ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2019 April 22, 01:20 (UTC) STAR: UCAC4-376-077172 mv: 12.4 mag ASTEROID: (145) Adeona mv: 12.5 mag (diam. 128 km) combined magnitude: mv: 11.7 mag delta-magnitude: mv: 0.8 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 INSIDE of predicted shadow path, 74km south of C.L.) Single station: Stefan MEISTER +----------------------------------+ 4 TIMING OF EVENT: | | | OCCULTATION RECORDED: POSITIVE | | | +----------------------------------+ 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 01 20 05.146 +/- 0.01 s : Start observation (UTC) D 01 20 37.398 +/- 0.12 s : Disappearance (UTC) R 01 20 53.384 +/- 0.12 s : Reappearance (UTC) E 01 21 33.692 +/- 0.01 s : End observation (UTC) Duration: 15.986 s : (predicted: max. 17.8s) M 01 20 45.391 +/- 0.12 s : Mid-event (UTC) P 01 20 46 +/- 4s : 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 2m Camera/Sensor: Digital Camera with integrated GPS-VTI (Prototype) AR0130CSSM, Pixel size 3.75my, QE 77% Settings: 424x318, 3x Binning, Exposure time 62ms (16.1 fps), Gain 10, Output format SER Time insertion: within Camera, visual timestamp 7 OBSERVING CONDITIONS: Atmospheric transp.: very poor (Cirrus) Moon: yes, distance only 5 degrees Wind: no Star image stability: fair Altitude of star: 27 degrees, S Minor planet visible: yes 8 ADDITIONAL COMMENTS: Feed: IOTA 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)