IOTA/IOTA-ES occultation update for
(8) Flora / TYC 1304-00296-1 = SAO 94541 on August 9/10, 2004
visible from Morocco, NW Algeria, S Italy, N Albania, S Serbia,
NW Bulgaria, SE Romania, S Moldavia and SE Ukraine
Summary
In the morning of August 9/10, 2004 a bright 8.6 mag star TYC 1304-00296-1 = SAO 94541 will be occulted by a 141 km asteroid (8) Flora. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~0.2 path width south shift with time ~0.1 minute earlier compared to Edwin Goffin's nominal prediction.
Updated path runs over Morocco ~1:57.9 UT, NW Algeria ~1:58.0 UT with Algiers in path, S Italy ~1:58.2 UT with Naples in path, N Albania ~1:58.2 UT, S Serbia ~1:58.3 UT, NW Bulgaria ~1:58.4 UT with Sofia on south limit, SE Romania ~1:58.4 UT with Bucharest almost on central line, S Moldavia ~1:58.5 UT and SE Ukraine 1:58.6 UT with Odessa in path. 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: August 10, 2004 @ 01:58 UT (Europe)
* magnitude of target star: 8.6
* magnitude drop [mag]: 2.2
* estimated maximum duration [s]: 3.9
* approx. V mag of minor planet at event [mag]: 10.6
* geocentric parallax of minor planet ["]: 3.922
* apparent motion of minor planet ["/h]: 81.05
* angular distance to moon, phase of moon [deg,%]: 13, 30%
* Goffin's original chart reference: A04_0801
The occultation path with path maps:
* approximate ground width [km]: 180
* uncertainty [path widths]: 0.34
* uncertainty in time [s]: 3
* 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 southwest Taurus, about 3.4 degrees SWS of 3.0 mag star zeta Tauri = SAO 77336.
!!! 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 1304-00296-1 = SAO 94541 = PPM 120946
* constellation: Taurus
* J2000 position [h,m,s; o,',"]: 05h 26m 03.5451s; +19o 08' 08.039"
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.02")
* V mag [mag]: 8.58
* B-V [mag]: +0.34
* remarks:
Data for the minor planet:
* general information:
number, name: (8) Flora
approx. diameter [km]: 141
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 153 USNO, 40 TMO, 114 HIP+TYC
number of rejected observations: 0
time covered by the observations: 1990 01 25 - 2003 08 24
rms residuals ["] (RA,DE): 0.08", 0.06"
estimated positional accuracy at epoch of event ["]: 0.06", 0.02"
remarks:
Orbital elements:
Semimajor axis = 2.20130907813724 AU
Eccentricity = 0.156403283743432
Inclination = 5.8869439415536 deg
Long. of node = 111.0330060503312 deg
Arg. of pericenter = 284.9548887110220 deg
Mean anomaly = 13.8528394719165 deg
Epoch of elements : MJD 53227.08000000 TDT (Aug 10, 2004, 1.920000 h)
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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