27 36 7 84 -30 -52 9 22 -51 22 31 -53 15 34 -50 12 40
122 0 0 -51 56 59 13 27 35 7 85 -29 -52 20 3 -51 33 40 -53 25 38 -50 24 33
121 0 0 -52 6 38 13 27 33 6 85 -29 -52 29 30 -51 43 31 -53 34 31 -50 35 3
120 0 0 -52 15 2 13 27 31 5 86 -28 -52 37 44 -51 52 7 -53 42 17 -50 44 13
119 0 0 -52 22 15 13 27 30 5 87 -28 -52 44 47 -51 59 29 -53 48 55 -50 52 4
118 0 0 -52 28 18 13 27 29 4 88 -27 -52 50 42 -52 5 40 -53 54 29 -50 58 40
117 0 0 -52 33 12 13 27 28 4 89 -27 -52 55 30 -52 10 41 -53 59 0 -51 4 1
116 0 0 -52 36 59 13 27 27 3 89 -26 -52 59 12 -52 14 33 -54 2 27 -51 8 10
115 0 0 -52 39 40 13 27 27 2 90 -26 -53 1 49 -52 17 18 -54 4 54 -51 11 8
114 0 0 -52 41 15 13 27 26 2 91 -25 -53 3 22 -52 18 56 -54 6 19 -51 12 55
113 0 0 -52 41 46 13 27 26 1 92 -25 -53 3 50 -52 19 28 -54 6 43 -51 13 33
112 0 0 -52 41 11 13 27 26 0 92 -24 -53 3 15 -52 18 54 -54 6 7 -51 13 0
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]