Asteroidal Occultation Reports Database

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Complete Occultation Report plus Physical Data
Occultation Date       : 1998-03-21
Star Designation       : HIP 28954
Object Designation     : (39) Laetitia
Observation Result     : O+
Observation Method     : VIS
Instrument/Optics      : M200
Observer(s)            : Alberto Dalle Donne
Country Code           : IT
Station Longitude      : E  11 13 14
Station Latitude       : N  44 26 40
Station Altitude [m]   : 337
Geodatic Datum         : 
Time Source            : 0.3
Start Observation  UT1 : 18:58:00
End Observation    UT4 : 19:04:00
Disappearance      UT2 : 11.3 +- 19:01:50.7
Reappearance       UT3 : 0.3 +- 19:02:02.0
Duration [sec]         :  
Reaction Time UT2 (VIS): RAD
Reaction Time UT3 (VIS): 0.3
Reaction time applied  : 0.3
Comment                : A
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LIGHTCURVE DATA        |
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Rotational Period [h]  : 5.138
Observed Amplitude mag : 0.08-0.53
Estimated (a/b) ratio  : 1.08-1.63
Light Curve Quality    : 4
Light Curve Note       : 
Ref.: Harris / Warner
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Diam.[km]  Max/Min/Code: 216.0 / 147.0 / 7
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.