ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2019 March 26, 19:00 (UTC) STAR: UCAC4 572-047401 mv: 14.4 mag ASTEROID: (33769) 1999 RN112 mv: 17.7 mag (diam. 10 km) combined magnitude: mv: 14.4 mag delta-magnitude: mv: 3.4 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) 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 18 59 58.637 +/- 0.1s : Start observation (UTC) D - : Disappearance (UTC) R - : Reappearance (UTC) E 19 00 59.617 +/- 0.1s : End observation (UTC) Duration: - s : (predicted: max. 1.0s) P 19 00 14 +/- 6 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: NTP/GPS Quality of signal: - Camera/Sensor: Digital Camera with integrated GPS-VTI (Prototype) AR0130CSSM, Pixel size 3.75my, QE 77% Settings: 640x480, 2x Binning, Exposure time 500ms (2 fps), Gain 10, Output format SER Time insertion: within Camera, visual timestamp 7 OBSERVING CONDITIONS: Atmospheric transp.: good, clouds passing by Moon: no Wind: no Star image stability: fair Altitude of star: 49 degrees, East Minor planet visible: no 8 ADDITIONAL COMMENTS: Feed: IBEROC Video recording software: SharpCap 3.2.5958 Light measurement tool: Tangra v3.6 Remarks: - Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)