ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2019 Dec 12, 20:15 (UTC) STAR: UCAC4 654-040644 mv: 14.0 mag ASTEROID: (35464) 1998 DC33 mv: 18.5 mag (diam. 6.6 km) delta-magnitude: mv: 4.5 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: N 47 31 10.4 (WGS84) Longitude: E 08 34 14.3 (WGS84) Altitude: 550 m (MSL) (WGS84) Predicted observation: yes (located OUTSIDE of predicted shadow path, 36 km SE to C.L.) Probability: 3% Single station: 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 20 14 30.239 +/- 0.001 s : Start observation (UTC) D - : Disappearance (UTC) R - : Reappearance (UTC) E 20 16 00.281 +/- 0.001 s : End observation (UTC) Duration: - : (predicted: max. 0.6s) P 20 15 13 +/- 6.00 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: Accurancy 1m Camera/Sensor: Digital Camera with integrated GPS-VTI (Prototype v2b, #8) IMX174LLJ, Pixel size 5.86my, QE ~77% @ 530nm Website of the project: https://groups.io/g/d-vti-cam/ Settings: 640x400, 3x Binning, Exposure time 200ms (5 fps), Gain +10dB, Format SER 16 Bit no Dark Frame substracted Time insertion: within Camera, visual and digital timestamp 7 OBSERVING CONDITIONS: Atmospheric transp.: fair, clouds at the end Moon: 100% @ 19° distance Wind: yes Star image stability: fair Altitude of star: 47° Azimut of star: 76° in Auriga 8 ADDITIONAL COMMENTS: Feed: IBEROC Video recording software: DvtiCamControl v4.4.2 Light measurement tool: Tangra v3.6.19 Remarks: - Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)