Asteroidal Occultation Reports Database

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Complete Occultation Report plus Physical Data
Occultation Date       : 2010-12-31
Star Designation       : TYC 1889-00106-1
Object Designation     : (257) Silesia
Observation Result     : O-
Observation Method     : VID
Instrument/Optics      : M200
Observer(s)            : Stefano Sposetti
Country Code           : CH
Station Longitude      : E  09 01 26.5
Station Latitude       : N  46 13 53.2
Station Altitude [m]   : 260
Geodatic Datum         : 
Time Source            : 
Start Observation  UT1 : 03:41:12
End Observation    UT4 : 03:53:00
Disappearance      UT2 :  
Reappearance       UT3 :  
Duration [sec]         :  
Reaction Time UT2 (VIS): 
Reaction Time UT3 (VIS): 
Reaction time applied  : 
Comment                : 
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LIGHTCURVE DATA        |
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Rotational Period [h]  : 15.7059
Observed Amplitude mag : 0.31
Estimated (a/b) ratio  : 1.33 
Light Curve Quality    : 3
Light Curve Note       : 
Ref.: Harris / Warner
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Diam.[km]  Max/Min/Code: 72.7 /  / 2
Ref.: D.Herald (Occult)
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More Data and Informations
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Notes
  • For the used data sources and all abbrerviations / codes used above look here & come back with browser's back button
  • The axis ratio (a/b) is estimated by : (a/b) >= 10**(0.4*(Observed Amplitude)).
  • Reaction time is applicable just for visual observations. 'A' means that RT was applied to the timings.
  • Duration is from observation report. If the value UT3-UT2 differs from that it is also given in red color.