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Updated: 2005 JAN 07, 05:52 UT
Event Rank : 98
(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 Feb 06 UT, the 137 km diameter asteroid (762) Pulcova will occult a 11.7 mag star in the constellation Auriga for observers along a path across Alaska, Australia.
In the case of an occultation, the combined light of the asteroid and the star will drop by 1.7 mag to 13.2 mag (the magnitude of the asteroid) for at most 21.2 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, TMO astrometry for the asteroid kindly provided by Bill Owen, 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
121 22 32 -52 0 0 11 24 4 6 15 1 120 18 37 122 26 19 119 33 49 123 10 55
121 51 10 -51 0 0 11 24 2 7 15 0 120 48 41 122 53 33 120 4 53 123 37 10
122 18 58 -50 0 0 11 23 59 8 15 0 121 17 49 123 20 1 120 34 58 124 2 43
122 45 59 -49 0 0 11 23 57 9 14 -1 121 46 6 123 45 47 121 4 8 124 27 37
123 12 18 -48 0 0 11 23 54 10 14 -2 122 13 37 124 10 56 121 32 29 124 51 56
123 37 59 -47 0 0 11 23 50 11 14 -2 122 40 24 124 35 30 122 0 4 125 15 44
124 3 4 -46 0 0 11 23 47 12 13 -3 123 6 33 124 59 32 122 26 57 125 39 2
124 27 37 -45 0 0 11 23 42 13 13 -4 123 32 6 125 23 5 122 53 13 126 1 54
124 51 41 -44 0 0 11 23 38 15 13 -4 123 57 7 125 46 13 123 18 54 126 24 23
125 15 18 -43 0 0 11 23 34 16 13 -5 124 21 38 126 8 57 123 44 2 126 46 30
125 38 31 -42 0 0 11 23 29 17 12 -6 124 45 41 126 31 19 124 8 42 127 8 17
126 1 21 -41 0 0 11 23 23 18 12 -7 125 9 20 126 53 22 124 32 55 127 29 46
126 23 52 -40 0 0 11 23 18 19 12 -7 125 32 36 127 15 7 124 56 43 127 50 59
126 46 4 -39 0 0 11 23 12 20 12 -8 125 55 32 127 36 36 125 20 9 128 11 58
127 7 59 -38 0 0 11 23 6 21 11 -9 126 18 8 127 57 50 125 43 14 128 32 45
127 29 40 -37 0 0 11 22 59 22 11 -9 126 40 28 128 18 52 126 6 1 128 53 19
127 51 7 -36 0 0 11 22 52 23 11 -10 127 2 32 128 39 42 126 28 31 129 13 44
128 12 22 -35 0 0 11 22 45 24 11 -11 127 24 22 129 0 22 126 50 46 129 34 0
128 33 26 -34 0 0 11 22 38 25 10 -11 127 45 59 129 20 53 127 12 47 129 54 8
128 54 20 -33 0 0 11 22 30 26 10 -12 128 7 25 129 41 17 127 34 35 130 14 9
129 15 6 -32 0 0 11 22 22 27 10 -13 128 28 41 130 1 33 127 56 12 130 34 5
129 35 45 -31 0 0 11 22 14 28 10 -14 128 49 49 130 21 43 128 17 40 130 53 55
129 56 18 -30 0 0 11 22 6 29 10 -14 129 10 48 130 41 49 128 38 58 131 13 43
130 16 45 -29 0 0 11 21 57 30 9 -15 129 31 41 131 1 51 129 0 9 131 33 27
130 37 8 -28 0 0 11 21 48 31 9 -16 129 52 28 131 21 50 129 21 13 131 53 9
130 57 27 -27 0 0 11 21 38 32 9 -16 130 13 10 131 41 47 129 42 11 132 12 50
131 17 44 -26 0 0 11 21 29 33 9 -17 130 33 48 132 1 42 130 3 4 132 32 30
131 37 58 -25 0 0 11 21 19 34 9 -18 130 54 23 132 21 36 130 23 54 132 52 11
131 58 12 -24 0 0 11 21 9 35 8 -18 131 14 56 132 41 31 130 44 40 133 11 52
132 18 26 -23 0 0 11 20 58 36 8 -19 131 35 27 133 1 26 131 5 24 133 31 35
132 38 39 -22 0 0 11 20 47 37 8 -20 131 55 58 133 21 23 131 26 7 133 51 20
132 58 54 -21 0 0 11 20 37 38 8 -20 132 16 29 133 41 22 131 46 49 134 11 8
133 19 11 -20 0 0 11 20 25 39 8 -21 132 37 0 134 1 24 132 7 31 134 31 0
133 39 30 -19 0 0 11 20 14 40 7 -22 132 57 33 134 21 30 132 28 13 134 50 56
133 59 52 -18 0 0 11 20 2 41 7 -23 133 18 8 134 41 39 132 48 57 135 10 56
134 20 17 -17 0 0 11 19 50 42 7 -23 133 38 46 135 1 53 133 9 43 135 31 2
134 40 47 -16 0 0 11 19 38 43 7 -24 133 59 27 135 22 12 133 30 32 135 51 13
135 1 22 -15 0 0 11 19 25 44 6 -25 134 20 12 135 42 37 133 51 24 136 11 31
135 22 3 -14 0 0 11 19 13 45 6 -25 134 41 1 136 3 8 134 12 20 136 31 56
135 42 49 -13 0 0 11 19 0 46 6 -26 135 1 56 136 23 46 134 33 21 136 52 29
136 3 42 -12 0 0 11 18 47 47 6 -27 135 22 57 136 44 32 134 54 27 137 13 10
136 24 43 -11 0 0 11 18 33 48 5 -27 135 44 4 137 5 26 135 15 39 137 33 59
136 45 51 -10 0 0 11 18 20 49 5 -28 136 5 18 137 26 29 135 36 57 137 54 58
137 7 8 - 9 0 0 11 18 6 50 5 -29 136 26 39 137 47 41 135 58 22 138 16 7
137 28 34 - 8 0 0 11 17 52 51 5 -29 136 48 9 138 9 2 136 19 55 138 37 26
137 50 9 - 7 0 0 11 17 38 52 4 -30 137 9 48 138 30 35 136 41 36 138 58 56
138 11 55 - 6 0 0 11 17 23 53 4 -31 137 31 36 138 52 18 137 3 26 139 20 37
138 33 51 - 5 0 0 11 17 8 54 4 -31 137 53 34 139 14 13 137 25 25 139 42 31
138 55 59 - 4 0 0 11 16 54 56 3 -32 138 15 43 139 36 20 137 47 35 140 4 38
139 18 19 - 3 0 0 11 16 39 57 3 -32 138 38 3 139 58 40 138 9 55 140 26 58
139 40 52 - 2 0 0 11 16 23 58 2 -33 139 0 35 140 21 14 138 32 27 140 49 33
140 3 38 - 1 0 0 11 16 8 59 2 -34 139 23 20 140 44 2 138 55 10 141 12 22
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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