ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2021 Dec 13, 18:52 (UTC) STAR: UCAC4 591-031393 mv: 13.6 mag ASTEROID: (195701) 2002 PH28 mv: 19.2 mag (diam. 7.0 km) combined magnitude: mv: 13.6 mag delta-magnitude: mv: 5.6 mag 2 OBSERVER: Name: Stefan Meister E-mail: meister@dolphins.ch Address: Sandgruebstr. 9, CH-8193 Eglisau, Switzerland 3 OBSERVING STATION: Nearest city: Buelach, Switzerland Station: Observatory Buelach (MPC Observatory Code: 167) http://www.sternwartebuelach.ch/ Latitude: N47 31' 10.402" (WGS84) Longitude: E08 34' 14.300" (WGS84) Altitude: 550 m (MSL) (WGS84) Single station: yes Predicted observation: yes (Distance 0.0 km from C.L.) Probability: 5.1 percent +----------------------------------+ 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 18 51 45.568 +/- 0.001 s : Start observation (UTC) D +/- s : Disappearance (UTC) R +/- s : Reappearance (UTC) E 18 52 25.790 +/- 0.001 s : End observation (UTC) Duration: +/- s : (predicted: max. 0.6 s) P 18 52 05.732 +/- 5.649 s : Predicted time (UTC) 5 TELESCOPE: Type: Newton Reflector f/5 Aperture: 500 mm Focal length: 2500 mm Magnification: focal (resulting field of view: 15.5' in x-axis) Mount: equatorial Motor drive: yes 6 TIMING & RECORDING: Time source: GPS Quality of signal: Accuracy 1 m Camera/Sensor: Digital Camera with integrated GPS-VTI (DVTI CAM Prototype V3, serial #15) Image Sensor Sony IMX174LLJ-C (1/1.2" 1920x1200 5.86um CIS) Website of the project: https://groups.io/g/d-vti-cam/ Settings: 640x400, Exposure time 200 ms, Gain +24 dB, Binning 3x3, Format ADV 16-bit with Dark Frame and correction algorithm "Fixed pattern noise red." applied Time insertion: Digital GNSS timestamp into image sensor data stream 7 OBSERVING CONDITIONS: Atmospheric transp.: poor Moon: 76 percent lit, distance 72 deg Wind: no Star image stability: poor Altitude of star: 25 deg Azimut of star: 75 deg in Auriga 8 ADDITIONAL COMMENTS: Feed: IBEROC Events Video recording software: DVTI Cam Control v5.0.0-0 Light measurement tool: PyMovie v3.2.7 Remarks: Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)