Three chords were recorded for this event.

View the updated prediction.

Observers:
  1(M) D Herald,Breadalbane, NSW,AU
  2    H Pavlov,Canyonleigh, NSW, AU
  3    D Gault,Hawkesbury Heights, NSW,AU
  4    D Gault,Hawkesbury Heights,NSW,AU
  5(P) Prediction, Iota 15 Nov
    

Discussion:

The ellipse above is plotted at the same area as the expected 134 km diameter of Ate. Dave Gault had two telescopes at the same location for testing purposes and it is comforting to see that both recorded essentially the same result. So effectively for reduction we have just 2 chords to slove the shape.

The figures below show the light curves of the occultation.

Hristo Pavlov

Dave Gault

Dave Herald

Observational Data:

Observation details for MP (111) Ate
By Star              TYC 1876-01888-1
On 2009-12-11  at 17:33:17.0
_______________________________

Observer   Dave Herald
Location   Breadalbane, NSW
Longitude  +149:27:43.
Latitude   -34:48:8.
Altitude   724 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.4
_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights
Longitude  +150:38:28.
Latitude   -33:39:52.
Altitude   286 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  17:32:48.90
Reappearance   17:33:02.50
Comments: Target was very low (16 deg Alt) in the north west and twilight
was starting. Co-located with telescope B.   Light curve included with report.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.4

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights
Longitude  +150:38:28.
Latitude   -33:39:52.
Altitude   286 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  17:32:49.10
Reappearance   17:33:03.20
Comments: Aperture of telescope 1/2 obscured by nearby building.
Co-located with telescope A.   Light curve included with report.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.4

_______________________________

Observer   Hristo Pavlov
Location   Canyonleigh, NSW, Australia
Longitude  +150:13:52.3
Latitude   -34:34:58.
Altitude   728 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  17:32:57.32
Reappearance   17:33:06.88
Comments: Event recorded with WAT-902H and then used 4 frame software integration
to process the video. Light curve available
at: http://www.hristopavlov.net/Observations/Positives/2009-12-12%20Ate/Event.html
Report prepopulated by IOTA Reporting Add-in for OW ver.1.4