ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 03 August 2019                   STAR: UCAC4 365-082756  (12.9 mag)
  ASTEROID: Palatia                No: 415

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

3 OBSERVING STATION: Nearest city: Lodz
  Station: Tobolice
  Latitude:  51d 54' 48.3" N
  Longitude: 19d 03' 22.4" E
  Altitude:  140m MSL
  Datum (WGS84 preferred): WGS84

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

                         +----------------------------------+
4 TIMING OF EVENTS:      |                                  |
                         |  OCCULTATION RECORDED: POSITIVE  |
                         |                                  |
                         +----------------------------------+
  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  - 20:41:00    - N/A  - 1    :
    D  - 20:43:50.8  -       - 0.8 : (D of 0.8s earlier not excluded - a gradual event, see lightcurve)
    R  - 20:44:01.8  -       - 0.8 :
    E  - 20:45:00    - N/A  - 1    :
  
                          Duration : 11 s
                         Mid-event : 20:43:56 
               Predicted mid-event : 3 Aug; 20:43:54 UT  +/- 13 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: Dimension4 using the time server of Astrogeodynamical Observatory Borowiec, PL, laptop-time synchronized better than 0.01s
  Sensor: ZWO ASI 120MM camera
  Recording: SharpCap v.3.1.5220 software

7 OBSERVING CONDITIONS:
  Atmospheric transparency: very good   Wind: none              Temperature: 13 deg C
  Star image stability: good       Minor planet visible: perhaps (after the disappearence of the target star; not sure)

8 ADDITIONAL COMMENTS:
  Integration time 500 ms, gamma=1.00
  The light curve analyze using Tangra software with gamma of 3.0 (weak star and some noise of its image; a guiding star, however, of a good stability), final timestamp resolution 0.806s
  The dis- and reappearance clearly noticed on screen during the recording analyze.
  Predicted max 14 sec duration with 2.2 mag drop.
  Event probability at site : 42%
  Distance from center line : 4 km
  Local * conditions (Alt,Az): 18°, @203°