ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 24 March 2022                              STAR: UCAC4 454-033141

  ASTEROID: Ohio                                      No: 439

 2 OBSERVER: 
  Name      : Maciej Borkowski                               
  Address   : 16-001 Ksiezyno, Poland

 3 OBSERVING STATION: 
  Nearest city : Augustow
  Station      : Mobile                   Acc.
  Latitude     : 53 51 22.0 N            -   0.1"
  Longitude    : 22 54 12.5 E            -   0.1"
  Altitude     : 137                     -   1m

  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  - 22:19:00.73
  D  - 22:21:00.23 +/- 0.08
  R  - 22:21:02.55 +/- 0.08
  E  - 22:23:01.09            

  Duration: 2.32 +/- 0.11 sec  


  All times above have + 0.02 sec correction added due to TIM-10 VTI.
	  

  Predicted max. duration (secs) : 5.6
  Predicted max. drop (mag)      : 2.7
  Predicted mid-event (UT)       : 22:21:02
  Predicted error in time (secs) : 2

  Was your reaction time applied to the above timings? - not relevant
  
 5 TELESCOPE: 
  Type        : Newton f/5                            Aperture   : 300 mm
  Focal length: 1500 mm                               FOV        : 20'x 13'
  Mount       : azimuthal                             Motor drive: yes

 6 TIMING & RECORDING:
  Time source      : AME Video time inserter TIM - 10 (GPS time)  
  Sensor           : Runcam Eagle 2 Pro with 0,5 GSO focal reducer 
  Mode of recording: 8 bit AVI, Gain: 7/9
  Shutter          : 0.16 s (night shutter 3)
  WDR:		   : off
  Zoom:		   : 0
  Image enhance:   : all on auto  
  Recording        : HP elitebook 8470p (Windows 10)
  Recording        : VirtualDub64 2.0.0.0

 7 OBSERVING CONDITIONS: 
  Atmospheric transparency          : average (thin fog)
  Wind  (m/s)                       : 4
  Temperature (deg C)    	    : 3
  Star image stability              : decent
  Minor planet visible              : no
  Local conditions (degree)         : star altitude: 13 W, sun altitude: -34
  Local moon conditions (degree)    : below horizon

 8 ADDITIONAL COMMENTS:
  Observed star                           : UCAC4 454-033141
  Star magnitude (mag)                    : 12.5
  Minor planet magnitude (mag)            : 15.2
  Feed                                    : CentralEurope, last updated January 24, 2022
  Rank                                    : 100
  Distance (km)                           : in the shadow, 31 km from the central line
  Travel distance (km)                    : 31 km N
  Shadow width (km)                       : 71
  Predicted probability OccultWatcher (%) : 60.1
  Predicted combined magnitude (mag)      : 12.5
  Faintest star on AVI (mag)              : 13.0