ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE (YYYY/MM/DD): 2018/05/21 STAR: UCAC4 503148530 ASTEROID: Ekard N°: 694 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 - 01:48:00.000 0.5s : - - - : D - 01:50:36.768 0.5s : R - 01:50:39.254 0.5s : - - - : E - 01:53:00.000 0.5s : Duration : 2.486s +/- 0.5s Mid-event : 01:50:38.011 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: QHY 5 III 290 Recording: It=500ms (2 Img/s), uncompressed AVI Recording device: PC W7 32b 7 OBSERVING CONDITIONS: Atmospheric transparency: GOOD Wind: NO Temperature: 8C Star image stability: NORMAL Minor planet visible: NO 8 ADDITIONAL COMMENTS: Event data details according to the predictions from LINOCC Predicted event time was 01:50:37 UTC (+/- 2s) for my observing position. Predicted maximum duration was 2.7 seconds with a 1.0-1.3 mag drop. Position was 9km from predicted central line in SE direction inside the shadow with a probability of 35.1%. Analyzed by Tangra. Receiving 09 satellites Horizontal Dilution of Precision 1.0