|
|
Updated: 2007 MAR 18, 03:03 UT
Event Rank : 8
(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 2007 Apr 14 UT, the 17 km diameter asteroid (5632) Ingelehmann will occult a 10.0 mag star in the constellation Serpens for observers along a narrow, very large uncertainty path across eastern Western Australia.
In the case of an occultation, the combined light of the asteroid and the star will drop by 5.9 mag to 15.9 mag (the magnitude of the asteroid) for at most 4.0 seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, 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 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
118 7 33 -15 40 48 15 35 3 23 100 -80 118 18 5 -15 40 10 117 56 56 -15 41 24 120 53 29 -15 28 6 115 1 11 -15 47 35
119 4 35 -16 38 26 15 35 27 24 100 -80 119 14 47 -16 37 42 118 54 18 -16 39 9 121 45 50 -16 24 5 116 5 9 -16 47 32
119 57 47 -17 35 3 15 35 50 25 99 -80 120 7 43 -17 34 13 119 47 47 -17 35 52 122 35 9 -17 19 15 117 4 1 -17 46 6
120 47 40 -18 30 47 15 36 14 26 98 -80 120 57 22 -18 29 51 120 37 55 -18 31 41 123 21 46 -18 13 42 117 58 34 -18 43 32
121 34 39 -19 25 46 15 36 38 27 98 -79 121 44 9 -19 24 46 121 25 5 -19 26 45 124 6 0 -19 7 32 118 49 25 -19 40 0
122 19 2 -20 20 6 15 37 1 28 97 -79 122 28 23 -20 19 2 122 9 39 -20 21 9 124 48 4 -20 0 50 119 37 3 -20 35 38
123 1 7 -21 13 52 15 37 25 29 96 -78 123 10 20 -21 12 44 122 51 52 -21 14 59 125 28 10 -20 53 39 120 21 51 -21 30 35
123 41 6 -22 7 8 15 37 49 30 96 -77 123 50 11 -22 5 57 123 31 57 -22 8 19 126 6 29 -21 46 3 121 4 7 -22 24 56
124 19 10 -22 59 59 15 38 12 31 95 -76 124 28 10 -22 58 44 124 10 8 -23 1 13 126 43 11 -22 38 5 121 44 6 -23 18 45
124 55 29 -23 52 27 15 38 36 31 94 -76 125 4 24 -23 51 9 124 46 32 -23 53 44 127 18 21 -23 29 47 122 22 0 -24 12 7
125 30 12 -24 44 35 15 39 0 32 93 -75 125 39 3 -24 43 15 125 21 18 -24 45 55 127 52 7 -24 21 13 122 58 1 -25 5 5
126 3 24 -25 36 26 15 39 23 33 92 -74 126 12 12 -25 35 3 125 54 34 -25 37 48 128 24 35 -25 12 24 123 32 17 -25 57 43
126 35 13 -26 28 3 15 39 47 33 92 -73 126 43 59 -26 26 37 126 26 25 -26 29 27 128 55 50 -26 3 22 124 4 56 -26 50 3
127 5 44 -27 19 26 15 40 11 34 91 -72 127 14 27 -27 17 59 126 56 58 -27 20 53 129 25 56 -26 54 10 124 36 4 -27 42 8
127 35 0 -28 10 40 15 40 34 34 90 -71 127 43 43 -28 9 10 127 26 16 -28 12 9 129 54 57 -27 44 48 125 5 48 -28 34 0
128 3 7 -29 1 44 15 40 58 35 89 -70 128 11 49 -29 0 12 127 54 23 -29 3 15 130 22 57 -28 35 19 125 34 11 -29 25 42
128 30 8 -29 52 41 15 41 22 35 88 -69 128 38 50 -29 51 7 128 21 24 -29 54 14 130 49 59 -29 25 43 126 1 18 -30 17 14
128 56 6 -30 43 33 15 41 45 36 87 -68 129 4 48 -30 41 57 128 47 22 -30 45 8 131 16 6 -30 16 3 126 27 12 -31 8 40
129 21 3 -31 34 20 15 42 9 36 86 -67 129 29 46 -31 32 42 129 12 18 -31 35 57 131 41 19 -31 6 20 126 51 58 -32 0 1
129 45 3 -32 25 5 15 42 33 36 85 -67 129 53 47 -32 23 25 129 36 16 -32 26 44 132 5 42 -31 56 36 127 15 37 -32 51 17
130 8 6 -33 15 49 15 42 56 37 85 -66 130 16 52 -33 14 7 129 59 18 -33 17 30 132 29 15 -32 46 50 127 38 11 -33 42 32
130 30 15 -34 6 32 15 43 20 37 84 -65 130 39 4 -34 4 49 130 21 25 -34 8 15 132 52 2 -33 37 5 127 59 43 -34 33 46
130 51 32 -34 57 18 15 43 44 37 83 -64 131 0 23 -34 55 33 130 42 39 -34 59 2 133 14 2 -34 27 22 128 20 15 -35 25 1
131 11 57 -35 48 5 15 44 7 38 82 -63 131 20 51 -35 46 19 131 3 1 -35 49 52 133 35 18 -35 17 42 128 39 46 -36 16 17
131 31 32 -36 38 57 15 44 31 38 81 -62 131 40 29 -36 37 9 131 22 32 -36 40 45 133 55 50 -36 8 6 128 58 19 -37 7 37
131 50 16 -37 29 54 15 44 55 38 80 -61 131 59 18 -37 28 4 131 41 12 -37 31 44 134 15 40 -36 58 36 129 15 54 -37 59 2
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]