ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2021 July 20       STAR: UCAC4 388-141774      ASTEROID: (35627) 1998 KW9

2 OBSERVER: Name:  Yves Argentin           Abbr:
            E-mail: yves.argentin@obs-mip.fr
            Address: Camin Deth Biscarmiau 65200 Visker - France

3 OBSERVING STATION: Nearest city: VISKER (65200)
  Station: Observatoire de Biscarmiau (= Yves A Home)
  Latitude:  N 43 08 40.4 (WGS84)
  Longitude: E 00 03 31.8 (WGS84)
  Altitude: 488 m

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

                          +----------------------------------+
4 TIMING OF EVENTS:       |                                  |
                          |  OCCULTATION RECORDED: POSITIVE  |
                          |                                  |
                          +----------------------------------+
  Type of event
  Start observation   Interrupt-start   Disappearance   Blink   Flash
  End observation     Jnterrupt-end     Reappearance    Other (specify)
                                                  
                               Comments
  Event   Time (UT)    	P.E.   Acc.   
  Code   HH:MM:SS.ss   	S.ss   S.ss
  
    S  - 03:15:26.468   -      -      :	on frame n°8 (Correction Gerard Dangl)
       -             	-      -      :
    D  - 03:16:09.51    -   +/-0.08s  : on frame n°277
    R  - 03:16:11.59    -   +/-0.08s  : on frame n°290
       -             	-      -      :	 	
    E  - 03:16:54.948  	-      -      : on frame n°561  		
  
 			     Duration : 2,08 +/- 0.11s	(predicted : 1,8 s max.)
  			    Mid-event : 03:16:10.55  (predicted : 03:16:10 +/- 4 s)
  
  Was your reaction time applied to the above timings? NO
 
5 TELESCOPE: Type: NEWTON          Aperture: 305 mm        Magnification: Focus 1188 mm
             Mount: Equatorial     Motor drive: YES

6 TIMING & RECORDING: 
  Time source: GPS 1 PPS 
  Sensor: CAMERA WATEC 910HX/RC CCIR  - integrated Shutter Low x8 (0,16 sec/f) -
  Gamma: 1   -   Gain: 41dB
  Recording: OccuRec V 3.3.1 Beta and Grabber Lindy USB2 - mode AAV - Intégration rate: x4
  Time  insertion (specify):IOTA VTI V3 (CCIR)
  Event insertion (specify): PC-Windows 10

7 OBSERVING CONDITIONS: 
  Atmospheric transparency: good     Wind: 0 ms       Temperature:  23 °C
  Star image stability: good         Minor planet visible: no

8 ADDITIONAL COMMENTS: 
  Probability : 26 %
  Predicted Max Duration: 1,8 sec 
  Error in Time: +/- 4 sec 
  Predicted Combined Magnitude: 12,6 mag 
  Predicted Magnitude Drop: 3,6 mag