IOTA/IOTA-ES occultation update for
(356) Liguria / TYC 4951-00072-1 on December 4/5, 2007
visible from S England, Belgium, Germany, S Bohemia, E Austria,
Slovakia, Hungary, Romania and NE Turkey
Summary
In the night of December 4/5, 2007 a faint 12.6 mag star TYC 4951-00072-1 will be occulted by a 131 km asteroid (356) Liguria. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
Updated path runs over S England, Belgium, Germany, S Bohemia, E Austria, Slovakia, Hungary, Romania and NE Turkey. 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: December 4/5, 2007 @ 03:02:30 UT (Europe)
* magnitude of target star: 12.6
* magnitude drop [mag]: 1.4
* estimated maximum duration [s]: 4.6
* approx. V mag of minor planet at event [mag]: 13.7
* geocentric parallax of minor planet ["]: 2.979
* angular distance to moon, phase of moon [deg,%]: 14, 18%
* Goffin's original chart reference: A07_12056
The occultation path with path maps:
* approximate ground width [km]: 150
* uncertainty [path widths]: 0.44
* uncertainty in time [s]: 3
* 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 4951-00072-1
* constellation: Virgo
* J2000 position [h,m,s; o,',"]: 12h 33m 56.8339s; -02d 54' 56.286"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.020", 0.024"
* V mag [mag]: 12.6 (ASAS/NSVS)
* B mag [mag]: 13.1
* remarks:
Data for the minor planet:
* general information:
number, name: (356) Liguria
approx. diameter [km]: 131
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 176
time covered by the observations: 1997 11 09 - 2007 11 17
estimated positional 1-sigma accuracy at epoch of event ["]: 0.021", 0.012", 122 deg
remarks:
* orbital elements
Semimajor axis = 2.75538008668849
Eccentricity = 0.239700626974663
Inclination = 8.2309092142791 deg
Long. of node = 354.8546546999339 deg
Arg. of pericenter = 78.7613568824093 deg
Mean anomaly = 68.3606024935595 deg
Epoch of elements : MJD 54439.13000000 TDT (Dec 5, 2007, 3.120000 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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