ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 23 March 2022                         STAR: UCAC4 437-050127

  ASTEROID: 2000 AL141                           No: 45403

 2 OBSERVER : 
  Name      : Julia Perla, Justyna Olszewska, Jakub Tokarek                         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: NEGATIVE         |
  +----------------------------------------------+
  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  - 20:12:53.39   -    - 0.01
  D  -    -    -  
  R  -    -    -  
  E  - 20:14:28.33   -    - 0.01 
 
  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      : GPS++
  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)                      : 12
  Temperature (deg C / humid.)      : 6 deg C / humidity 60 %
  Star image stability              : good
  Minor planet visible              : no
  Local conditions (degree)         : star height: 35, Sun height: -26, 
  Local moon conditions (degree)    : Moon height: below horizon

 8 ADDITIONAL COMMENTS:
  Star magnitude                          : 12.5 / (11.8 with nearby star)
  Minor planet magnitude                  : 16.6
  Feed                                    : CentralEurope
  Distance (km)                           : 3.3
  Faintest star on CCD (mag)              : 13.2
  Exposure time				  : 0.46 s 
  Readout time				  : 0.01 s

  Predicted max. duration (secs) : 1.37 
  Predicted max. drop (mag)      : 4.2 / (0.8 mag with nearby star)
  Predicted mid-event (UT)       : 20:13:21
  Predicted error in time (secs) :  7.8
  Probability			 : 10.2 %
  
  Data reduction by Julia Perla