ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2022 Jul 02, 21:52 (UTC) STAR: UCAC4 357-178458 mv: 12.7 mag ASTEROID: (83971) 2002 AU25 mv: 17.1 mag (diam. 5.0 km) combined magnitude: mv: 12.7 mag delta-magnitude: mv: 4.4 mag 2 OBSERVER: Name: Peter Englmaier E-mail: peter@englmaier.ch Address: Furttalstrasse 97, 8046 Zurich, Switzerland 3 OBSERVING STATION: Nearest city: Zurich Station: Private Observatory Latitude: N47 25' 21.144" (WGS84) Longitude: E08 29' 42.932" (WGS84) Altitude: 467 m (MSL) (WGS84) Predicted observation: no (Distance 111.6 km from C.L.) Probability: 0.8 percent Single station: yes +----------------------------------+ 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 21 52 18.407 +/- 0.001 s : Start observation (UTC) E 21 53 18.537 +/- 0.001 s : End observation (UTC) P 21 52 48.999 +/- 5.622 s : Predicted time (UTC) 5 TELESCOPE: Type: RC Aperture: 405 mm Focal length: 3240 mm Magnification: f/8 Mount: 10 Micron GM 3000 HPS Motor drive: Yes 6 TIMING & RECORDING: Time source: GPS Quality of signal: Accuracy 3 m Camera/Sensor: Digital Camera with integrated GPS-VTI (DVTI CAM Prototype V3, serial #25) Image Sensor Sony IMX174LLJ-C (1/1.2" 1920x1200 5.86um CIS) Website of the project: https://groups.io/g/d-vti-cam/ Settings: 480x300, Exposure time 100 ms, Gain +24 dB, Binning 4x4, Format ADV 16-bit Time insertion: Digital GNSS timestamp into image sensor data stream 7 OBSERVING CONDITIONS: Atmospheric transp.: good Moon: 13 percent lit, distance 144 deg Wind: no wind Star image stability: poor Altitude of star: 18 deg Azimut of star: 148 deg in Sagittarius 8 ADDITIONAL COMMENTS: Feed: Community Tags Video recording software: DVTI Cam Control v5.0.1-0 Light measurement tool: Remarks: Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)