The Occultation of a W=13.5 Star by (43948) 1997 AU12

Thur eve Feb 20, 2025 at 7:51:34pm

OWc page

 

This event, frustratingly, has the same path angle as the 2000 HP41 event that is 1 hr earlier, but, the northern limit of one event is the southern limit of the other, forcing a choice . Tough event, only 0.5s long. It looks like the thing to do, is try this either from Cabrillo if time to get there, or else from "The (original) Farm" Park in Capitola on Soquel. Then go to Cabrillo. Too far south for Karl.

Alt=45, Az=101 in East,  5 degrees below the Beehive Star Cluster

 

     

 

Results

Richard Nolthenius

I set up in the parking lot (north edge) of the original "The Farm" Park. It's nominally a park, but really it's just a repository of heavy construction gear. But the parking lot is usable and a good spot for future reference for events.

Recording: no clouds or evidence of clouds in the light curves. Median filtering, first eliminating the rows with numerals. 8x setting. Near centerline, 96% odds of a positive. But, a miss.

 

 

Kirk Bender

I don't see an event for 1997 AU12, thurs. Feb. 20, 8x at home. Target was not bright, but well above background. The event was rank 100, and odds 98% from home, I was near the centerline so I don't know why I would get a miss. I checked to make sure I was analyzing the right target, etc. Predicted max duration was 0.45s at 3.4m drop. PyOTE detectability tool reported an event of duration 0.45s would likely be detectable, so supposedly at the limit of being detectable with my data. Maybe seeing wasn't good enough.