ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE (YYYY/MM/DD): 2020/08/25 STAR: UCAC4 349-145645 ASTEROID: 1997 BR1 N°: 11644 2 OBSERVER: Name: Peter DELINCAK EAON Abbr: PDL 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: NEGATIVE | | | +----------------------------+ 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 - 19:27:00.000 0.100s : - - - : D - : R - : - - - : E - 19:29:00.000 0.100s : Duration : Mid-event : 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=0.100s (10.0 Img/s), uncompressed AVI Recording device: W7 32b Computer HDD Time insertion (specify): Precision GPS Time Video Overlay Unit => GPS++ 7 OBSERVING CONDITIONS: Atmospheric transparency: GOOD Wind: NO Temperature: 12C Star image stability: AVERAGE Minor planet visible: NO 8 ADDITIONAL COMMENTS: Event data details according to the predictions from ItalOccult. Predicted event time was 19:27:43 UTC (+/- 11s) for my observing position. Predicted maximum duration was 3.4 seconds with a 4.7 mag drop. Position was 44km from predicted central line in WE direction inside the 1-sigma limit with a probability of 7.1%. Analyzed by Tangra.