The Occultation of a W=12.3 Star by asteroid 1986 QZ

Sun morn June 8, 2025 at 1:34:32am

OWc page

 

This event last 0.7s, and at 12.3 that makes it quite do-able in clear skies. The asteroid has been known for almost 40 years now; for as long as I've been at Cabrillo College - so the orbit should be better than most and we should hope for lower odds of a miss. We'll convene at Karl's for the evening, then at midnight plan to break for getting the occultation.

 

Alt=33, Az=169 in Sagittarius, 10 degrees above the teapot spout, almost in Scutum.

     

 

Results:

Karl, Kirk and I all got recordings in windy conditions at Loma Prieta Rd along the HogBack and nearby. Clear, dry, first-look says Karl had a miss.

 

Richard Nolthenius

I set on  Loma Prieta Rd, at 4x. My location was next to the knoll on the bend in Loma Prieta Rd.

Long: 121 50 36.35
Lat: 37 06 01.58
Elev: 1003m

Very windy, I used my "batman pose" to keep it more or less OK during the crucial minute before/after the event, but still a gust got through. But I am confident I had a miss.

The drops were due to wind gusts shaking the scope

PyOTE finds no event.

 

 

Kirk Bender

Set up behind a hill giving some wind protection, but got worse as he got closer to the event time. He was the southern-most of our team.

         

 

Karl von Ahnen

Set up at a spot with a good view to the south, but extremely exposed to the wind. Setting up behind his car didn't help enough. He was essentially "winded out", but on playback he didn't see any event.