+--------------------------------+ +--------------------------------+ ASTEROIDAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1. DATE: 28 Aug 2021 STAR: UCAC4 573-032880 ASTEROID: (1032) Pafuri 2. OBSERVER Name: Stefano SPOSETTI Address: 6525 GNOSCA - Switzerland Email: stefanosposetti@ticino.com 3. OBSERVING STATION Nearest city: CH-6525 Gnosca Station: 143 (MPC-code) Longitude (DD MM SS.s): 09 01 26.5 (E) Latitude (DD MM SS.s): 46 13 53.2 (N) Altitude: 260 m (WGS84) 4. TIMING OF EVENTS Occultation recorded: POSITIVE Type of event: "S"tart observation; "I"nterrupt-start; "D"isappearance; "B"link; "F"lash; "E"nd observation; "I"nterrupt-end; "R"eappearance; "O"ther (specify) Personal Equation Substracted: - Event Time (UTC) Accuracy + Comments code: HH:MM:SS.ss S.sss -S : 03:16:30 -D : 03:19:25.38 ± 0.02 s -R : 03:19:26.56 ± 0.02 s -E : 03:19:53 Duration: 1.18 ± 0.04 s 5. TELESCOPE -Type: Newton -Aperture: 420 mm -Focal length: 1640 mm -Mount: Equatorial -Motor drive: Yes 6. TIMING & RECORDING -Camera/Sensor: Videocamera QHY174M-GPS, SONY IMX174 CMOS sensor -Device of recording: personal computer, USB3 input, SharpCap PRO v. 3.2.6173.0 software, saved on SSD as SER file -binning = 2x2, sensor uncooled, camera bit depth = MONO16, area size in pixel = 960x600, USB traffic = 5, setted exposure = 30 ms, gain = 480, offset = 0, contrast = 0, brightness = 0, gamma = 1, banding suppression = 0, banding threshold = 35, apply flat = none, subtract dark = none -Timekeeping: GPS UTC clock -Integration time: 0.030 s 7. OBSERVING CONDITIONS -Atmospheric transparency: fair -Wind: no -Star image stability: fair -Minor Planet visible during the occultation: no 8. ADDITIONAL COMMENTS Prediction: -Occultwatcher, IBEROC feed -Rank: 100 -Probability: 100.0 % -Combined magnitude: 11.0 mag -Star magnitude: 11.0 mag V; 10.6 mag R -Asteroid magnitude: 16.7 mag -Lightdrop: 5.7 mag; 5.7 mag R -Max duration: 1.9 s -Event time: 03:19:26 UT -Error in time: 1 s -Moon distance: 58 deg -Moon illumination: 70 % Other comments: -Target sky position: elevation = 34 deg, azimut = 88 deg -Tangra v. 3.7.3 was used to generate the lightcurve (aperture photometry, median background). Time reference: Start Frame -D and R times were evaluated using AOTA v4.10.5.0, applied confidence level: D = 90 %, R = 90 % -SN at event locations: D: 13.3; R: 10.2 Ave: 11.8 -During the event the starlight dropped to zero -Measured mid-event time: 03:19:25.97 UT -The lightcurve can be seen here: http://sposetti.ch/wp-content/uploads/2021/08/2021_08_28_Pafuri_Gnosca.png