IOTA/IOTA-ES occultation update for
(179) Klytaemnestra / TYC 6316-00535-1 = PPM 721085 on April 4/5, 2004
visible from France, N Italy, Switzerland, Slovenia, S Austria,
N Serbia and Hungary
Summary
In the night of April 4/5, 2004 a faint 10.5 mag star TYC 6316-00535-1 = PPM 721085 will be occulted by a 81 km asteroid (179) Klytaemnestra. This update is based on USNO/Flagstaff astrometry for the asteroid and UCAC2 star position.
The updated path shows ~1.5 path width north shift with time ~0.2 minutes earlier compared to Edwin Goffin's nominal prediction.
Updated path runs over France ~3:13.5 UT, N Italy ~3:13.8 UT, Switzerland ~3:13.7 UT, Slovenia ~3:14.0, S Austria ~3:14.1 UT, N Serbia ~3:14.1 UT and Hungary ~3:14.3 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: April 5, 2004 @ 03:14 UT (Europe)
* magnitude of target star: 10.5
* magnitude drop [mag]: 3.3
* estimated maximum duration [s]: 3.5
* approx. V mag of minor planet at event [mag]: 13.7
* geocentric parallax of minor planet ["]: 3.051
* apparent motion of minor planet ["/h]: 39.58
* angular distance to moon, phase of moon [deg,%]: 104, 100%
* Goffin's original chart reference: A04_0416
The occultation path with path maps:
* approximate ground width [km]: 250
* uncertainty [path widths]: 1.0
* uncertainty in time [s]: 10
* 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 northeast Sagittarius, about 6.0 degrees east of 3.9 mag star rho1 Sagittarii = SAO 162512.
!!! 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 6316-00535-1 = PPM 721085
* constellation: Sagittarius
* J2000 position [h,m,s; o,',"]: 19h 46m 53.6036s; -18o 01' 00.631"
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.02")
* V mag [mag]: 10.51
* B-V [mag]: +0.67
* remarks:
Data for the minor planet:
* general information:
number, name: (179) Klytaemnestra
approx. diameter [km]: 81
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone)
number of used observations: 119 USNO
number of rejected observations: 0
time covered by the observations: 1998 02 12 - 2003 05 25
rms residuals ["] (RA,DE): 0.11", 0.11"
estimated positional accuracy at epoch of event ["]: 0.10", 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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