IOTA/IOTA-ES occultation update for
(348) May / TYC 1359-00941-1 on November 4/5, 2005
visible from Africa, Tunisia, Greece and Turkey
Summary
In the night of November 4/5, 2005 a faint 11.3 mag star TYC 1359-00941-1 will be occulted by a 88 km asteroid (348) May. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~3 path width south shift with time ~0.4 minutes earlier compared to Edwin Goffin's nominal prediction.
Updated path runs over Africa 3:57-4:05 UT, Tunisia ~4:06.0 UT, Greece ~4:10.0 UT and Turkey ~4:12.0 UT. Please check the path chart for details.
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The event at one glimpse:
* date and approx. UT time of event: November 5, 2005 @ 04:10 UT (Europe)
* magnitude of target star: 11.3
* magnitude drop [mag]: 3.2
* estimated maximum duration [s]: 15.7
* approx. V mag of minor planet at event [mag]: 14.4
* geocentric parallax of minor planet ["]: 3.972
* apparent motion of minor planet ["/h]: 12.61
* angular distance to moon, phase of moon [deg,%]: 153, 11%
* Goffin's original chart reference: A05_1148
The occultation path with path maps:
* approximate ground width [km]: 90
* uncertainty [path widths]: 1.0
* uncertainty in time [s]: 26
* 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 middle Gemini, only 19' E of 3.5 mag star delta Geminorum = SAO 79380.
!!! 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 1359-00941-1
* constellation: Gemini
* J2000 position [h,m,s; o,',"]: 07h 21m 30.9231s; +22d 00' 47.348"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.016", 0.016"
* V mag [mag]: 11.29 (averaged ASAS3 V-mag)
* B-V [mag]: +0.54 (Tycho-2)
* remarks:
Data for the minor planet:
* general information:
number, name: (348) May
approx. diameter [km]: 92
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 197 USNO, 2 TMO
number of rejected observations: 0
time covered by the observations: 1998 06 16 - 2005 10 05
estimated positional 2-sigma accuracy at epoch of event ["]: 0.086", 0.040", 88 deg
remarks:
* orbital elements
Semimajor axis = 2.96994204651503
Eccentricity = 0.068514152120216
Inclination = 9.7656513553653 deg
Long. of node = 90.2058818731077 deg
Arg. of pericenter = 7.5251027149012 deg
Mean anomaly = 353.0304208651957 deg
Epoch of elements : MJD 53679.17000000 TDT (Nov 5, 2005, 4.080000 h)
Path coordinates: click here
Calculator(s): Jan Manek
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Jan Manek
Werichova 950
152 00 Praha 5 - Barrandov |_|_|
Czech Republic / \
Internet : jan.manek AT worldonline.cz |-O-O-|
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