IOTA/IOTA-ES occultation update for
(654) Zelinda / TYC 1731-01320-1 on June 26/27, 2004
not visible from any land
Summary
In the night of June 26/27, 2004 a faint 11.7 mag star TYC 1731-01320-1 will be occulted by a 97 km asteroid (654) Zelinda. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~2 path width west shift with no time shift compared to Edwin Goffin's nominal prediction.
Updated path runs totally over Atlantic Ocean. Please check the path chart for details.
Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: June 27, 2004 @ 02:23 UT (Europe)
* magnitude of target star: 11.1
* magnitude drop [mag]: 2.8
* estimated maximum duration [s]: 5.6
* approx. V mag of minor planet at event [mag]: 13.8
* geocentric parallax of minor planet ["]: 3.360
* apparent motion of minor planet ["/h]: 44.59
* angular distance to moon, phase of moon [deg,%]: 160, 64%
* Goffin's original chart reference: A04_0636
The occultation path with path maps:
* approximate ground width [km]: 286
* uncertainty [path widths]: 0.9
* uncertainty in time [s]: 5
* 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 south Andromeda, about 8.3 degrees southeast of 2.1 mag star alpha Andromedae = SAO 73765.
!!! 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 1731-01320-1
* constellation: Andromeda
* J2000 position [h,m,s; o,',"]: 00h 31m 44.1518s; +22o 38' 29.321"
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.02")
* V mag [mag]: 11.07
* B-V [mag]: +0.81
* remarks:
Data for the minor planet:
* general information:
number, name: (654) Zelinda
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: 124 USNO, 16 TMO
number of rejected observations: 0
time covered by the observations: 1999 01 17 - 2003 09 21
rms residuals ["] (RA,DE): 0.10", 0.10"
estimated positional accuracy at epoch of event ["]: 0.04", 0.03"
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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