+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2013/10/05 STAR: 4UC 622-030951 ASTEROID: (3902) Yoritomo 2.OBSERVER: Name: Gerhard Dangl Phone: ++43-(0)2842-53908 Address: AUSTRIA, A-3830, Nonndorf 12 E-mail: gerhard@dangl.at 3.OBSERVING STATION: Nearest city: Waidhofen an der Thaya Latitude: N 48 47 13.5 (WGS84) Longitude: E 15 14 08.3 (WGS84) Altitude: 607m (WGS84) Single/Multiple: Single +--------------------------------------------------------------------+ 4.TIMING OF EVENTS: Occultation recorded: NEGATIVE Type of event: "S"tart observation; "I"nterrupt-"s"tart; "D"isappearance; "B"link; "F"lash; "E"nd observation; "I"nterrupt-"e"nd; "R"eappearance; "O"ther (specify) Personal Equation Substracted: No Event Time (UT) P.E. Accuracy + Comments code: HH:MM:SS.ss S.ss S.ss S: 00:07:51 E: 00:11:02 5.TELESCOPE: Type: Newton Focal length: 1200mm Aperture: 254 mm Magnification: video/primary focus/FOV 18.3'x13.7' (768x576, 1.43"x1.43" per pixel) Mount: Equatorial Motor drive: Yes 6.TIMING & RECORDING: Timekeeping: GPS 1PPS, GlobalSat EM-406A GPS Board + IOTA-VTI (Demo3) V1.1.43 Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL Mode of recording: It=160ms (6.25 Img/s), Video CCIR, Y800, uncompressed AVI Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (Y800), Notebook Harddisk Time insertion: IOTA-VTI 7.OBSERVING CONDITIONS: Atmospheric transparency: fair Wind: no Star image stability: fair Minor planet visible: no Temperature: 280 Kelvin (+07 deg Celsius) 8.ADDITIONAL COMMENTS: Target star 4UC 622-030951, +12.9mag, 43deg Elevation. Only Clear glass filter (Astronomik) for CCD protection was used. Video evaluation accomplished with VirtualDub 1.10.0, Tangra v1.4.0.497 Event data details according to the predictions from EAON. Predicted event time was 00:09:26 UTC for my observing position. Predicted maximum duration was 3.1 seconds with a 4.5mag drop. Position was 36km from predicted central line in SE direction between path edge and 1-sigma line with a probability of 6.4%. No occultation event detected (It=160ms). 3-D Position and timing GlobalSat EM-406A GPS Board Receiving 08 satellites Horizontal Dilution of Precision 1.2 Geoidal separation 44.6m (Altitude 562.5MSL + 44.6 = 607.1 m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+