ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 15 October 2019 STAR: UCAC4 707-014626 (11.1 mag) ASTEROID: Phaethon No: 3200 2 OBSERVER: Name: Marek Zawilski Abbr: Address: 91-473 Lodz, Poland 3 OBSERVING STATION: Nearest cities: Lodz and Poddebice Station: Tobolice Latitude: 51d 54' 48.3" N Longitude: 19d 03' 22.4" E Altitude: 140m MSL Datum (WGS84 preferred): WGS84 Single, OR Double or Multiple station (Specify observer's name): SINGLE +----------------------------------+ 4 TIMING OF EVENTS: | | | OCCULTATION RECORDED: NEGATIVE | | | +----------------------------------+ Type of event Start observation Interrupt-start Disappearance Blink Flash End observation Jnterrupt-end Reappearance Other (specify) Comments Event Time (UT) P.E. Acc. Code HH:MM:SS.ss S.ss S.ss S - 19:45:09 - N/A - 1 : D - - - : R - - - : E - 19:48:00 - N/A - 1 : Duration : no occultation longer than 0.1 s Mid-event : Predicted mid-event : 15 Oct; 19:46.5 UT Was your reaction time applied to the above timings? N/A 5 TELESCOPE: Type: Cassegrain Aperture: 203mm Magnification: --- Mount: Equatorial Motor drive: YES Foc.length: 2032mm reduced to 1016mm 6 TIMING & RECORDING: Time source: NTP via Dimension4 using the time server "vega.cbk.poznan.pl", laptop-time synchronized better than 0.05s, response of about 10 Polish ntp time servers checked evry one minute with the use of the professional software by T.Kluwak. Sensor: ZWO ASI 120MM, shutter set for 100 ms, image resolution 640x480 px, gain 100 Recording: ASICAP software ver.1.6.1, effective time resolution: 0.100 s. 7 OBSERVING CONDITIONS: Atmospheric transparency: good Wind: none Temperature: 15 deg C Star image stability: good Minor planet visible: no 8 ADDITIONAL COMMENTS: The observations in a clear sky - no magnitude drop longer than 0.1 s noticed. Event probability at site : close to 0% Distance from center line : about 240 km. Bright Moon did not disturb observations.