IOTA/IOTA-ES occultation update for
(56) Melete / TYC 0651-00524-1 on November 2/3, 2004
visible from Siberia, N Khazachstan, S Russia, NW Turkey,
and NW Africa
Summary
In the night of November 2/3, 2004 a faint 10.2 mag star TYC 0651-00524-1 will be occulted by a 117 km asteroid (56) Melete. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~2 path width S shift with time ~0.3 minutes later compared to Edwin Goffin's nominal prediction.
Updated path runs over Siberia around 21:49 UT, N Khazachstan ~21:51 UT, S Russia ~21:52.6 UT, NW Turkey ~21:54.2 UT and NW Africa 21:57-22:00 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 2, 2004 @ 21:55 UT (Europe)
* magnitude of target star: 10.2
* magnitude drop [mag]: 2.1
* estimated maximum duration [s]: 9.2
* approx. V mag of minor planet at event [mag]: 12.1
* geocentric parallax of minor planet ["]: 5.253
* apparent motion of minor planet ["/h]: 37.89
* angular distance to moon, phase of moon [deg,%]: 57, 71%
* Goffin's original chart reference: A04_1108
The occultation path with path maps:
* approximate ground width [km]: 130
* uncertainty [path widths]: 0.6
* uncertainty in time [s]: 9
* 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 SE Aries, about 3.2 degrees NW of 3.6 mag star omicron Tauri = SAO 111172.
!!! 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 0651-00524-1 = PPM 118927
* constellation: Aries
* J2000 position [h,m,s; o,',"]: 03h 14m 01.2854s; +10d 49' 19.294"
* position source: UCAC2
* estimated 1-sigma accuracy ["]: 0.023" (0.016", 0.016")
* V mag [mag]: 10.21
* B-V [mag]: +0.57
* remarks:
Data for the minor planet:
* general information:
number, name: (56) Melete
approx. diameter [km]: 117
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 137 USNO, 18 TMO
number of rejected observations: 0
time covered by the observations: 1998 02 24 - 2004 10 14
rms residuals ["] (RA,DE): 0.13", 0.10"
estimated positional 2-sigma accuracy at epoch of event ["]: 0.09", 0.04"
remarks:
* orbital elements
Semimajor axis = 2.59583927694212 AU
Eccentricity = 0.237797471203817
Inclination = 8.0714536269461 deg
Long. of node = 193.4862234476074 deg
Arg. of pericenter = 103.6996172430235 deg
Mean anomaly = 81.9188334516720 deg
Epoch of elements : MJD 53311.91000000 TDT (Nov 2, 2004, 21.840000 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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