ASTEROIDAL OCCULTATION - REPORT FORM


EAON & IOTA/ES 

1. DATE: 2022 Apr 23  STAR:  UCAC4 475-048307  ASTEROID: (11918) 1992 UD2

2. OBSERVER: 

   Name: Marcin Filipek  Abbr: FIM 
   Adress: 32-048 Jerzmanowice, Poland
   Phone: +48 502 084 115
  
3. OBSERVING STATION: Jerzmanowice

   Nearest city: Krakow, Poland
   Station: Latitude: 50° 12 43.8 N 
   Longitude: 19° 45 02.8 E 
   Altitude: 450 m
   WGS84, GPS meas  

4. TIMING OF EVENTS OCCULTATION RECORDED : N E G A T I V E

Type of event: 

(S)tart observation (I)nterrupt start (D)isappearance (B)link (F)lash
(E)nd observation (J)nterrupt end (R)eappearance (O)ther (specify)


Event Time (UTC) P. E. Accuracy
code (HH MM SS.ss) S.ss SS.ss

S 22 00 30         

E 22 02 30

  
5. TELESCOPE 

   Type: Newton   
   Aperture: 400 mm 
   Focal length: 1800 mm
   Mount: Azimutal, Sky-Watcher 
   Motor drive: Yes

6. TIMING & RECORDING

   Time source: SNTP (NetTime) and GPS-inserter
        Sensor: ZWO ASI 178MC
        Recording:  exposure 100 ms  
        Recording device: tablet Microsoft, SharpCap 4.0 (Windows10)
        Time  insertion: tablet clock corrected GPS-inserter


7. OBSERVING CONDITIONS

   Atmospheric transparency: good   
   Wind: no
   Star image stability: good
   Temperature: 8 deg Celsius
   Minor planet visible: no
   Event in altitude: 38° 


8. OBSERVATION QUALITY: good


9. ADDITIONAL COMMENTS:
   
  Constellation: Leo 	
  Distance from center line: 15 km
  Event probability at site : 6.5 %
  Star magnitude: 13.0
  Asteroid magnitude: 19.2
  Predicted mag.drop: 5.9