ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE:                  2021 Jun 09, 22:12 (UTC)

  STAR:                  UCAC4 369-123203      mv: 14.4 mag
  ASTEROID:              (2426) Simonov        mv: 15.4 mag  (diam. 27.0 km)
                         combined magnitude:   mv: 14.0 mag
                         delta-magnitude:      mv:  1.4 mag

2 OBSERVER:
  Name:                  Andreas SCHWEIZER
  E-mail:                aschweiz@mac.com
  Address:               Strumbergächerstr. 3A, 8907 Wettswil, Switzerland

3 OBSERVING STATION:
  Nearest city:          Bülach
  Station:               Sternwarte Bülach
  Latitude:              N47 31' 10.402" (WGS84)
  Longitude:             E08 34' 14.300" (WGS84)
  Altitude:              550 m (MSL)  (WGS84)

  Predicted observation: yes (Distance 13.8 km from C.L.)
                         Probability: 48.5 percent

  Single station:        yes

                         +----------------------------------+
4 TIMING OF EVENT:       |                                  |
                         |  OCCULTATION RECORDED: POSITIVE  |
                         |                                  |
                         +----------------------------------+
  Type of event:
   S = Start observation I = Interrupt-start   D = Disappearance
   B = Blink             F = Flash             E = End observation
   I = Interrupt-end     R = Reappearance
   M = Mid-event         P = Predicted time

  Event  Time (UTC)      Acc.         Comments
  Code   HH MM SS.sss    S.sss

   S     22 11 54.545    +/-  0.001 s  : Start observation (UTC)
   D     22 12 26.125    +/-  *1)   s  : Disappearance     (UTC)
   R     22 12 27.879    +/-  *2)   s  : Reappearance      (UTC)
   E     22 12 54.946    +/-  0.001 s  : End observation   (UTC)

   Duration:    1.754    +/-  *3)   s  : (predicted: max. 2.8 s)

   P     22 12 24.735    +/-  2.391 s  : Predicted time    (UTC)

*1)
D time: [22:12:26.1250]
D: 0.6800 confidence intervals:  {+/- 0.0795} seconds
D: 0.9500 confidence intervals:  {+/- 0.2075} seconds
D: 0.9973 confidence intervals:  {+/- 0.5579} seconds

*2)
R time: [22:12:27.8790]
R: 0.6800 confidence intervals:  {+/- 0.0795} seconds
R: 0.9500 confidence intervals:  {+/- 0.2075} seconds
R: 0.9973 confidence intervals:  {+/- 0.5579} seconds

*3)
Duration (R - D): 1.7540 seconds
Duration: 0.6800 confidence intervals:  {+/- 0.1224} seconds
Duration: 0.9500 confidence intervals:  {+/- 0.2906} seconds
Duration: 0.9973 confidence intervals:  {+/- 0.6939} seconds

5 TELESCOPE: 
  Type:                  Newton Reflector f/5
  Aperture:              500 mm
  Focal length:          2500 mm
  Magnification:         focal (resulting field of view: 15.5' in x-axis)
  Mount:                 equatorial
  Motor drive:           yes

6 TIMING & RECORDING:
  Time source:           GPS
  Quality of signal:     Accuracy 1m
  Camera/Sensor:         Digital Camera with integrated GPS-VTI (DVTI CAM Prototype V3 RC2, serial #20)
                         Image Sensor Sony IMX174LLJ-C (1/1.2" 1920x1200 5.86um CIS)
                         Website of the project: https://groups.io/g/d-vti-cam/
  Settings:              960x600, Exposure time 250 ms, Gain +30 dB D, Binning 2x2, Format ADV 16-bit
  Time insertion:        Digital GNSS timestamp into image sensor data stream

7 OBSERVING CONDITIONS:
  Atmospheric transp.:   good
  Moon:                  below horizon
  Wind:                  none
  Star image stability:  good
  Altitude of star:      19 deg
  Azimut of star:        144 deg in Sagittarius

8 ADDITIONAL COMMENTS:
  Feed:                      ITALOccult Events
  Video recording software:  DVTI Cam Control v4.12.0-0
  Light measurement tool:    PyMovie 2.9.7, PyOTE 3.7.4
  Remarks:               

  Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)