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Updated: 2014 Jun 22, 08:14 UT
Event Rank : 22
(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 2014 Jul 02 UT, the 17 km diameter asteroid (5081) Sanguin will occult a 10.3 mag star in the constellation Ophiuchus for observers along a path running down the west coast of New Zealand, passing near Auckland and Invercargill.
In the case of an occultation, the combined light of the asteroid and the star will drop by 4.8 mag to 15.1 mag (the magnitude of the asteroid) for at most 2.5 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.
Occultation of TYC 6796-01459-1 by 5081 Sanguin on 2014 Jul 2
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
174 50 26 -34 5 30 15 28 43 23 257 -48 175 3 21 -34 4 58 174 37 37 -34 5 59 176 23 2 -34 0 52 173 22 11 -34 8 9
173 59 41 -34 59 30 15 28 56 24 257 -49 174 12 24 -34 59 7 173 47 4 -34 59 51 175 30 42 -34 55 59 172 32 42 -35 1 11
173 11 16 -35 52 36 15 29 9 25 258 -50 173 23 48 -35 52 21 172 58 48 -35 52 49 174 41 1 -35 50 4 171 45 18 -35 53 25
172 24 56 -36 44 54 15 29 22 26 259 -50 172 37 21 -36 44 46 172 12 35 -36 45 0 173 53 41 -36 43 15 170 59 46 -36 44 56
171 40 30 -37 36 31 15 29 35 26 260 -50 171 52 49 -37 36 29 171 28 15 -37 36 30 173 8 27 -37 35 39 170 15 57 -37 35 49
170 57 48 -38 27 30 15 29 48 27 261 -51 171 10 2 -38 27 34 170 45 38 -38 27 23 172 25 10 -38 27 22 169 33 43 -38 26 9
170 16 43 -39 17 56 15 30 1 28 261 -51 170 28 54 -39 18 6 170 4 36 -39 17 45 171 43 38 -39 18 28 168 52 57 -39 16 0
169 37 7 -40 7 54 15 30 13 28 262 -51 169 49 16 -40 8 9 169 25 2 -40 7 37 171 3 45 -40 9 3 168 13 32 -40 5 24
168 58 54 -40 57 26 15 30 26 29 263 -52 169 11 2 -40 57 45 168 46 50 -40 57 5 170 25 24 -40 59 8 167 35 24 -40 54 25
168 22 0 -41 46 35 15 30 39 29 264 -52 168 34 8 -41 46 59 168 9 56 -41 46 10 169 48 28 -41 48 49 166 58 27 -41 43 5
167 46 21 -42 35 24 15 30 52 30 264 -52 167 58 30 -42 35 52 167 34 15 -42 34 55 169 12 55 -42 38 7 166 22 39 -42 31 26
167 11 52 -43 23 56 15 31 5 30 265 -52 167 24 3 -43 24 27 166 59 45 -43 23 22 168 38 38 -43 27 6 165 47 56 -43 19 32
166 38 31 -44 12 12 15 31 18 31 266 -52 166 50 45 -44 12 47 166 26 21 -44 11 35 168 5 36 -44 15 48 165 14 14 -44 7 24
166 6 16 -45 0 14 15 31 31 31 267 -52 166 18 33 -45 0 53 165 54 2 -44 59 34 167 33 45 -45 4 14 164 41 33 -44 55 3
165 35 4 -45 48 5 15 31 44 31 268 -52 165 47 25 -45 48 47 165 22 45 -45 47 21 167 3 4 -45 52 28 164 9 50 -45 42 32
165 4 53 -46 35 46 15 31 57 32 268 -52 165 17 20 -46 36 31 164 52 29 -46 34 59 166 33 30 -46 40 31 163 39 2 -46 29 52
Uncertainty in time = +/- 8 secs
Prediction of 2014 Jun 22.0
Use these links for further information:
[Planetary Occultations]
[Using the Predictions]
[Observing Details]
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[Reporting Details]
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[Asteroid Occultation Results]
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