The Occultation of a 9.8 Star for 1.3s by Asteroid 2003 XW25

Sat morn 12:46:04am Oct 11, 2025

OWc page

 

This is a bright, long event. But likely to be clouded out. The path southern limit cuts across the main UCSC campus, tilts to the NE. Karl is on the centerline. Good spots closer at Llama Lane in Cave Gulch, and Twin Gates a couple of miles further up. Pineridge Rd is south of the northern limit, but Sunlit Lane is north of the shadow.

Alt=22, Az=84 in Orion, 4 deg to the right of the top of the end of the club.

Cloud cover at event time prediction

     

 

Results:

We had clear skies; no clouds at all. Good conditions.

Richard Nolthenius

I set up on Llama Lane, about level with the out building east of the house that was north of me. Maybe 50 yds before the little turnout I've used in the past. I used 1x and Gain=41. The star was bright and easy to follow, and it looked live on screen like a miss. Confirmed on the light curves. Kirk and I both got misses. Even a 1/25ths event would have been easy to see. Let alone an event 100x longer. We were only about a mile apart.

     

 

Kirk Bender

Looks like a miss for me for 2003 XW25, Oct 11 at Twin Gates, 1x, although I was not far from centerline and rank was good. There's a one point drop near predicted, but not much deeper than other drops nearby, and there are other single point drops as deep or deeper throughout. PyOTE detectability tool reported an event as short as 0.09s would likely be detectable.  Predicted max duration was 1.25s.