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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 Nov 26 UT, the 88 km diameter asteroid (866) Fatme will occult a 8.8 mag star in the constellation Cancer for observers along a path across eastern Australia, passing very close to ADELAIDE.
In the case of an occultation, the combined light of the asteroid and the star will drop by 5.8 mag to 14.6 mag (the magnitude of the asteroid) for at most 22.2 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: Hipparcos , Tycho-2.
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
... .. .. -56 0 0 .. .. .. .. .. .. ... .. .. ... .. .. 128 22 25 ... .. ..
126 41 10 -55 0 0 15 47 29 0 47 -14 128 13 38 ... .. .. 130 4 34 ... .. ..
128 24 58 -54 0 0 15 47 30 2 46 -15 129 50 51 126 55 24 131 34 33 124 56 25
129 56 8 -53 0 0 15 47 32 3 45 -16 131 16 40 128 32 34 132 54 22 126 42 20
131 16 51 -52 0 0 15 47 36 4 43 -16 132 32 55 129 58 14 134 5 33 128 15 2
132 28 43 -51 0 0 15 47 40 6 42 -17 133 41 0 131 14 15 135 9 17 129 36 54
133 32 58 -50 0 0 15 47 46 7 42 -18 134 41 59 132 22 2 136 6 29 130 49 38
134 30 34 -49 0 0 15 47 52 8 41 -19 135 36 44 133 22 42 136 57 56 131 54 33
135 22 18 -48 0 0 15 48 0 9 40 -20 136 25 58 134 17 8 137 44 13 132 52 39
136 8 49 -47 0 0 15 48 8 10 40 -20 137 10 15 135 6 1 138 25 53 133 44 46
136 50 38 -46 0 0 15 48 17 11 39 -21 137 50 5 135 49 57 139 3 21 134 31 34
137 28 12 -45 0 0 15 48 26 13 39 -22 138 25 51 136 29 24 139 37 0 135 13 34
138 1 53 -44 0 0 15 48 37 14 38 -23 138 57 56 137 4 48 140 7 9 135 51 15
138 32 2 -43 0 0 15 48 48 15 38 -24 139 26 36 137 36 29 140 34 4 136 25 0
138 58 55 -42 0 0 15 48 59 16 38 -25 139 52 9 138 4 46 140 58 1 136 55 9
139 22 46 -41 0 0 15 49 12 17 38 -25 140 14 47 138 29 53 141 19 11 137 21 58
139 43 48 -40 0 0 15 49 25 18 38 -26 140 34 42 138 52 6 141 37 46 137 45 43
140 2 13 -39 0 0 15 49 38 19 37 -27 140 52 6 139 11 35 141 53 55 138 6 37
140 18 10 -38 0 0 15 49 52 19 37 -28 141 7 6 139 28 31 142 7 47 138 24 51
140 31 48 -37 0 0 15 50 7 20 37 -29 141 19 52 139 43 3 142 19 30 138 40 34
140 43 15 -36 0 0 15 50 23 21 37 -30 141 30 31 139 55 19 142 29 11 138 53 56
140 52 38 -35 0 0 15 50 38 22 37 -30 141 39 10 140 5 28 142 36 56 139 5 4
141 0 2 -34 0 0 15 50 55 23 38 -31 141 45 53 140 13 34 142 42 50 139 14 6
141 5 33 -33 0 0 15 51 12 24 38 -32 141 50 47 140 19 44 142 46 58 139 21 7
141 9 17 -32 0 0 15 51 30 25 38 -33 141 53 56 140 24 4 142 49 25 139 26 13
141 11 17 -31 0 0 15 51 48 26 38 -34 141 55 24 140 26 36 142 50 15 139 29 28
141 11 38 -30 0 0 15 52 6 27 38 -35 141 55 16 140 27 27 142 49 30 139 30 58
141 10 22 -29 0 0 15 52 26 27 39 -36 141 53 33 140 26 39 142 47 15 139 30 45
141 7 33 -28 0 0 15 52 45 28 39 -36 141 50 20 140 24 15 142 43 32 139 28 54
141 3 14 -27 0 0 15 53 5 29 39 -37 141 45 38 140 20 18 142 38 23 139 25 27
140 57 27 -26 0 0 15 53 26 30 40 -38 141 39 31 140 14 52 142 31 51 139 20 27
140 50 14 -25 0 0 15 53 47 30 40 -39 141 32 0 140 7 57 142 23 58 139 13 57
140 41 37 -24 0 0 15 54 9 31 40 -40 141 23 7 139 59 37 142 14 45 139 5 58
140 31 37 -23 0 0 15 54 31 32 41 -41 141 12 53 139 49 52 142 4 13 138 56 32
140 20 16 -22 0 0 15 54 54 33 41 -42 141 1 20 139 38 44 141 52 25 138 45 40
140 7 36 -21 0 0 15 55 17 33 42 -43 140 48 29 139 26 14 141 39 20 138 33 24
139 53 36 -20 0 0 15 55 41 34 42 -44 140 34 20 139 12 23 141 25 0 138 19 45
139 38 18 -19 0 0 15 56 5 35 43 -45 140 18 54 138 57 12 141 9 25 138 4 43
139 21 41 -18 0 0 15 56 29 35 44 -46 140 2 12 138 40 41 140 52 36 137 48 19
139 3 47 -17 0 0 15 56 54 36 44 -47 139 44 14 138 22 50 140 34 33 137 30 33
138 44 34 -16 0 0 15 57 19 36 45 -48 139 24 59 138 3 40 140 15 16 137 11 24
138 24 4 -15 0 0 15 57 45 37 46 -49 139 4 28 137 43 10 139 54 44 136 50 54
138 2 14 -14 0 0 15 58 12 37 46 -50 138 42 40 137 21 19 139 32 57 136 29 1
137 39 6 -13 0 0 15 58 38 38 47 -51 138 19 35 136 58 7 139 9 55 136 5 44
137 14 38 -12 0 0 15 59 5 38 48 -52 137 55 12 136 33 34 138 45 37 135 41 4
136 48 48 -11 0 0 15 59 33 39 49 -53 137 29 29 136 7 37 138 20 2 135 14 57
136 21 36 -10 0 0 16 0 1 39 50 -54 137 2 25 135 40 16 137 53 9 134 47 23
135 53 0 - 9 0 0 16 0 30 40 50 -55 136 34 0 135 11 28 137 24 55 134 18 21
135 22 58 - 8 0 0 16 0 58 40 51 -56 136 4 10 134 41 13 136 55 21 133 47 47
134 51 27 - 7 0 0 16 1 28 40 52 -57 135 32 54 134 9 26 136 24 22 133 15 40
134 18 26 - 6 0 0 16 1 57 40 53 -58 135 0 10 133 36 7 135 51 59 132 41 56
133 43 51 - 5 0 0 16 2 28 41 54 -59 134 25 55 133 1 12 135 18 6 132 6 33
133 7 39 - 4 0 0 16 2 58 41 55 -60 133 50 5 132 24 37 134 42 43 131 29 27
132 29 47 - 3 0 0 16 3 29 41 56 -61 133 12 37 131 46 18 134 5 45 130 50 33
131 50 9 - 2 0 0 16 4 1 41 57 -62 132 33 28 131 6 11 133 27 8 130 9 46
Use these links for further information:
[Planetary Occultations]
[Using the Predictions]
[Observing Details]
[Timing Details]
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[Report Form]
[Asteroid Occultation Results]
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