Asteroidal Occultation Reports Database

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Complete Occultation Report plus Physical Data
Occultation Date       : 2010-12-03
Star Designation       : TYC 5154-02052-1
Object Designation     : (895) Helio
Observation Result     : O-
Observation Method     : VIS
Instrument/Optics      : M254
Observer(s)            : Tomas Janik
Country Code           : CZ
Station Longitude      : E  14 00 09
Station Latitude       : N  50 44 00
Station Altitude [m]   : 460
Geodatic Datum         : W
Time Source            : 
Start Observation  UT1 : 16:44:26
End Observation    UT4 : 16:46:27
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]  : 9.396
Observed Amplitude mag : 0.11-0.23
Estimated (a/b) ratio  : 1.11-1.24
Light Curve Quality    : 3
Light Curve Note       : 
Ref.: Harris / Warner
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Diam.[km]  Max/Min/Code: 141.9 /  / 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.