ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2021/12/28 STAR: HIP 533 ASTEROID: (532) Herculina 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 - 17:57:37 - - : E - 18:03:15 - - : 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: "chrony", 4 x NTP Stratum 1, Linux Ubuntu Sensor: ZWO ASI174MM-C Recording: ZWO ASICAP V2.3 Exposure: 11 ms 7 OBSERVING CONDITIONS: Atmospheric transparency: fair - poor Wind: weak Temperature: -3 deg C Star image stability: poor Minor planet visible: no 8 ADDITIONAL COMMENTS: Analyzed using PyMovie 3.2.9 Observation made due to potential existence of Herculina's moon ITALOccult feed (2021/10/31): Event time: 18:00:42 UT Error in time: 2 s Max duration: 7.8 s Star magnitude: 8.9 m Asteroid magnitude: 11.8 m Combined magnitude: 8.8 m Magnitude drop: 3.0 m Star altitude: 20 deg Position: 333 km outside the 1-sigma zone Probability: 0.0 %