ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE (YYYY/MM/DD): 2022/03/22 STAR: UCAC4 564-032185 ASTEROID: 1999 RF110 N°: 86104 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 - 22:02:30.000 0.050s : - - - : D - : R - : - - - : E - 22:04:30.000 0.050s : 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=0.050s (20.0 Img/s), uncompressed SER Recording device: W7 32b Computer SSD Time insertion (specify): Precision GPS Time Video Overlay Unit => GPS++ 7 OBSERVING CONDITIONS: Atmospheric transparency: GOOD Wind: NO Temperature: -2C Star image stability: AVERAGE Minor planet visible: NO 8 ADDITIONAL COMMENTS: Event data details according to the predictions from ItalOccult. Predicted event time was 22:03:27 UTC (+/- 3s) for my observing position. Predicted maximum duration was 0.4 seconds with a 6.2 mag drop. Position was 80km from predicted central line in SW direction inside the 2-sigma limit with a probability of 1.6%. Receiving 08 satellites Horizontal Dilution of Precision 1.2 Analyzed by Tangra. Synchronization of Windows system time was by NTP Time Server Monitor(Meinberg), checked by TimeMemo software and during observation was recorded a special video record with both PC Windows system timestamps and timestamps produced from GPS 1PPS Integral GPS Receiver Blackbox (recorded by own software). Difference between real GPS time and system timestamps of disappearance/reappearance in recorded occultation video was aplied. Timestamps in SER are athe the end of frame so all times was corrected by exposure time as well.