ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 14 September 2021                         STAR: UCAC4 471-110652

  ASTEROID: Pretoria                               No: 790

 2 OBSERVER : 
  Name      : Julia Perla                         Abrr: 
  Address   : Astronomical Observatory Institute, A. Mickiewicz University, Sloneczna 36, Poznan, Poland

 3 OBSERVING STATION: 
  Nearest city : Poznan
  Station      : Borowiec          IAU obs code: 187
  Latitude     : 52 16 36.8 N   
  Longitude    : 17 04 30.8 E   
  Altitude     : 123 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:
 "S"tart observation   "I"nterrupt-start   "D"isappearance   "B"link   "F"lash
 "E"nd observation     "J"nterrupt-end     "R"eappearance    "O"ther (specify)

  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
  S  - 22:44:32.80   -    - 0.01
  D  - 22:45:13.09   -    - 0.1
  R  - 22:45:44.20   -    - 0.1
  E  - 22:46:11.23   -    - 0.01 
 
                         Duration :   31.11 +/- 0.14
                         Mid-event :  22:45:28.64 +/- 0.1
  
  Was your reaction time applied to the above timings? - not applicable.
  
 5 TELESCOPE: 
  Type        : Newton  f/4.5                          Aperture   : 400 mm
  Focal length: 1800 mm                                FOV        : 27'x 30'
  Mount       : paralactic                             Motor drive: no

 6 TIMING & RECORDING:
  Time source      : Local ntp server vega.cbk.poznan.pl (NTP++)
  Sensor           : Andor Zyla 5.5 camera with sCMOS sensor
  Mode of recording: Binning 2x2, Image size: Full
  Shutter (SENS-UP): Electronic
  Recording        : Personal Computer
  Recording        : Own software
  Time insertion   : Start exposure times inserted into FITS headers with own software

 7 OBSERVING CONDITIONS: 
  Atmospheric transparency          : good 
  Wind  (km/h)                      : mild
  Temperature (deg C / humid.)      : +14 deg C / humidity 77 %
  Star image stability              : good
  Minor planet visible              : no
  Local conditions (degree)         : star height: 25, Sun height: -35, 
  Local moon conditions (degree)    : Moon height: below horizon

 8 ADDITIONAL COMMENTS:
  Star magnitude                          : 12.8
  Minor planet magnitude                  : 13.1
  Feed                                    : IBEROC
  Distance (km)                           : 9.5 km
  Faintest star on CCD (mag)              : 13.8
  Exposure time				  : 0.5 s 
  Readout time				  : 0.01 s

  Predicted max. duration (secs) : 32.0 
  Predicted max. drop (mag)      :  0.9
  Predicted mid-event (UT)       : 22:45:25
  Predicted error in time (secs) : 12
  Probability			 : 83.5 %
  Data reductions by Anna Marciniak