Summary of the Occultation of SAO 108610 by 25 Phocaea

October 3, 2006

00:52:08.90 UT  (first event)

October 2, 2006 at 8:52:08.90 EDT

Latitude:  43 d   00 m   24.0 s   North
Longitude:  77 d   07 m   06.0 s   West
Altitude:  144 m

+ 51 km from the predicted path

Newark, New York
10" LX200GPS at f/6.3 using PC164 gain modified video camera
Recorded by Brad Timerson

Predicted path of occultation from Steve Preston
Approximate observatory location shown just below Lake Ontario to the west of the predicted path.
Map of Predicted Path


Here is a low-resolution video clip of the event.  (670 kb)
  The video starts a few seconds before the WWV time signal at 00:52:00 UT, which can just be heard.
First disappearance occurs nearly 9 seconds after that time signal.
Watch as the star/asteroid combination dim to the magnitude of the asteroid only.
Then the star reappears, disappears, and reappears in rapid succession.
This looks like a GRAZING occultation of an asteroid!

Graph produced from LiMovie analysis of the Occultation
LiMovie Analysis Graph

Star first disappears at 00:52:08.90 UT

Stays hidden for 102 video frames - 3.40 seconds
Reappears for 14 frames - 0.47 seconds
Disappears for 9 frames - 0.30 seconds
Reappears for good at 00:52:13.07 UT