ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE:                  2019 February 12, 22:07 (UTC)

  STAR:                  UCAC4 391-054298      mv: 14.0 mag
  ASTEROID:              (15454) 1998 YB3      mv: 16.7 mag  (diam. ? km)
                         combined magnitude:   mv: 13.9 mag
                         delta-magnitude:      mv:  2.8 mag

2 OBSERVER: 
  Name:                  Stefan MEISTER and Andreas SCHWEIZER
  E-mail:                meister@dolphins.ch
  Address:               Sandgruebstr. 9, CH-8193 Eglisau, Switzerland

3 OBSERVING STATION: 
  Nearest city:          Buelach, Switzerland
  Station:               Observatory Buelach (MPC Observatory Code: 167)
                         http://www.sternwartebuelach.ch/
  Latitude:              N 47 31 10.4 (WGS84)
  Longitude:             E 08 34 14.3 (WGS84)
  Altitude:              550 m (MSL)  (WGS84)

  Predicted observation: yes (located outside of predicted path)
  
  Single station:        Stefan MEISTER and Andreas SCHWEIZER

                         +----------------------------------+
4 TIMING OF EVENT:       |                                  |
                         |  OCCULTATION RECORDED: NEGATIVE  |
                         |                                  |
                         +----------------------------------+
  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 07 29.833    +/- 0.01s   : Start observation (UTC)
   D     -           	             : Disappearance     (UTC)
   R     -           	             : Reappearance      (UTC)
   E     22 10 13.778    +/- 0.01s   : End observation   (UTC)

   Duration:                   - s   : (predicted: max. 1.7 s)

   M     -           	             : Mid-event         (UTC)
   P     22 07 31        +/- 9.0 s   : Predicted time    (UTC)

        
5 TELESCOPE: 
  Type:                  Newton Reflector f/5
  Aperture:              500 mm
  Focal length:          2500 mm
  Magnification:         focal (resulting field of view: 6.6' in x-axis)
  Mount:                 equatorial
  Motor drive:           yes

6 TIMING & RECORDING:
  Time source:           GPS
  Camera/Sensor:         Digital Camera with integrated GPS-VTI (Prototype)
                         AR0130CSSM, Pixel size 3.75my, QE 77%
  Settings:              640x480, 2x Binning, Gain 10, Exposure time 1.000s, Output format SER
  Time insertion:        within Camera, binary and visual timestamp
  Recording:             Unfortunately started very late

7 OBSERVING CONDITIONS:
  Atmospheric transp.:   Cirrus
  Moon:                  Moonlight (113° distance)
  Wind:                  no
  Star image stability:  good
  Minor planet visible:  no

8 ADDITIONAL COMMENTS:    
  Feed:                      IBEROC
  Video recording software:  SharpCap 3.1.5220
  Light measurement tool:    Tangra v3.6
  Comparison Stars:          2 stars
  
  
  Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)