ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2020 Sep 13, 19:44 (UTC) STAR: HIP 5511 mv: 8.3 mag ASTEROID: (13235) Isiguroyuki mv: 17.4 mag (diam. 5.0 km) combined magnitude: mv: 8.3 mag delta-magnitude: mv: 9.1 mag 2 OBSERVER: Name: Andreas SCHWEIZER E-mail: aschweiz@mac.com Address: Strumbergächerstr. 3A, 8907 Wettswil, Switzerland 3 OBSERVING STATION: Nearest city: Bülach Station: Sternwarte Bülach Latitude: N47 31' 10.402" (WGS84) Longitude: E08 34' 14.300" (WGS84) Altitude: 550 m (MSL) (WGS84) Predicted observation: yes (Distance 2.0 km from C.L.) Probability: 6.6 percent Single station: Sternwarte Bülach +----------------------------------+ 4 TIMING OF EVENT: | | | OCCULTATION RECORDED: NEGATIVE | | | +----------------------------------+ Type of event: S = Start observation I = Interrupt-start D = Disappearance B = Blink F = Flash E = End observation I = Interrupt-end R = Reappearance M = Mid-event P = Predicted time Event Time (UTC) Acc. Comments Code HH MM SS.sss S.sss S 19 43 52.382 +/- 0.001 s : Start observation (UTC) D +/- s : Disappearance (UTC) R +/- s : Reappearance (UTC) E 19 44 52.711 +/- 0.001 s : End observation (UTC) Duration: +/- s : (predicted: max. 0.8 s) P 19 44 26.271 +/- 4.579 s : Predicted time (UTC) 5 TELESCOPE: Type: Cassegrain Aperture: 850 mm Focal length: 7600 mm Mount: Equatorial Motor drive: yes 6 TIMING & RECORDING: Time source: GPS Quality of signal: Accuracy 7m Camera/Sensor: Digital Camera with integrated GPS-VTI (V3, serial #12) IMX174LLJ, Pixel size 5.86my, QE ~77% @ 530nm Website of the project: https://groups.io/g/d-vti-cam/ Settings: 640x400, Exposure time 33 ms, Gain +24 dB, Binning 3x3, Format ADV 16-bit Time insertion: Digital GNSS timestamp into image sensor data stream 7 OBSERVING CONDITIONS: Atmospheric transp.: Moon: below horizon Wind: no Star image stability: fair Altitude of star: 11 deg Azimut of star: 92 deg in Pisces 8 ADDITIONAL COMMENTS: Feed: ITALOccult Video recording software: DVTI Cam Control v4.10.2 Light measurement tool: Tangra v3.7 Remarks: Our 50cm Newton telescope was out of order, so I've recorded this occultation with the 85cm Cassegrain telescope. Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)