ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE (YYYY/MM/DD): 2022/03/11 STAR: UCAC4 445-033109 ASTEROID: Ohio N°: 439 2 OBSERVERS: Name: Marcin Filipek PTMA SOPiZ E-mail: marfil@wp.pl Address: 3 OBSERVING STATION: Nearest city: Kraków Station: Jerzmanowice Longitude (DD MM SS.s): E 19 45 02.8 (WGS84) Latitude (DD MM SS.s): N 50 12 43.9 (WGS84) Altitude (m): 450 m (WGS84) Single|Multiple station: Single +----------------------------+ 4 TIMING OF EVENTS: | | | EVENT REPORTED: POSITIVE | | | +----------------------------+ 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) Comments Event Time (UT) P.E. Acc. Code HH:MM:SS.ss S.ss S.ss S - 19:35:30.00 D - 19:36:52.60 +/- 0.05 s R - 23:36:56.45 +/- 0.05 s E - 19:38:00.00 Duration : 3.85 s +/- 0.1 s Mid-event : 54.525 s +/- 0.05 s 5 TELESCOPE: Type: Newton Aperture: 250 mm Focal length: 1000 mm Mount: Equatorial Motor drive: Yes Filter: 6 TIMING & RECORDING: Time source: SNTP , NetTime 3.20 Alpha3 Sensor: ASI178MC Recording: 100 ms (exposure 0.1 s) Recording device: laptop , SharpCap 3.2 (Windows10) Time insertion: time laptop corrected flashing LED GPS-inserter 7 OBSERVING CONDITIONS: Atmospheric transparency: good Wind: no Temperature: -4 °C Star image stability: good Minor planet visible: no Event in altitude: 38° 8 ADDITIONAL COMMENTS: Constellation: Monoceros Distance from center line: 28 km Event probability at site : 65.7 % Star magnitude: 11.5 Asteroid magnitude: 15.0 Predicted mag.drop: 3.5