ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 5 December 2019                   STAR: TYC 1280-832-1  (9.0 mag)
  ASTEROID: Cremona                       No: 486

2 OBSERVER: Name: Marek Zawilski            Abbr:
            Address: 91-473 Lodz, Poland

3 OBSERVING STATION: Nearest cities: Tomaszow Mazowiecki
  Station: Tomaszow Mazowiecki
  Latitude:  51d 31' 35.2" N
  Longitude: 20d 01' 43.2" E
  Altitude:  160m MSL
  Datum (WGS84 preferred): WGS84

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

                         +----------------------------------+
4 TIMING OF EVENTS:      |                                  |
                         |  OCCULTATION RECORDED: NEGAITIVE |
                         |                                  |
                         +----------------------------------+
  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  - 21:39:09    - N/A  - 1    :
    D  -      -                    :  
    R  -   -                       :   
    E  - 21:41:10    - N/A  - 1    :
  
                          Duration : no occultation for sure
                         Mid-event : 
               Predicted mid-event : 5 Dec; 21:40:48 UT  +/- 2 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: NTP via Dimension4 using the time server "tempus1.gum.gov.pl",Warsaw, laptop-time synchronized to 0.01s 
  Sensor: ZWO ASI 120MM, shutter set for 95 ms, image resolution 640x480 px, gain 100 (star faint due to thin fog).
  Recording: SHARPCAP 3.1.5220.0

7 OBSERVING CONDITIONS:
  Atmospheric transparency: good   Wind: none            Temperature: -2 deg C
  Star image stability: good       Minor planet visible: no 

8 ADDITIONAL COMMENTS:
 
  The light curve analyze using Tangra software and a careful inspection of the screen replay showed no remarkable drop of star brightness. The star image was stable. 

  Predicted max 1.6 sec duration with 5.6 mag drop.
  Event probability at site : 41.5%
  Distance from center line : 3.2 in N direction
  Local * conditions (Alt,Az): 52°, @155°