ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 24 March 2020                              STAR: UCAC4 468-047194 

  ASTEROID: Henan                                     No: 2085

 2 OBSERVERS: 
  Name      : Wojciech Burzynski                    Abrr: BZY
  Address   : 15-345 Bialystok, Poland

 3 OBSERVING STATION: 
  Nearest city : Suprasl
  Station      : Lipowy Most                 Acc.
  Latitude     : 53 12 31.5 N            -   0.1"
  Longitude    : 23 31 37.9 E            -   0.1"
  Altitude     : 145 MSL                 -   1 m

  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  - 19:51:35.9      -     - 0.1
  E  - 19:54:57.7      -     - 0.1 

  Predicted max. duration (secs) : 1.3
  Predicted max. drop (mag)      : 2.33
  Predicted mid-event (UT)       : 19:53:35
  Predicted error in time (secs) : 3 

  Was your reaction time applied to the above timings? - not relevant, D-VTI recording
  
 5 TELESCOPE: 
  Type        : SCT  f/10                             Aperture   : 200 mm
  Focal length: 2000 mm                               FOV        : 19.34'x 12.09'
  Mount       : azimuthal                             Motor drive: yes

 6 TIMING & RECORDING:
  Time source      : GPS 1PPS  
  Sensor           : QHY 174M GPS, CMOS cooled camera
  Mode of recording: 1920x1200, 8 bit SER, Amp Noise Reduction=On, Gain=400, USB Traffic=0, Contrast=0, Brightness=0, Gamma=0.5
                     Calibration End Pos Adjust=30004298, Calibration Start Pos Adjust=6301
  Shutter          : 0.400 s
  Recording        : Laptop Dell Latitiude 3540 (Intel Core i5/RAM 8 GB/SSD 128 GB)
  Recording        : SharpCap 3.2.6248.0

 7 OBSERVING CONDITIONS: 
  Atmospheric transparency          : perfect 
  Wind  (m/s)                       : 2
  Temperature (deg C / humid.)      : -1 / 75
  Star image stability              : good 
  Minor planet visible              : no
  Local conditions (degree)         : star altitude: 29, sun altitude: -26, 
  Local moon conditions (degree)    : below horizon

 8 ADDITIONAL COMMENTS:
  Observed star                           : UCAC4 468-047194
  Star magnitude (mag)                    : 13.4
  Minor planet magnitude (mag)            : 15.6
  Feed                                    : UKOCL, last updated Mar 03, 2020
  Rank                                    : 31
  Distance (km)                           : in the 1-sigma zone, 10 km outside the shadow path
  Travel distance (km)                    : 19 km S
  Shadow width (km)                       : 18
  Predicted probability OccultWatcher (%) : 16.2
  Predicted combined magnitude (mag)      : 13.27 
  Faintest star on AVI (mag)              : 14.7
  Evaluation with Tangra 3.6.23