Asteroidal Occultation Reports Database

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Complete Occultation Report plus Physical Data
Occultation Date       : 2009-09-24
Star Designation       : 2UCAC 41491912
Object Designation     : (81) Terpsichore
Observation Result     : O?
Observation Method     : VIS
Instrument/Optics      : M305
Observer(s)            : Henk Bulder
Country Code           : NL
Station Longitude      : E  06 52 44.3
Station Latitude       : N  52 56 17.8
Station Altitude [m]   : 8
Geodatic Datum         : W
Time Source            : RAD
Start Observation  UT1 : 02:18:00
End Observation    UT4 : 02:23:30
Disappearance      UT2 : 02:21:12 +- 1.5
Reappearance       UT3 : 02:21:24 +- 1
Duration [sec]         : 0.5  12.00
Reaction Time UT2 (VIS): 1
Reaction Time UT3 (VIS): 1
Reaction time applied  : A
Comment                : Uncertain & poorly timed event. First declared as negative.
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LIGHTCURVE DATA        |
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Rotational Period [h]  : 11.02
Observed Amplitude mag : 0.10
Estimated (a/b) ratio  : 1.10 
Light Curve Quality    : 2
Light Curve Note       : 
Ref.: Harris / Warner
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Diam.[km]  Max/Min/Code: 119.1 /  / 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.