IOTA/IOTA-ES occultation update for
(559) Nanon / GSC 6286-01336 on June 13/14, 2004
visible from England
Summary
In the night of June 13/14, 2004 a faint 11.7 mag star GSC 6286-01336 will be occulted by a 80 km asteroid (559) Nanon. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~2 path width north shift compared to Eric Frappa's nominal prediction.
Updated path runs over England ~01:20.8 UT which is practically only country where the occultation can be observed under dark sky. 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: June 14, 2004 @ 01:21 UT (Europe)
* magnitude of target star: 11.7
* magnitude drop [mag]: 1.7
* estimated maximum duration [s]: 8.9
* approx. V mag of minor planet at event [mag]: 13.2
* geocentric parallax of minor planet ["]: 5.517
* apparent motion of minor planet ["/h]: 28.31
* angular distance to moon, phase of moon [deg,%]: 117, 12%
* Goffin's original chart reference: A04_XXXX
The occultation path with path maps:
* approximate ground width [km]: 180
* uncertainty [path widths]: 2.0
* uncertainty in time [s]: 13
* 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 N Sagittarius, about 3.0 degrees northwest of 2.9 mag star pi Sagittarii = SAO 187756.
!!! 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: GSC 6286-01336
* constellation: Sagittarius
* J2000 position [h,m,s; o,',"]: 19h 02m 28.097 s; -18o 31' 55.92 "
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.02")
* V mag [mag]: 11.7
* B-V [mag]: +?.??
* remarks:
Data for the minor planet:
* general information:
number, name: (559) Nanon
approx. diameter [km]: 80
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 112 USNO, 6 TMO
number of rejected observations: 0
time covered by the observations: 1998 01 29 - 2004 05 30
rms residuals ["] (RA,DE): 0.10", 0.10"
estimated positional accuracy at epoch of event ["]: 0.10", 0.06"
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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