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OCCULTATION OF UCAC2 14430598 BY 10199 Charilko
2011 June 29


This event which crossed both NZ and much of Australia attracted 11 observers by about 2 weeks before the due time.
John Talbot decided to ask for more obserevrs to try to fill gaps in the "fence".
In the final analysis 25 stations had either registered on Occult Watcher or later reported. Thank you team for putting your hands up. Sadly, that night proved to be largely clouded out on both sides of the Tasman, but five clearly observed misses were recorded for this event.

View the updated prediction.

Observers:
Observed Misses in plot below:
  1(M) D Herald,Murrumbateman, NSW,AU
  2(M) S Kerr,Rockhampton, QLD,AU
  3(M) J Broughton,Reedy Creek, QLD, AU
  4(M) D Watson,Thornton near Whakatane, NZ
  5(M) I Curtis & Tina Curtis,Adelaide, SA, AU
  6(P) Prediction, 8 Jan

Clouded Out or other problems:
    Jonathan Bradshaw, Samford,QLD,AU
    Brian Loader, Darfield,SI,NZ
    Stuart Parker, Oxford,SI,NZ
    John Drummond, Gisborne,NI,NZ
    Andrew Walker, Tauranga,NI,NZ
    Gordon Hudson, Titahi Bay,NI,NZ
    Chris Wyatt, Walcha,NSW,AU
    Paul Tervit, Marton,NI,NZ
    John Talbot, Waikanae Beach,NI,NZ
    Terry Butt, Te Horo,NI,NZ
    Peter Graham, Martinborough,NI,NZ
    Dave Gault, Hawkesbury Hights,NSW,AU
    Hristo Pavlov, St Clair,NSW,AU
    Steve Russell, Rosehill,NSW,AU
    Peter Jaquiery, Dunedin,SI,NZ
    Roland Idaczyk, Wellington,NI,NZ
    Graham Blow, Wellington,NI,NZ
    Peter Nelson, Ellinbank,VIC,AU
    Chris Chad, Hobart,TAS,AU
    Peter Anderson, Brisbane, QLD,AU

    

Charilko occultation - 2011 June 29

Discussion:

The circle above is plotted at the expected 258 km diameter of Charilko. With no positive chords we cannot say where the actual path was, so the circle has been plotted on the predicted path.

Observational Data:

Observation details for MP (10199) Chariklo
By Star              UCA 2U14430598
On 2011-06-29  at 10:04:14.0

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW,AU
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   35 cm
Seeing     Steady Thin cloud < 2
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.5

_______________________________

Observer   S. Kerr
Location   Rockhampton, QLD,AU
Longitude  +150:30
Latitude   -23:16
Altitude   50 m
Datum      Other
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Slight flickering Clear
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Very late start (10:04:45 UTC) due to cloud.
Camera integration at 160ms.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.4

_______________________________

Observer   John Broughton
Location   Reedy Creek, QLD, AU
Longitude  +153:23
Latitude   -28:06
Altitude   66 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Steady Broken cloud
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: The star couldn't be seen through cloud during the following periods.
10:03:06-10:03:40  10:03:50-10:03:55  10:03:58-10:04:07  10:05:54-10:07:40
10:09:45-10:11:37  10:11:47-10:12:01  10:13:09-10:13:12

_______________________________

Observer   Diana Watson
Location   Thornton near Whakatane, NZ
Longitude  +176:51
Latitude   -37:55
Altitude   3 m
Datum      Other
Telescope SCT including Cass and Mak
Aperture  200 cm
Seeing     Steady Clear
Camera Type
Camera Delay
Timing     Tape Recorder + time signal Visual, no PE applied

Missed

Comments:

_______________________________

Observer   Ivan Curtis & Tina Curtis
Location   Adelaide, SA, AU
Longitude  +138:37
Latitude   -34:53
Altitude   44 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   28 cm
Seeing     Steady Thin cloud < 2
Camera Type
Camera Delay
Timing     other Video, photo or photoelectric

Missed

Comments: We observed with a CCD camera at 1 frame/s.
A total of 1802 frames were aligned and aperture photometry performed.
Differential photometry relative to a reference star with a check star was analysed.
No change in brightness > 0.2 Mag was seen.

    

Return to 2011 occultation results



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