ASTEROIDAL OCCULTATION - REPORT FORM +--------------------------------+ +----------------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +--------------------------------+ +----------------------------------------+ 1 DATE: 16 December 2021 STAR: UCAC4 617-038657 ASTEROID: Sundmania No: 1424 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: POSITIVE | +----------------------------------------------+ 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 - 19:02:51.49 - - 0.01 D - 19:03:50.07 - - 0.50 R - 19:03:55.12 - - 0.50 E - 19:04:51.68 - - 0.01 Duration : 5.05 +/- 0.71 Mid-event : 19:03:52.59 +/- 0.50 Was your reaction time applied to the above timings? - not applicable. 5 TELESCOPE: Type : Cassegrain f/0.19 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, Rolling 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) : 18 Temperature (deg C / humid.) : +5 deg C / humidity 85 % Star image stability : good Minor planet visible : yes Local conditions (degree) : star height: 33, Sun height: -38, Local moon conditions (degree) : Moon height: 50 8 ADDITIONAL COMMENTS: Star magnitude : 14.5 Minor planet magnitude : 14.8 Feed : IBEROC Distance (km) : 2.0 km Faintest star on CCD (mag) : 15.0 Exposure time : 1.0 s Readout time : 0.01 s Predicted max. duration (secs) : 5.0 Predicted max. drop (mag) : 0.93 Predicted mid-event (UT) : 19:03:52 Predicted error in time (secs) : 1.8 Probability : 100 %