ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2021/01/31 STAR: UCAC4 668-053746 ASTEROID: 1994 VF2 No: 13614 2 OBSERVER: Name: Daniel BLAZEWICZ Address: 32-015 Klaj, POLAND 3 OBSERVING STATION: Klaj Nearest city: Niepolomice (Poland) Longitude: E 20 19 04.2 (WGS84) Latitude: N 49 59 33.0 (WGS84) Altitude: 210 m (MSL) Single station +----------------------------+ 4 TIMING OF EVENTS: | | | EVENT REPORTED: NEGATIVE | | | +----------------------------+ Event code S: observation Start I: Interruption start D: Disappearance J: Interruption end R: Reappearance B: Blink F: Flash E: observation End O: Other (specify) Abbreviations P.E.: Personal Equation = reaction time (for visual obs) Acc.: Accuracy (overall accuracy of the given time) Comments Event Time (UT) P.E. Acc. Code HH:MM:SS.ss S.ss S.ss S - 17:32:45 - - : E - 17:40:32 - - : 5 TELESCOPE: Type: NEWTON Aperture: 350 mm Magnification: prime focus f/4.8 Mount: EQUATORIAL with polar wedge Motor drive: YES 6 TIMING & RECORDING: Time source: NTP Stratum 1, Linux Ubuntu, synchronization every 32 s Sensor: ZWO ASI174MM-C Recording: ZWO ASICAP V2.3 7 OBSERVING CONDITIONS: Atmospheric transparency: fair Wind: no Temperature: -5 deg C Star image stability: good Minor planet visible: no 8 ADDITIONAL COMMENTS: Exposition time: 100 ms Camera temperature: -20 deg C Analyzed using Tangra v3.6.17 S/N of occulted star: 10 ITALOccult feed (2021/01/15): Event time: 17:35:00 UT Error in time: 7 s Max duration: 1.0 s Star magnitude: 11.5 m Asteroid magnitude: 15.9 m Combined magnitude: 11.5 m Magnitude drop: 4.4 m Position: In the 1-sigma zone, 19 km outside the shadow path Probability: 9.0%