IOTA/IOTA-ES occultation update for
(37) Fides / TYC 6783-00143-1 on May 28/29, 2004
visible from Asia, Middle East, S Turkey, Greece, S Albania,
Italy, Switzerland, N France and England
Summary
In the night of May 28/29, 2004 a faint 11.8 mag star TYC 6783-00143-1 will be occulted by a 108 km asteroid (37) Fides. This update is based on USNO/Flagstaff, TMO a OAC astrometry for the asteroid and UCAC2 star position.
The updated path shows ~1 path width south shift with time ~0.4 minutes earlier compared to Edwin Goffin's nominal prediction.
Updated path runs over Asia, Middle East, S Turkey ~21:10.6 UT, Greece ~21:11.5 UT, S Albania ~21:11.6 UT, Italy ~21:12.2 UT, Switzerland ~21:12.5 UT, N France ~21:12.7 UT and England ~21:12.9 UT at low altitudes. 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: May 28, 2004 @ 21:12 UT (Europe)
* magnitude of target star: 11.8
* magnitude drop [mag]: 0.7
* estimated maximum duration [s]: 7.7
* approx. V mag of minor planet at event [mag]: 11.7
* geocentric parallax of minor planet ["]: 4.200
* apparent motion of minor planet ["/h]: 33.06
* angular distance to moon, phase of moon [deg,%]: 67, 66%
* Goffin's original chart reference: A04_0507
The occultation path with path maps:
* approximate ground width [km]: 200
* uncertainty [path widths]: 0.75
* uncertainty in time [s]: 7
* 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 north Scorpion, about midway between delta Scorpii = SAO 184014 (2.3 mag)
and pi Scorpii = SAO 183987 (2.8 mag).
!!! 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 6783-00143-1
* constellation: Scorpius
* J2000 position [h,m,s; o,',"]: 15h 59m 50.5345s; -24o 28' 34.564"
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.03")
* V mag [mag]: 11.83
* B-V [mag]: +0.56
* remarks:
Data for the minor planet:
* general information:
number, name: (37) Fides
approx. diameter [km]: 108
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen), OAC (Angel Lopez et. al.)
number of used observations: 165 USNO, 7 TMO, 5 OAC
number of rejected observations: 0
time covered by the observations: 1998 12 13 - 2004 05 19
rms residuals ["] (RA,DE): 0.10", 0.10"
estimated positional accuracy at epoch of event ["]: 0.06", 0.05"
remarks:
Path coordinates: click here
Calculator(s): Jan Manek
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Jan Manek
Stefanik Observatory Private :
Petrin 205 Werichova 950
118 46 Praha 1 152 00 Praha 5 - Barrandov |_|_|
Czech Republic Czech Republic / \
Internet : jan.manek AT worldonline.cz |-O-O-|
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