ASTEROIDAL OCCULTATION - REPORT FORM


EAON & IOTA/ES 

1. DATE: 2021 Feb 14  STAR: TYC 2491-01520-1  ASTEROID: (33074) 1997 WP21 	

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 43.7 N 
   Longitude: 19° 45 02.6 E 
   Altitude: 449 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 19 14 25         

E 19 17 00

  
5. TELESCOPE 

   Type: Newton   
   Aperture: 250 mm 
   Focal length: 1000 mm
   Mount: Equatorial, Sky-Watcher EQ6
   Motor drive: Yes

6. TIMING & RECORDING

   Timekeeping: GPS Inserter SE OSD TomaszTech    
   Sensor: Camera Samsung DCC-581F
   Recording: Hard disc on a PC


7. OBSERVING CONDITIONS

   Atmospheric transparency: good   
   Wind: slight
   Star image stability: good
   Temperature: -7 deg Celsius
   Minor planet visible: no
   Event in altitude: 58°

 


8. OBSERVATION QUALITY: good


9. ADDITIONAL COMMENTS:
   
  Camera settings: 
  Integration 0.12 s
  AGC: low
  Evaluation in Tangra
  Constellation : Lynx	
  Distance from center line: 12 km
  Event probability at site : 10.5 %
  Star magnitude: 12.1
  Asteroid magnitude: 16.7
  Predicted mag.drop: 4.6