IOTA/IOTA-ES occultation update for
(329) Svea / TYC 4753-01273-1 on November 23/24, 2005
visible from S Portugal, Spain, S France, Switzerland, S Germany,
W Czechia, NW Poland and Baltic states
Summary
In the night of November 23/24, 2007 a faint 10.6 mag star TYC 4753-01273-1 will be occulted by a 78 km asteroid (329) Svea. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows 0.4 path width south shift with time ~7 seconds earlier compared to Preston's update from 2007 Nov 7 @ 06:08 UT.
Updated path runs over Baltic states ~23:37.0 UT, NW Poland ~23:37.7 UT, NW Czechia ~23:38.1 UT, Germany ~23:38.6 UT, NW Switzerland 23:39.0 UT, France 23:39.6 UT, Spain ~23:40.6 UT and Portugal ~23:41.2 UT. Please check the path chart for details.
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Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: November 23/24, 2007 @ 23:39 UT (Europe)
* magnitude of target star: 10.6
* magnitude drop [mag]: 3.0
* estimated maximum duration [s]: 7.1
* approx. V mag of minor planet at event [mag]: 13.5
* geocentric parallax of minor planet ["]: 5.382
* angular distance to moon, phase of moon [deg,%]: 41, 99%
* Goffin's original chart reference: A07_11051
The occultation path with path maps:
* approximate ground width [km]: 120
* uncertainty [path widths]: 0.50
* uncertainty in time [s]: 6
* map: Overview
European part
* remarks: Path uncertainties [1 sigma] are given according to nominal star
position errors and expected asteroid positional accuracy.
Elements for WinOccult - use 'Save as ...' to download and save these elements.
Finding charts (prepared in GUIDE8):
* occulted star is in center - labeled with cross
* labeled stars have indicated SAO numbers
* (smaller) square box shows 30' field in all wider field charts
* (larger) square box shows 3° field in wide field charts
* remarks:
Target star is in middle Orion, about 15' NE of 4.7 mag star 31 Orionis = SAO 132176.
!!! IMPORTANT !!!
Purple stars in identification chart are so called 'non-star' objects in GSC; in dense fields
the 'non-stars' are often real stars or blends of close pairs. Be careful about this.
40-degree chart
3-degree chart
0.5-degree chart
Data for the target star:
* name: TYC 4753-01273-1
* constellation: Orion
* J2000 position [h,m,s; o,',"]: 05h 28m 48.5086s; -01d 00' 35.344"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.021", 0.020"
* V mag [mag]: 10.6
* B mag [mag]: 12.6
* remarks:
Data for the minor planet:
* general information:
number, name: (329) Svea
approx. diameter [km]: 78
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 199
time covered by the observations: 1998 05 22 - 2007 11 16
estimated positional 1-sigma accuracy at epoch of event ["]: 0.043", 0.020", 86 deg
remarks:
* orbital elements
Semimajor axis = 2.47712843568277E+00 AU
Eccentricity = 0.023645280025197
Inclination = 15.8819253955104 deg
Long. of node = 178.5390909821253 deg
Arg. of pericenter = 52.6521819452931 deg
Mean anomaly = 203.8222272020728 deg
Epoch of elements : MJD 54427.98000000 TDT (Nov 23, 2007, 23.520000 h)
Path coordinates: click here
Calculator(s): Jan Manek
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Jan Manek
Werichova 950
152 00 Praha 5 - Barrandov |_|_|
Czech Republic / \
Internet : jan.manek AT worldonline.cz |-O-O-|
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