IOTA/IOTA-ES occultation update for
(2019) van Albada / TYC 1338-00883-1 on February 25/26, 2004
visible from Turkey, Bulgaria, SW Romania, N Serbia, SW Hungary, NE Slovenia,
Austria, S Germany, Luxembourg, Belgium, very N France, England and Ireland
Summary
In the night of February 25/26, 2004 a faint 11.5 mag star TYC 1338-00883-1 will be occulted by a tiny 17 km asteroid (2019) van Albada. This update is based on ASTDYS database only for the asteroid and UCAC2 star position. In fact it is no real update as no high accurate astrometry was available.
The updated path shows ~1 path width north shift with time ~1 minutes earlier compared to Eric Frappa's s nominal prediction.
Updated path runs over Turkey around 19:58 UT, Bulgaria ~20:05 UT, SW Romania ~20:07 UT, N Serbia ~20:09 UT, SW Hungary ~20:11 UT, NE Slovenia ~20:12 UT, Austria around 20:13.5 UT, S Germany around 20:17 UT, Luxembourg ~20:19 UT, Belgium ~20:20 UT, very N France ~20:21 UT, England around 20:23.5 UT and Ireland ~20:27 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: February 25, 2004 @ 20:13 UT (Europe)
* magnitude of target star: 10.1
* magnitude drop [mag]: 6.5
* estimated maximum duration [s]: 9.6
* approx. V mag of minor planet at event [mag]: 16.6
* geocentric parallax of minor planet ["]: 4.685
* apparent motion of minor planet ["/h]: 4.73
* angular distance to moon, phase of moon [deg,%]: 60, 29%
* Goffin's original chart reference: A04_XXXX
The occultation path with path maps:
* approximate ground width [km]: 20
* uncertainty [path widths]: 11.5
* uncertainty in time [s]: 145 (=2 minutes 25 seconds !!!)
* 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 Gemini, about 3.4 degrees NE of 2.0 mag star gamma Geminorum = SAO 95912.
!!! 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.
20-degree chart
3-degree chart
0.5-degree chart
Data for the target star:
* name: TYC 1338-00883-1
* constellation: Gemini
* J2000 position [h,m,s; o,',"]: 06h 47m 25.2869s; +18o 53' 50.971"
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.02")
* V mag [mag]: 10.11
* B-V [mag]: +0.78
* remarks:
Data for the minor planet:
* general information:
number, name: (2019) van Albada
approx. diameter [km]: 17
* orbital information
orbit source: calculation Manek
source of used astrometry: ASTDYS database
number of used observations: 510
number of rejected observations: 0
time covered by the observations: 1971 04 20 - 2004 01 30
rms residuals ["] (RA,DE): 0.91", 0.88"
estimated positional accuracy at epoch of event ["]: 0.18", 0.12"
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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