ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 29/09/2017                             STAR:  TYC 1870-01460-1

  ASTEROID: Malva                              No: 1072


2 OBSERVER: Name:    Gabriel Murawski              MPC-Code: 
            Address: 16-400 Suwałki, POLAND

3 OBSERVING STATION: Nearest city: Suwalki
  Station:   Suwalki 
  Latitude:  54 06 17.8 N
  Longitude: 22 54 34.8 E
  Altitude:  171 MSL

  Datum (WGS84 preferred): WGS84

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

                         +----------------------------------+
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)

                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S  - 02:00:51.70 -        - 0.1
    D  - 02:01:57.69 -        - 0.1              
    R  - 02:01:58.73 -        - 0.1     , duration : 1.04 sec
    E  - 02:03:04.40 -        - 0.1     
     
           predicted max. duration : 3.6 
          predicted magnitude drop : 4.23
               predicted Mid-event : 02:02:03 UT (approx.)


  Was your reaction time applied to the above timings? not relevant, CMOS camera recording
 
5 TELESCOPE: Type: telelens (Canon)               Aperture: 107 mm
             Focal length: 300 mm, f/2.8          FOV : 29'x 36'
             Mount: equatorial, NEQ5              Motor drive: yes

6 TIMING & RECORDING:
  Time source: NTP server (time.windows.com) +'Time the Sat' app for additional control
  Sensor:      monochrome CMOS camera ASI178MM-c, resolution: 1280x1024, 8-bit, matrix: 1/1.8" 
  Mode of recording: gain 500/510, exposure time 67ms, shutter speed 15 FPS, camera cooled down to -20 C 
  Recording:         Laptop ASUS R500VM, RAM 12 GB, Intel Core i5, HDD 750 GB, software: SharpCap
7 OBSERVING CONDITIONS: 
  Atmospheric transparency    : good 
  Wind (km/h)                 : 5
  Temperature (deg C)         : 20 
  Star image stability        : good 
  Minor planet visible        : no

8 ADDITIONAL COMMENTS:
  Observed star                          : TYC 1870-01460-1
  Star position source                   : Gaia TGAS
  Star magnitude                         : 11.19
  Minor planet magnitude                 : 15.4
  Minor planet diameter                  : 53 km (0.036")
  Shadow width                           : 62 km
  Probability                            : 70.7%
  Travel distance                        : 9 km SE from the central line, in the shadow
  Feed                                   : IOTA (14.09.2017)
  Local conditions               (degree): star height: 58, sun height: -21, sun distance: 100
  Local moon conditions          (degree): moon height: below horizon
  Faintest star on AVI              (mag): 12,0
  Evaluation with Tangra 3.6.12