ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2019 Jul 24, 22:18 (UTC) STAR: UCAC4 371-121678 mv: 14.3 mag ASTEROID: (39294) 2001 DB33 mv: 18.3 mag (diam. 19.2 km) delta-magnitude: mv: 4.0 mag 2 OBSERVER: Name: Stefan MEISTER and Andreas SCHWEIZER 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 INSIDE of predicted shadow path, 8 km NW to C.L.) Single station: Stefan MEISTER and Andreas SCHWEIZER +----------------------------------+ 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 22 18 10.974 +/- 0.01 s : Start observation (UTC) D - : Disappearance (UTC) R - : Reappearance (UTC) E 22 19 14.452 +/- 0.01 s : End observation (UTC) Duration: - s : (predicted: max. 1.6s) P 22 18 42 +/- 8.00 s : Predicted time (UTC) 5 TELESCOPE: Type: Newton Reflector f/5 Aperture: 500 mm Focal length: 2500 mm Magnification: focal (resulting field of view: 6.6' 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 v2) AR0130CSSM, Pixel size 3.75my, QE 77% Website of the project: https://groups.io/g/d-vti-cam/ Settings: 640x480, 2x Binning, Exposure time 500ms (2 fps), Gain 10, Format SER 16 Bit Dark Frame substracted Time insertion: within Camera, visual and digital timestamp 7 OBSERVING CONDITIONS: Atmospheric transp.: poor Moon: no Wind: no Star image stability: fair Altitude of star: 26 degrees, 192° Az Minor planet visible: no 8 ADDITIONAL COMMENTS: Feed: IBEROC Video recording software: DvtiCamControl v4.3.3 Light measurement tool: Tangra v3.6.18 Remarks: - Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)