ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2021/03/12 STAR: UCAC4 550-018423 ASTEROID: Uedayukika No: 34123 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 - 21:59:19 - - : E - 22:04:14 - - : 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 Sensor: ZWO ASI174MM-C Recording: ZWO ASICAP V2.3 Exposure: 300 ms 7 OBSERVING CONDITIONS: Atmospheric transparency: good Wind: none Temperature: -2 deg C Star image stability: good Minor planet visible: no 8 ADDITIONAL COMMENTS: Analyzed using Tangra v3.6.17 S/N of occulted star: 4 - 6 Camera temperature: -30 deg C UKOCL feed (2021/02/14): Event time: 22:01:27 UT Error in time: 5 s Max duration: 0.9 s Star magnitude: 13.9 m Asteroid magnitude: 19.7 m Combined magnitude: 13.9 m Magnitude drop: 5.8 m Position: In the shadow, <1 km outside the central line Probability: 7.9 %