ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 05 April 2020                              STAR: TYC 753-01648-1 

  ASTEROID: Piyaschiriyama                            No: 16466

 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  - 21:38:31.6      -     - 0.1
  E  - 21:43:30.9      -     - 0.1 

  Predicted max. duration (secs) : 0.5
  Predicted max. drop (mag)      : 7.2
  Predicted mid-event (UT)       : 21:40:59
  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=350, USB Traffic=0, Contrast=0, Brightness=0, Gamma=0.76
                     Calibration Start Pos Adjust=6301, Calibration End Pos Adjust=7504298
  Shutter          : 0.100 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          : good 
  Wind  (m/s)                       : 2
  Temperature (deg C / humid.)      : -1 / 75
  Star image stability              : good 
  Minor planet visible              : no
  Local conditions (degree)         : star altitude: 16, sun altitude: -30 
  Local moon conditions (degree)    : Moon altitude: 46, Moon distance: 61, Moon phase: +93

 8 ADDITIONAL COMMENTS:
  Observed star                           : TYC 753-01648-1 
  Star magnitude (mag)                    : 10.3
  Minor planet magnitude (mag)            : 17.5
  Feed                                    : UKOCL, last updated Mar 03, 2020
  Rank                                    : 31
  Distance (km)                           : outside 3-sigma limit, 463 km from the central line
  Shadow width (km)                       : 12
  Predicted probability OccultWatcher (%) : 0.0
  Predicted combined magnitude (mag)      : 10.3 
  Faintest star on AVI (mag)              : 12.2
  Evaluation with Tangra 3.6.23