ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2021 June 30 STAR: UCAC4 414-122338 ASTEROID: (1403) Idelsonia 2 OBSERVER: Name: Yves Argentin Abbr: E-mail: yves.argentin@obs-mip.fr Address: Camin Deth Biscarmiau 65200 Visker - France 3 OBSERVING STATION: Nearest city: VISKER (65200) Station: Observatoire de Biscarmiau (= Yves A Home) Latitude: N 43 08 40.4 (WGS84) Longitude: E 00 03 31.8 (WGS84) Altitude: 488 m Single, OR Double or Multiple station (Specify observer's name): Single +----------------------------------+ 4 TIMING OF EVENTS: | | | OCCULTATION RECORDED: POSITIVE | | | +----------------------------------+ 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 - 21:02:59.202 - - : on frame n°8 (Correction Gérard Dangl) - - - : D - 21:03:42.36 - +/-0.04s : on frame n°548 R - 21:03:45.64 - +/-0.04s : on frame n°589 - - - : E - 21:04:28.481 - - : on frame n°1124 Duration : 3,28 +/- 0.08s (predicted : 3,6 s max.) Mid-event : 21:03:44.00 +/-0.14s (predicted : 21:03:42 +/- 7 s) Was your reaction time applied to the above timings? NO 5 TELESCOPE: Type: NEWTON Aperture: 305 mm Magnification: Focus 1188 mm Mount: Equatorial Motor drive: YES 6 TIMING & RECORDING: Time source: GPS 1 PPS Sensor: CAMERA WATEC 910HX/RC CCIR - integrated Shutter Low x4 (0,08 sec/f) - Gamma: 1 - Gain: 36dB Recording: OccuRec V 3.3.1 Beta and Grabber Lindy USB2 - mode AAV - Intégration rate: x2 Time insertion (specify):IOTA VTI V3 (CCIR) Event insertion (specify): PC-Windows 10 7 OBSERVING CONDITIONS: Atmospheric transparency: good Wind: 0 ms Temperature: 20 °C Star image stability: good Minor planet visible: no 8 ADDITIONAL COMMENTS: Probability : 25 % Predicted Max Duration: 3,6 sec Error in Time: +/- 7 sec Predicted Combined Magnitude: 11,2 mag Predicted Magnitude Drop: 3,6 mag