ASTEROIDAL OCCULTATION - REPORT FORM

1 DATE: 20/05/2018                            STAR:  TYC 6168-860-1

  ASTEROID: (J6) Himalia                             No: 


2 OBSERVER: Name:    Adam Nowak                  MPC-Code: 
            Address: 26-026 Bilcza, POLAND

3 OBSERVING STATION: Nearest city: Kielce
  Station:   Bilcza
  Latitude:  50 47 05.3 N
  Longitude: 20 36 23.9 E
  Altitude:  258 MSL

  Datum (WGS84 preferred): WGS84

  Single, OR Double or Multiple station (Specify observer's name): 

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)

                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S  - 22:16:54.46  -        - 0.1
    D  - 22:17:49.44  -        - 0.1              
    R  - 22:17:56.80  -        - 0.1     , duration : 7.36 sec
    E  - 22:19:04.83  -        - 0.1     
     
          predicted max. duration : 8.8 
          predicted magnitude drop : 4.6
          predicted Mid-event : 22:17:55 UT (approx.)


  Was your reaction time applied to the above timings? not relevant, CMOS camera recording
 
5 TELESCOPE: Type: Newtonian       Aperture: 200 mm
             Focal length: 1000 mm          FOV : 8.7' x 13.3'
             Mount: equatorial, HEQ5      Motor drive: yes

6 TIMING & RECORDING:
  Time source: NTP server (time.windows.com) 
  Sensor:      monochrome CMOS camera ASI178MM-c, resolution: 1040x1600, 8-bit, matrix: 1/1.8" 
  Mode of recording: gain 400, exposure time 120 ms, shutter speed 8.4 FPS, camera cooled down to  -25 C 
  Recording: Laptop DELL Inspiron 13 7000 series, 4GB RAM, Intel Core i5-6200U, 512GB HDD, software: SharpCap 3.0
7 OBSERVING CONDITIONS: 
  Atmospheric transparency    : good 
  Wind (km/h)                 : 5
  Temperature (deg C)         : 15 
  Star image stability        : good 
  Minor planet visible        : no

8 ADDITIONAL COMMENTS:
  Observed star                          : TYC 6168-860-1
  Star position source                   : Gaia DR2
  Star magnitude                         : 10.4
  Minor planet magnitude                 : 15.0
  Minor planet diameter                  : 170 km (0.054")
  Shadow width                           : 377 km
  Probability                            : 72.4%
  Travel distance                        : 96 km SW from the central line, in the shadow
  Feed                                   : RIO-TNO (18.05.2018)
  Local conditions               (degree): star height: 23, sun height: -19, sun distance: 167
  Local moon conditions          (degree): moon height: 36, moon distance: 93
  Faintest star on AVI              (mag): 12,2
  Evaluation with Tangra 3.6.16 by W. Burzynski