A 4.5 minute occultation was recorded by Joseph Brimacombe, using CCD camera technique.
View the Occult prediction.
View the Bruno Sicardy Prediction.
Observers: 1 J Brimacombe,Cairns,NT, AU
The star is too faint to feature in our normal catalogs so Occult is not able to plot the event.
With only one chord it is not possible to determine whether Joe was north or south of the central line of the event. However, given that the expected maximum chord was 84 seconds, a 270 second evnt would suggest that the the actual size of Sedna may be much bigger than previously thought.
The figure below shows the light curve of the occultation.
Observation details for MP ( 90377 ) Sedna By Star USN 20900-0814908 On 2013-01-13 at 12:25:54.0 _______________________________ Observer Joseph Brimacombe Location Coral Towers Observatory, Cairns,NT, AU Longitude +145:45 Latitude -16:54 Altitude 10 m Datum WGS84 Telescope Aperture cm Seeing Steady Clear Camera Type CCD Other Camera Delay 30 Timing Disappearance 12:23:30.00 Reappearance 12:28:00.00 Comments: Had a go at imaging it from Cairns 1000 km below the predicted 3 sigma error line and witnessed it blinking out at 12 hr 24 min. The animation comprises 29 x 60 sec frames taken with a 41-cm RCOS and STL6K camera plus IR filter. Here's the link