ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2020 Oct 27, 19:10 (UTC) STAR: UCAC4 362-198187 mv: 12.8 mag ASTEROID: (13622) McArthur mv: 19.8 mag (diam. 10.0 km) combined magnitude: mv: 12.8 mag delta-magnitude: mv: 7.0 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 1.3 km from C.L.) Probability: 7.1 percent Single station: Andreas SCHWEIZER and Stefan MEISTER +----------------------------------+ 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 08 37.934 +/- 0.001 s : Start observation (UTC) D +/- s : Disappearance (UTC) R +/- s : Reappearance (UTC) E 19 11 39.466 +/- 0.001 s : End observation (UTC) Duration: SS.sss +/- s : (predicted: max. 1.1 s) P 19 10 07.875 +/- 6.268 s : Predicted time (UTC) 5 TELESCOPE: Type: Newton Aperture: 500 mm Focal length: 2500 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 (Prototype V3, serial #12) IMX174LLJ, Pixel size 5.86my, QE ~77% @ 530nm Website of the project: https://groups.io/g/d-vti-cam/ Settings: 960x600, Exposure time 50 ms, Gain +16 dB , Binning 2x2, Format ADV 16-bit Time insertion: Digital GNSS timestamp into image sensor data stream 7 OBSERVING CONDITIONS: Atmospheric transp.: good Moon: 87 percent lit, distance 38 deg Wind: some Star image stability: good Altitude of star: 24 deg Azimut of star: 194 deg in Capricornus 8 ADDITIONAL COMMENTS: Feed: Planned Observations Video recording software: DVTI Cam Control v4.10.3 Light measurement tool: PyMovie + PyOTE Remarks: Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)