ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2021/09/09 STAR: UCAC4 387-002446 ASTEROID: (5254) Ulysses 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 33.2 (WGS84) Altitude: 211 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 - 02:47:50 - - : E - 02:54:28 - - : 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: 400 ms 7 OBSERVING CONDITIONS: Atmospheric transparency: good Wind: no Temperature: 10 deg C Star image stability: fair Minor planet visible: no 8 ADDITIONAL COMMENTS: Analyzed using Tangra v3.7.3 S/N of occulted star: 6 - 9 Camera temperature: -5 deg C IBEROC feed (2021/07/25): Event time: 02:51:50 UT Error in time: 14 s Max duration: 8.0 s Star magnitude: 13.9 m Asteroid magnitude: 16.3 m Combined magnitude: 13.8 m Magnitude drop: 2.5 m Position: In the 1-sigma zone, 12 km outside the shadow path Probability: 33.2 %