MINOR PLANET OCCULTATION TEXT REPORT FORM                V1.0c
       (View this form in a non-proportional font - e.g. Courier 10pt)

Occultation Recorded                  : Positive
   (Positive or Negative)

Planet (Number Name) for MPs          : 106 Dione
Star Name (Catalog number)            : UCAC2 21161679
 Eg. (TYC xxxx-xxxxx-x)
     (HIP xxxxx)
     (UCAC2 xxxxxxxx) 
Was this a Second Star ?  (Y or N)    : N

Date (U.T.C.) (yyyy-mmm-dd)           : 2008-Jun-03 
Predicted Time (U.T.C.)  (hh:mm:ss)   : 19:23:00

Observer's Name                       : John Broughton
Telephone (include city code)         : 617 5522 1119
Postal Address                        : 18 Branch Crescent,
Address cont.(City/Town,State,Country): Reedy Creek, QLD 4227, Australia
E-mail Address                  Mailto: reedycrk@bigpond.com

Observing site name                   : 428 Reedy Creek
Longitude (DD MM SS.S)  East +ve      : +153 23 52.8
Latitude (DD MM SS.S)   South -ve     : -28 06 30.3
Height above Sealevel (xxx m or ft)   : 66 m
Geodetic Datum (e.g.WGS84,NZ1949)     : WGS84 
   GPS produces WGS84
Height Datum (if known)               : 

TELESCOPE DETAILS:
Aperture (xxx cm or xxx in)           : 025 cm
Focal length (xxx cm or xxx in)       : 169 cm
Magnification (blank if using VidCam) : 
Type Instrument (one of below)        : SCT
   Newtonian
   SCT including Cass and Mak
   Refractor
   Dobsonian
   Binoculars
   no optical aid
   other - specify below

CONDITIONS:
Sky Transparency (One of below)       : Clear
   Clear
   Fog
   Thin cloud < 2
   Thick cloud > 2
   Broken cloud
   Star faint
   Averted vision
Star Image Stability (One of below)   : Steady
   Steady
   Slight flickering
   Strong flickering
Other Conditions                      : 
   (Wind, Clouds, Lights, etc.)
Temperature (xx C or xx F)            : 15 C 

TIMINGS:  (Please report in Universal Time UTC)
Time Source                           : Tape Recorder + time signal + shutter
   GPS - time inserted
   GPS - other linking
   Video + audio time signal
   Tape Recorder + time signal
   Eye-Ear + time signal
   Stopwatch
   Radio broadcast - calibrated
   Other specify
Recording method                      : Drift scan 
   Visual, PE applied
   Visual, standard PE applied
   Visual, no PE applied
   Video with frame analysis
   Video, photo or photoelectric
   Only duration timed
   Drift scan
   Preliminary only
Could you see the Asteroid? (Y or N)  : N 
Approx. Limiting Magnitude            : 13.5

OBSERVATION TIMES:
                           Universal Time|Reaction PE|Accuracy|Remarks
     FORMAT TO USE-->      : hh:mm:ss.sss |ss.ss |s.ss|text
Started Observing          : 19:22:30.24  |  0   |  0.01|
Star and Object Merged     : 
Disappearance At           : 19:23:04.46  |  0   |  0.11 |

Was this a Miss ? (Y or N) : N 
Estimated Closest Approach : 
  if Miss and could see MP.

Reappearance At            : 19:23:05.57 |   0   |  0.11|
Star and Object Separated  : 
Stopped Observing          : 19:23:30.72  |  0  |   0.01 |
   Please provide Reaction and Accuracy estimates for D and R.
   Not required for other lines.  Start and Stop times are useful if observation 
   is continuous to note when possible moons might have been seen.
Was your reaction time (also known as Personal Equation) subtracted from 
any of the above timings?  (Y or N)   : 
If YES, state value                   : 
If you could tell, in which direction did the asteroid pass relative to 
the star                              : 
   North, South, East, Or West
If possible, estimate the DISTANCE OF CLOSEST APPROACH 
in arc seconds                        : 

List all Interruptions to Observing:
               FROM          TO       REASON
           (  hh:mm:ss - hh:mm:ss     _____________________)
    Break 1: 
    Break 2: 

ADDITIONAL COMMENTS: (free text)
: A clearly positive result from a magnitude 12.5 occultation.
: The measured duration of 1.11 is remarkably short (9%) compared with the
: maximum duration of 12 seconds. Supporting a grazing occultation scenario
: where the star passed within 1km of the edge of Dione is the fact
: that the event occurred only 5 seconds later than prediction.
: On the other hand, if the occultation was caused by a Dione satellite,
: then the best guess for its diameter is 17km, which represents a body
: 27% longer than the length of this random chord.
: I should also mention that the apparent second gap in the trail
: on the right is actually the end of the trail and beginning of another.    
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