Occultation of a W=12.8 Star by Asteroid (55071) 2001 QE86

Dec 9, 2024 at 10:29:09pm PST

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This is a medium ranked event which skims the Santa Cruz (West Cliff) coast, and misses Cabrillo College, and totally misses Karl, unfortunately. It's marginally do-able, with a 0.4s duration, full drop, but bright enough to record at 4x and so should get a passing FP test if we're lucky. Kirk's on the northern limit. I need to drive home from Cabrillo College and grab gear quickly and continue on to Natural Bridges State Beach.

     

 

Results:

Richard Nolthenius

I observed from the foot of Natural Bridges drive, 37 feet north of the last palm tree before the light post and West Cliff, at the entrance to Natural Bridges State Beach. Conditions were good; Cold, calm, decent seeing. 

I do not see any event, and it should be visible. It's a miss. I was deeper into the predicted shadow than Kirk Bender, so my miss makes Kirk's miss interpretation even more likely to be true.

Begin: 06:27:58 UT, End:06:30:11UT

Integ: 4x, gamma=1, disconnected monitor

   

 

Kirk Bender

Observed from home, on the predicted northern limit.

I don't see an event for Monday's 2001 QE86, 4x from home. There is a one-integration dip near the predicted time, but there are plenty of other 1-integration dips throughout. I was on the northern path limit, so a miss or undetectably short event was possible, on the other hand the rank was not great, so it was also possible I'd get an event, but there's no apparent event in my target curve, and it was well above background level. Max duration was 0.4 sec, predicted drop was 4.5m,  PyOTE detectability test reports:"An event of duration 0.150 seconds with magDrop: 4.5 is likely detectable."