IOTA/IOTA-ES occultation update for
(5027) Androgeos / GSC 5029-00616 on June 12/13, 2004
visible from S Russia, NW Turkey, Greece, Tunisia and NW Africa
Summary
In the night of June 12/13, 2004 a faint 11.9 mag star GSC 5029-00616 will be occulted by a 97 km asteroid (5027) Androgeos. This update is based on LaSilla astrometry for the asteroid and UCAC2 star position.
The updated path shows ~0.25" south shift compared to Eric Frappa's nominal prediction.
Updated path runs over S Russia ~22:50.7 UT, NW Turkey ~22:51.3 UT, Greece ~22:51.8 UT, Tunisia ~22:52.7 UT and NW Africa ~22:54 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 12, 2004 @ 22:52 UT (Europe)
* magnitude of target star: 11.9
* magnitude drop [mag]: 5.1
* estimated maximum duration [s]: 2.5
* approx. V mag of minor planet at event [mag]: 17.0
* geocentric parallax of minor planet ["]: 1.856
* apparent motion of minor planet ["/h]: 18.56
* angular distance to moon, phase of moon [deg,%]: 152, 20%
* Goffin's original chart reference: A04_XXXX
The occultation path with path maps:
* approximate ground width [km]: 55
* uncertainty [path widths]: 12.0
* uncertainty in time [s]: 28
* 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 NE Libra, about 3.3 degrees southwest of 3.5 mag star mu Serpentis = SAO 140787.
!!! 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: GSC 5029-00616
* constellation: Libra
* J2000 position [h,m,s; o,',"]: 15h 42m 01.892 s; -06o 04' 49.45 "
* position source: UCAC2
* estimated accuracy ["]: 0.04" (0.02", 0.03")
* V mag [mag]: 11.88
* B-V [mag]: +?.??
* remarks:
Data for the minor planet:
* general information:
number, name: (5027) Androgeos
approx. diameter [km]: 44
* orbital information
orbit source: calculation Manek
source of used astrometry: LaSilla (Raoul Behrend), Ondrejov (Wolf, Manek)
number of used observations: 3 LaSilla, 2 Ondrejov
number of rejected observations: 0
time covered by the observations: 2004 06 02 - 2004 06 09
rms residuals ["] (RA,DE): 0.40", 0.40"
estimated positional accuracy at epoch of event ["]: 0.14", 0.13"
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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