ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2021/05/09
  STAR: UCAC4 451-064176
  ASTEROID: (54514) 2000 PA12

2 OBSERVER: Name: Daniel BLAZEWICZ
            Address: 32-015 Klaj, POLAND

3 OBSERVING STATION: Klaj  Nearest city: Niepolomice (Poland)
  Longitude: E 20 19 04.2 (WGS84)
  Latitude:  N 49 59 33.2 (WGS84)
  Altitude:  211 m (MSL)
  Single station

                         +----------------------------+
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)
  
  Abbreviations
  P.E.: Personal Equation = reaction time (for visual obs)
  Acc.: Accuracy (overall accuracy of the given time)
  
                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH:MM:SS.ss   S.ss   S.ss
  
    S  - 21:51:26    -      -      :
    D  - 21:52:45.31 -      - 0.13 :
    R  - 21:52:46.31 -      - 0.13 :
    I  - 21:53:13    -      -      :   strong wind
    J  - 21:53:24    -      -      :
    E  - 21:55:03    -      -      :
  
                          Duration : 1.00 +/- 0.18 s
                         Mid-event : 21:52:45.81 +/- 0.06 s

5 TELESCOPE: Type: NEWTON    Aperture: 350 mm
             Magnification: prime focus f/4.8
             Mount: EQUATORIAL with polar wedge    Motor drive: YES

6 TIMING & RECORDING:
  Time source: NTP Stratum 1, Linux Ubuntu
  Sensor: ZWO ASI174MM-C
  Recording: ZWO ASICAP V2.3
  Exposure: 250 ms

  The approximate recording delay (25 ms) was based on report for similar
  hardware configuration and the same both USB setting, ROI, and exposure,
  published by Pierre Le Cam on http://www.nocturno.fr/ost/ost.html .
  
7 OBSERVING CONDITIONS:
  Atmospheric transparency: good  Wind: weak - strong   Temperature: 11 deg C
  Star image stability: fair      Minor planet visible: no

8 ADDITIONAL COMMENTS:
  Analyzed using Tangra v3.7.3 and AOTA v4.12.10
  S/N of occulted star: 6.5 - 8.7
  Camera temperature: -10 deg C

 Event details generated post-factum: JPL 2021/07/08, Gaia EDR3:
  Star reliable: 4.4 (beware)
  Event time: 21:52:47 UT
  Error in time: 4 s
  Max duration: 0.95 s
  Star magnitude: 14.0 m
  Asteroid magnitude: 19.7 m
  Combined magnitude: 14.0 m
  Magnitude drop: 5.8 m
  Position: In the 1-sigma zone
  Probability: 10 %