ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE (YYYY/MM/DD): 2017/06/01   
	STAR:        UCAC4 366124393
	ASTEROID:    1999 XP164
	N°:          23101

2 OBSERVER: 
	Name:    Peter DELINCAK       
	E-mail:  pdlink@astronomy.sk
	Address: SLOVAKIA, Hviezdoslavova 1971, 022 01  Cadca
	Phone:   +421 915 710 121
	Web:     www.astronomy.sk

3 OBSERVING STATION: 
	Nearest city:            Cadca
	Station:                 PDlink Observatory
	Longitude (DD MM SS.s):  E 18 42 09.47 (WGS84)
	Latitude  (DD MM SS.s):  N 49 24 15.20 (WGS84)
	Altitude (m):            680.231m (WGS84)
        Single|Multiple station: Single


                         +----------------------------+
4 TIMING OF EVENTS:      |                            |
                         |  EVENT REPORTED: POSITIVE  |
                         |                            |
                         +----------------------------+
  
	Event code
	S: observation Start   I: Interruption start
	D: Disappearance       J: Interruption end
	R: Reappearance        B: Blink   F: Flash
	E: observation End     O: Other (specify)
  
	Personal Equation Substracted: No
  
                                                  Comments
	Event   Time (UT)    P.E.   Acc.   
	Code   HH:MM:SS.ss   S.ss   S.ss
  
 	S  - 21:45:00.000          0.10s   :
 	   -             -      -          :
	D  - 21:52:29.168          0.10s   :
	R  - 21:52:31.054          0.10s   :
	   -             -      -          :
	E  - 21:53:00.000          0.10s   :
  
	Duration : 1,89s  +/- 0.2s
	Mid-event : 21:52:30.111


5 TELESCOPE: 
	Type:          Mirror optics  
	Aperture:      400mm        
	Magnification: prime focus (f/5)
	Mount:         EQUATORIAL         
	Motor drive:   YES

6 TIMING & RECORDING:
	Time source: GPS 1PPS Integral GPS Receiver
	Sensor: CCD camera QHY5 III 290
	Recording: It=100ms (10 Img/s), uncompressed AVI
	Recording device: PC W7 32b

7 OBSERVING CONDITIONS:
	Atmospheric transparency: GOOD     
	Wind:                     NO    
	Temperature:              11C
	Star image stability:     AVERAGE
	Minor planet visible:     NO

8 ADDITIONAL COMMENTS: 
        Event data details according to the predictions from LINOCC
        Predicted event time was 21:52:03 UTC (+/- 28s) for my observing position.
        Predicted maximum duration was 1.3 seconds with a 3.7 mag drop.
        Position was 58km from predicted central line in SE direction
        inside the 1-sigma with a probability of 4.1%.
        
        Asteroid is bigger than estimated diameter due to longer duration of occultation.

	Analyzed by Tangra.

        Receiving 10 satellites
        Horizontal Dilution of Precision 0.9