ASTEROIDAL OCCULTATION - REPORT FORM

    +------------------------------+  +------------------------------+
    |            EAON              |  |            IOTA/ES           |
    |                              |  |   INTERNATIONAL OCCULTATION  |
    |     EUROPEAN  ASTEROIDAL     |  |      TIMING  ASSOCIATION     |
    |     OCCULTATION NETWORK      |  |       EUROPEAN SECTION       |
    +------------------------------+  +------------------------------+

1 DATE: 04 July 2022             STAR: TYC 5168-00191-1  (10.2 mag)
  ASTEROID: Wichmann                No: 7103 

2 OBSERVER: Name: Marek Zawilski            Abbr:
            E-mail: marek.zawilski@p.lodz.pl
            Address: ul.Julianowska 5/7 m.322, 91-473 Lodz, Poland
            Assistance: Mieczyslaw Borkowski

3 OBSERVING STATION: Nearest cities: Lodz and Lask
  Station: Wodzierady
  Latitude:  51d 40' 12.1" N
  Longitude: 19d 07' 52.0" E
  Altitude:  168 m MSL
  Datum (WGS84 preferred): WGS84

  Single, OR Double or Multiple station (Specify observer's name):
  SINGLE

                         +----------------------------------+
4 TIMING OF EVENTS:      |                                  |
                         |  OCCULTATION RECORDED: NEGATIVE  |
                         |                                  |
                         +----------------------------------+
  Type of event
  Start observation   Interrupt-start   Disappearance   Blink   Flash
  End observation     Jnterrupt-end     Reappearance    Other (specify)

                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH:MM:SS.ss   S.ss   S.ss
  
    S  - 00:01:46      - N/A  1.0   
    D  -     
    R  -          
    E  - 00:03:01      - N/A  1.0    
 
                          Duration : none
                         Mid-event : none
               Predicted mid-event : 04 Jul;00:02:16 UT  +/- 5 sec

  Was your reaction time applied to the above timings? N/A

5 TELESCOPE: Type: Cassegrain       Aperture: 203mm    Magnification: ---
             Mount: Equatorial      Motor drive: YES   Foc.length: 2032mm reduced to 1016mm

6 TIMING & RECORDING:
  Time source: Laptop time controlled by the GPS Shelyak TimeBox device (time error +0.000 s with 7 satellites).
  Sensor: ZWO ASI 120MM, shutter set for 100 ms, video time resolution 116 ms, image resolution 1024x768 px, gain 80, brightness 15.
  Recording: SHARPCAP v.4.0.8949.0 software.

7 OBSERVING CONDITIONS:
  Atmospheric transparency: very good        Wind: none            Temperature: +14 deg C
  Star image stability: good                 Minor planet visible: no 

8 ADDITIONAL COMMENTS:
 
  The light curve analyze using Tangra software showed no drop of the star brightness caused by the asteroid. The star image was stable for the occulted and comparison star, a small decrease of brightness was caused by a humidity on the objective glass. 
  No light drop longer than 0.12 s recorded.
  The observation was made inside the predicted path close to the ptredicted central line.
 

  Predicted max. 1.0 sec. duration with 6.8 mag. drop.
  Event probability at site : 12.7%
  Distance from center line : 2.3 km in 322° direction, inside the predicted path.
  Local * conditions (Alt,Az): 33°, @179° in Aquila.
  Moon (Alt, Az): below the horizon.