ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2020 October 31 STAR: UCAC4 380-169030 ASTEROID: (351) Yrsa 2 OBSERVER: Name: Gérard VAUDESCAL Abbr:VDC E-mail: gg.vaudescal@free.fr Address: 65380 Azereix - France 3 OBSERVING STATION: Nearest city: AZEREIX(65380) Station: Observatoire d'Azereix Latitude: N 43 12 36.0 (WGS84) Longitude: W 00 00 46.5 (WGS84) Altitude: 340 m 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) Event Time (UT) Acc. Comments Code HH MM SS.ss S.ss S - 18:45:27.04 on frame n°7 D - +/- R - +/- E - 18:47:29.6 on frame n°220 Duration : sec ___ +/-___ Mid-event: __:___:__ UT (Pédicted 18:46:14 +/- 9sec) Was your reaction time applied to the above timings? NO 5 TELESCOPE: Type: Ritchey Chrétien RC10 Aperture: 254 mm Magnification: Focus 1340 mm (2000x0,67 reducer) Mount: Equatorial Motor drive: YES 6 TIMING & RECORDING: Time source: GPS 1 PPS Sensor: CAMERA ASI178MM - Binning x2 - Exposition :0,684sec/f) => 1,462 fps Gamma na - Gain 510/510 Recording: Genika Astro 8bits mode SER - Time insertion: module GPS_DCD_Time (Genika)-Synchronisation times UTC/frames with module File_Convert(Génika) Event insertion (specify): PC-Windows10 7 OBSERVING CONDITIONS: Clear Sky Wind: 0 ms Temperature: 15 °C Star image stability: middle - (seeing 1.7arcsec) Minor planet visible: Yes 8 ADDITIONAL COMMENTS: Reduction under TANGRA 3.7.3 Rev 20200512 Predicted Max Duration: 6.4 sec Predicted Magnitude Drop: 0.8 mag