IOTA/IOTA-ES occultation update for
(318) Magdalena / UCAC2 28423945 = GSC 5697-00142 on June 10/11, 2005
visible from S Romania, fr. Yugoslavia, N Italy, S France and N Spain
Summary
In the night of June 10/11, 2005 a faint 11.6 mag star UCAC2 28423945 = GSC 5697-00142 will be occulted by a 44 km asteroid (318) Magdalena. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~3 path width N shift with time 1.2 minutes earlier compared to Edwin Goffin's nominal prediction.
Updated path runs over S Romania ~1:34 UT, frm. Yugoslavia ~1:34.7 UT, N Italy ~1:35.5 UT, S France around 1:36.5 UT and N Spain ~1:37.4 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: June 11, 2005 @ 01:36 UT (Europe)
* magnitude of target star: 11.6
* magnitude drop [mag]: 3.2
* estimated maximum duration [s]: 3.7
* approx. V mag of minor planet at event [mag]: 14.7
* geocentric parallax of minor planet ["]: 3.492
* apparent motion of minor planet ["/h]: 23.49
* angular distance to moon, phase of moon [deg,%]: 150, 15%
* Goffin's original chart reference: A05_0634
The occultation path with path maps:
* approximate ground width [km]: 80
* uncertainty [path widths]: 2.8
* uncertainty in time [s]: 18
* 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 middle Scutum, about 4.8 degrees SSE of 4.2 mag star beta Scuti = SAO 142618.
!!! 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 28423945 = GSC 5697-00142
* constellation: Scutum
* J2000 position [h,m,s; o,',"]: 18h 50m 19.2555s; -09d 30' 06.344"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.029" (0.021", 0.020")
* R mag [mag]: 11.64
* B-V [mag]: +?.??
* remarks:
Data for the minor planet:
* general information:
number, name: (318) Magdalena
approx. diameter [km]: 44
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 146 USNO, 2 TMO
number of rejected observations: 0
time covered by the observations: 1998 02 12 - 2005 06 04
estimated positional 2-sigma accuracy at epoch of event ["]: 0.110", 0.054", 91 deg
remarks:
* orbital elements
Semimajor axis = 3.19388207472697
Eccentricity = 0.083598342356902
Inclination = 10.6409123432178 deg
Long. of node = 161.6705752122613 deg
Arg. of pericenter = 300.2611524433918 deg
Mean anomaly = 172.8013502551586 deg
Epoch of elements : MJD 53532.07000000 TDT (Jun 11, 2005, 1.680000 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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