IOTA/IOTA-ES occultation update for
(40) Harmonia / TYC 6355-01269-1 on November 12, 2005
visible from S Portugal, Spain, S France, Switzerland, S Germany,
W Czechia, NW Poland and Baltic states
Summary
In the evening of November 12, 2007 a faint 10.8 mag star TYC 6355-01269-1 will be occulted by a 108 km asteroid (40) Harmonia. This update is based on USNO/Flagstaff, TMO and Hipparcos astrometry for the asteroid and UCAC2 star position.
The updated path shows 1/5 path width south shift with time ~3 seconds earlier compared to Preston's update from 2007 Nov 7 @ 05:02 UT.
Updated path runs over S Portugal ~19:04.5 UT, Spain ~19:04.9 UT, S France ~19:05.3 UT, Switzerland ~19:05.5 UT, S Germany ~19:05.6 UT, W Czechia ~19:05.7 UT, NW Poland ~19:05.8 UT and Baltic states at low altitude ~19:05.8 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 12, 2007 @ 19:05 UT (Europe)
* magnitude of target star: 10.8
* magnitude drop [mag]: 1.1
* estimated maximum duration [s]: 5.1
* approx. V mag of minor planet at event [mag]: 11.4
* geocentric parallax of minor planet ["]: 4.353
* angular distance to moon, phase of moon [deg,%]: 53, 7%
* Goffin's original chart reference: A07_11012
The occultation path with path maps:
* approximate ground width [km]: 150
* uncertainty [path widths]: 0.23
* uncertainty in time [s]: 4
* 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 Capricornus, about 24' NE of 5.2 mag star phi Capricorni = SAO 190173.
!!! 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 6355-01269-1
* constellation: Capricornus
* J2000 position [h,m,s; o,',"]: 21h 14m 10.9778s; -20d 26' 33.411"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.022", 0.021"
* V mag [mag]: 10.8
* B mag [mag]: 12.1
* remarks:
Data for the minor planet:
* general information:
number, name: (40) Harmonia
approx. diameter [km]: 108
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen),
Hipparcos
number of used observations: 339
time covered by the observations: 1990 03 18 - 2007 11 01
estimated positional 1-sigma accuracy at epoch of event ["]: 0.016", 0.010", 77 deg
remarks:
* orbital elements
Semimajor axis = 2.26696388583962E+00 AU
Eccentricity = 0.046177597544036
Inclination = 4.2566777130368 deg
Long. of node = 94.2863069743054 deg
Arg. of pericenter = 269.5263966789062 deg
Mean anomaly = 340.0207639449819 deg
Epoch of elements : MJD 54416.79000000 TDT (Nov 12, 2007, 18.960000 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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