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                ASTERIODAL OCCULTATION - REPORT FORM

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                      EAON & IOTA-ES

              EUROPEAN ASTEROIDAL OCCULTATION NETWORK

   INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

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1 DATE : 06-Jan-2010 
 STAR : 2UCAC 43608980
 ASTEROID : (2617) Jiangxi

2.OBSERVER:
Name: Stefano SPOSETTI
Address: CH-6525 Gnosca, Switzerland
E-mail: stefanosposetti@ticino.com

3.OBSERVING STATION:
Nearest city: CH-6500 Bellinzona
Station: Gnosca Observatory
Latitude: 46deg 13min 54sec (N)
Longitude: 9deg 1min 30sec (E)
Altitude: 260 m
Single/Multiple: single

5.TELESCOPE:
Type: Newtonian
Aperture: 40cm f/4
Magnification: -
Mount: equatorial
Motor drive: yes

6.TIMING & RECORDING:
        Occultation recorded:   NEGATIVE
        Personal Equation Substracted: No because of electronic timing
        Event Time in UT
        Code:        HH:MM:SS.ss  S.ss
        Code:        HH:MM:SS.ss  S.ss
        S            19:38:10
        D
        R
        E            19:40:15
Duration of the occultation: -

Timekeeping: via Computer ("Dimension4" software)
Mode of recording: CCD drift-scan ("Winscan 207" software)
Device of recording:  CCD (SBIG ST8XME)

7.OBSERVING CONDITIONS:
Atmospheric transparency: clouds
Wind: none at the observatory
Star image stability: good
Driftscan speed at 0.05s/pixel
Sampling: 1.2arcsec/pixel
FWHM of stars: 5arcsec

8. NOTES:

The star and the asteroid were easily visible in 5s-integration time CCD images.
The sum star+asteroid was also easily visible in the 0.05s/line scan.
The predicted occultation time for my location was about 19:40:10 UT
The target star was visible thru cloudholes till 19:40:15 UT. Then clouds
covered the starfield. Until this instant no occultation occured.

My location was at the northern limit of the 1sigma path.