ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE (YYYY/MM/DD): 2020/02/28 STAR: UCAC4 458-004830 ASTEROID: Iduna N°: 176 2 OBSERVER: Name: Robert Schaefer, Andreas Kreutzer EAON Abbr: E-mail: andreas.kreutzer@harpoint-observatory.com Address: Endresstrasse 41, 1230 Vienna 3 OBSERVING STATION: Nearest city: Harpoint, Austria Station: Longitude (DD MM SS.s): E 13 21 06 (WGS84) Latitude (DD MM SS.s): N 47 54 33 (WGS84) Altitude (m): 700 Single station +----------------------------+ 4 TIMING OF EVENTS: | | | EVENT REPORTED: POSITIVE | | | +----------------------------+ 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) Abbreviations P.E.: Personal Equation = reaction time (for visual obs) Acc.: Accuracy (overall accuracy of the given time) Comments Event Time (UT) P.E. Acc. Code HH:MM:SS.ss S.ss S.ss S - 19:50:02 - - : - - - : D - 19:52:05.33 - - 0.1 : R - 19:52:10.00 - - 0.1 : - - - : E - 19:53:54 - - : Duration : 4.67 +/- 0.15 Mid-event : 19:52:7.66 5 TELESCOPE: Type: Ritchey-Chrétien Aperture: 500 mm Magnification: f/8 prime focus Mount: fork Motor drive: computer controlled 6 TIMING & RECORDING: Time source: Navilock NL-8022MP GPS with PPS Sensor: ZWO ASI 174MM camera, 0.2s integration time, 2x binning mode Recording: SharpCap 3.2 on Windows 10 Time insertion (specify): computer time synchronized with GPS sensor; computer time delay to GPS clock monitored and logged during observation, then correction applied to exposure times (18ms delay) Event insertion (specify): ? 7 OBSERVING CONDITIONS: Atmospheric transparency: good Wind: no Temperature: -3 deg Star image stability: FWHM 3-5" Minor planet visible: yes 8 ADDITIONAL COMMENTS: 44 km south of the centerline Probability: 71,7% Photometric analysis performed with Tangra3