ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 23 April 2022                             STAR: UCAC4 364-131156

  ASTEROID: Althaea                                  No: 119

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

 3 OBSERVING STATION: 
  Nearest city : Poznan
  Station      : Chalin          IAU obs code: -
  Latitude     : 52 36 14.0 N   
  Longitude    : 16 02 33.4 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  - 00:16:03.22   -    -  0.01
  D  - 00:16:55.74   -    -  1.00
  R  - 00:17:03.81   -    -  1.00
  E  - 00:19:23.20   -    -  0.01 
 
                         Duration :    8.07 +/- 1.41
                         Mid-event :  00:16:59.78 +/- 1.00
  
  Was your reaction time applied to the above timings? - not applicable.
  
 5 TELESCOPE: 
  Type        : Cassegrain f/5.3                       Aperture   : 350 mm
  Focal length: 1855 mm                                FOV        : 19'x 21'
  Mount       : altazimuth                             Motor drive: yes

 6 TIMING & RECORDING:
  Time source      : GPS++
  Sensor           : Andor Zyla 5.5 camera with sCMOS sensor
  Mode of recording: Binning 4x4, Image size: Full
  Shutter (SENS-UP): Electronic, Global
  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.)      : +7 deg C / humidity 60 %
  Star image stability              : good
  Minor planet visible              : yes
  Local conditions (degree)         : star height: 10, Sun height: -22, 
  Local moon conditions (degree)    : Moon height: below horizon

 8 ADDITIONAL COMMENTS:
  Star magnitude                          : 13.8
  Minor planet magnitude                  : 13.2
  Feed                                    : CentralEurope
  Distance (km)                           : 13.5
  Faintest star on CCD (mag)              : 14.9
  Exposure time				  :  2.0 s 
  Readout time				  :  0.02 s

  Predicted max. duration (secs) :  9.81 
  Predicted max. drop (mag)      :  0.5
  Predicted mid-event (UT)       : 00:17:03
  Predicted error in time (secs) :  3.5
  Probability			 : 90%