ASTEROIDAL OCCULTATION - REPORT FORM

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

 1 DATE: 15 October 2018                             STAR:  TYC 3340-02139-1 

 ASTEROID: Eros                                        No: 433

 2 OBSERVER: 
 Name      : Wojciech Burzynski                        MPC-Code: 
 Address   : 15-345 Bialystok, Poland


 3 OBSERVING STATION: 
  Nearest city : Bialystok
  Station      : Ignatki
  Latitude     : 53 04 07.7 N
  Longitude    : 23 06 05.0 E
  Altitude     : 143 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  - 02:18:51.0     -    - 0.1                
 E  - 02:22:38.0     -    - 0.1  
                                       
 Predicted max. duration (secs) : 2.4
 Predicted max. drop (mag)      : 0.4-1.2
 Predicted Mid-event (UT)       : 02:20:37
 Predicted error in time (secs) : 2 

 Was your reaction time applied to the above timings? not relevant, VTI recording
  
 5 TELESCOPE: 
 Type: Newton  f/5                    Aperture: 300 mm
 Focal length: 1500 mm                FOV : 11.0'x 8.5'
 Mount: azimuthal                     Motor drive: yes

 6 TIMING & RECORDING:
  Time source: GPS VTI 1PPS by Tomasz Wezyk, 
  Sensor:      CCDTV videocamera NOVUS NVC GDN5811C-2, 1/3" SONY EXview HAD II
  Mode of recording: 25 fps
  Shutter: 1/50 s
  Auto Gain Control (AGC): LOW
  Digital Noise Reduction (DNR)  : OFF
  Recording: Laptop Dell Latitiude 3540 (Intel Core i5/RAM 8 GB/SSD 128 GB)
  Recording: Video Grabber Aver Media EzMaker 7, VirtualDub 2, AVI compressed by Lagarith codec 
  Time insertion: VTI by Tomasz Wezyk (www.tomasztech.pl)

 7 OBSERVING CONDITIONS: 
  Atmospheric transparency       : good 
  Wind  (km/h)                   : 4
  Temperature (deg C / humid.)   : 5 / 80
  Star image stability           : good 
  Minor planet visible           : yes
  Local conditions (degree)      : star altitude: 79, sun altitude: -23, 
  Local moon conditions (degree) : moon below horizon

 8 ADDITIONAL COMMENTS:
  Observed star               : TYC 3340-02139-1
  Star magnitude              : 11.50
  Minor planet magnitude      : 11.50
  Feed                        : IBEROC, 26 Sep 2018
  Rank                        : 80
  Distance (km)               : 5 SE from the central line, in the shadow
  Shadow (km)                             : 16
  Predicted probability OccultWatcher (%) : 48.9
  Predicted combined magnitude (mag)      : 10.75 
  Faintest star on AVI (mag)              : 12.7
  Evaluation with Tangra 3.6.17.