IOTA/IOTA-ES occultation update for
(712) Boliviana / TYC 1783-00783-1 on July 28/29, 2005
visible from NW Morocco, SE Spain, Mallorca, Corse,
middle Italy, Croatia, Slovenia, Hungary, Slovakia,
SE Poland, NW Ukraine, SE Belarus, E Russia
Summary
In the night of July 28/29, 2005 a faint 11.9 mag star TYC 1783-00783-1 will be occulted by a 132 km asteroid (712) Boliviana. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows no path shift with time 0.2 minutes later compared to Edwin Goffin's nominal prediction.
Updated path runs over NW Morocco ~1:04.5 UT, SE Spain ~1:04.6 UT, Mallorca ~1:04.7 UT, Corse ~1:05.0 UT, middle Italy ~1:05.1 UT, Croatia ~1:05.2 UT, Slovenia ~1:05.3 UT, Hungary ~1:05.4 UT, Slovakia ~1:05.5 UT, SE Poland ~1:05.6 UT, NW Ukraine ~1:05.7 UT, SE Belarus ~1:08.8 UT and E Russia ~1:06.2 UT. Please check the path chart for details.
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The event at one glimpse:
* date and approx. UT time of event: July 29, 2005 @ 01:05 UT (Europe)
* magnitude of target star: 11.9
* magnitude drop [mag]: 1.6
* estimated maximum duration [s]: 4.8
* approx. V mag of minor planet at event [mag]: 13.2
* geocentric parallax of minor planet ["]: 4.054
* apparent motion of minor planet ["/h]: 63.34
* angular distance to moon, phase of moon [deg,%]: 6, 41%
* Goffin's original chart reference: A05_0754
The occultation path with path maps:
* approximate ground width [km]: 180
* uncertainty [path widths]: 0.8
* uncertainty in time [s]: 6
* 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 W Aries, about 8 degrees E of open cluster M45.
!!! 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 1783-00783-1
* constellation: Aries
* J2000 position [h,m,s; o,',"]: 03h 10m 56.9083s; +23d 43' 35.338"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.029" (0.017", 0.023")
* V mag [mag]: 11.94
* B-V [mag]: +0.86
* remarks:
Data for the minor planet:
* general information:
number, name: (712) Boliviana
approx. diameter [km]: 132
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 156 USNO, 19 TMO
number of rejected observations: 0
time covered by the observations: 1998 02 02 - 2004 10 24
estimated positional 2-sigma accuracy at epoch of event ["]: 0.094", 0.060", 91 deg
remarks:
* orbital elements
Semimajor axis = 2.57445539207612
Eccentricity = 0.188274463378944
Inclination = 12.7811411388059 deg
Long. of node = 231.0491954593691 deg
Arg. of pericenter = 181.2113729773224 deg
Mean anomaly = 340.6217456047773 deg
Epoch of elements : MJD 53580.04000000 TDT (Jul 29, 2005, 0.960000 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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