IOTA/IOTA-ES occultation update for
(67) Asia / UCAC2 36051757 = GSC 0643-00142 on November 1/2, 2005
visible from N Russia, Latvia, Lithuania, Poland, W Czechia, Germany,
NW Switzerland, France, Spain and Portugal
Summary
In the night of November 1/2, 2005 a faint 11.4 mag star UCAC2 36051757 = GSC 0643-00142 will be occulted by a 60 km asteroid (67) Asia. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~1 path width north shift with time ~0.5 minutes later compared to Edwin Goffin's nominal prediction.
Updated path runs over N Russia ~21:58-22:00 UT, Latvia ~22:00.4 UT, Lithuania ~22:00.6 UT, Poland ~22:01.2 UT, W Czechia ~22:02.0 UT, Germany ~22:02.1 UT, NW Switzerland ~22:02.8 UT, France ~22:03.1 UT, Spain ~22:04.2 UT and Portugal ~22:05.0 UT. Please check the path chart for details.
Target star is not catalogued as component of double star, however it's only 62" N of 5.2 mag star SAO 93083 = UV Ari.
Moreover, target is probably slightly fainter giving only ~0.6 mag drop. Video recomennded.
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Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: November 01, 2005 @ 22:02 UT (Europe)
* magnitude of target star: 11.4
* magnitude drop [mag]: 0.6
* estimated maximum duration [s]: 5.4
* approx. V mag of minor planet at event [mag]: 11.1
* geocentric parallax of minor planet ["]: 6.433
* apparent motion of minor planet ["/h]: 40.04
* angular distance to moon, phase of moon [deg,%]: 173, 0%
* Goffin's original chart reference: A05_1121
The occultation path with path maps:
* approximate ground width [km]: 80
* uncertainty [path widths]: 1.5
* uncertainty in time [s]: 10
* map: Overview
European part
* remarks: Path uncertainties [2 sigmas] 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 S Aries, about 2.3 degrees N of 4.3 mag star mu Ceti = SAO 110723.
!!! 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: UCAC2 36051757 = GSC 0643-00142
* constellation: Aries
* J2000 position [h,m,s; o,',"]: 02h 44m 58.6780s; +12d 27' 44.029"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.019", 0.053"
* V mag [mag]: 11.40 (averaged ASAS3 V-mag)
* B-V [mag]: +?.??
* remarks:
Data for the minor planet:
* general information:
number, name: (67) Asia
approx. diameter [km]: 60
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 175 USNO, 17 TMO
number of rejected observations: 0
time covered by the observations: 1997 06 17 - 2005 10 15
estimated positional 2-sigma accuracy at epoch of event ["]: 0.066", 0.038", 78 deg
remarks:
* orbital elements
Semimajor axis = 2.42171147041419
Eccentricity = 0.184671479270546
Inclination = 6.0270562418052 deg
Long. of node = 202.7272971989549 deg
Arg. of pericenter = 106.3272415853576 deg
Mean anomaly = 71.2312833716321 deg
Epoch of elements : MJD 53675.92000000 TDT (Nov 1, 2005, 22.080000 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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