ASTEROIDAL OCCULTATION - REPORT FORM +--------------------------------+ +----------------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +--------------------------------+ +----------------------------------------+ 1 DATE: 19 July 2022 STAR: UCAC4 446-127199 ASTEROID: 1998 FO75 No: 16931 2 OBSERVER : Name : Anna Marciniak Abrr: Address : Astronomical Observatory Institute, A. Mickiewicz University, Sloneczna 36, Poznan, Poland 3 OBSERVING STATION: Nearest city : Poznan Station : Chalin IAU obs code: - Latitude : 52 36 14.0 N Longitude : 16 02 33.4 E Altitude : 123 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: "S"tart observation "I"nterrupt-start "D"isappearance "B"link "F"lash "E"nd observation "J"nterrupt-end "R"eappearance "O"ther (specify) Event Time (UT) P.E. Acc. Code HH MM SS.ss S.ss S.ss S - 20:24:00.68 - - 0.01 D - - - R - - - E - 20:25:50.41 - - 0.01 Duration : - Mid-event : - Was your reaction time applied to the above timings? - not applicable. 5 TELESCOPE: Type : Cassegrain f/5.3 Aperture : 350 mm Focal length: 1855 mm FOV : 19'x 21' Mount : altazimuth Motor drive: yes 6 TIMING & RECORDING: Time source : GPS++ Sensor : Andor Zyla 5.5 camera with sCMOS sensor Mode of recording: Binning 4x4, Image size: Full Shutter (SENS-UP): Electronic, Global Recording : Personal Computer Recording : Own software Time insertion : Start exposure times inserted into FITS headers with own software 7 OBSERVING CONDITIONS: Atmospheric transparency : good Wind (km/h) : 8 Temperature (deg C / humid.) : 25 deg C / humidity 70% Star image stability : poor Minor planet visible : no Local conditions (degree) : star height: 26, Sun height: -10 Local moon conditions (degree) : Moon height: 0 8 ADDITIONAL COMMENTS: Star magnitude : 12.9 Minor planet magnitude : 18.2 Feed : Central Europe Distance (km) : 34.3 km Faintest star on CCD (mag) : 13.5 Exposure time : 0.25 s Readout time : 0.02 s Predicted max. duration (secs) : 0.9 Predicted max. drop (mag) : 5.32 Predicted mid-event (UT) : 21:24:26 Predicted error in time (secs) : 4.3 Probability : 12%