The Occultation of a W=11.1 Star by Asteroid Tolkein

Dec 9, 2023 at 10:01:33pm

 

This is a high rank event, bright and high in the sky. Should be a high confidence 'hit', from the area around where the Los Padres National Forest touches Hwy 58 on the way to Carrizo Plain.

 

   

 

Results

Richard Nolthenius

I set up in a pull out about 1.5 miles west of Red Hill Rd on Hwy 58. Clear skies, got a 1.2s occultation of the target. In reductions, I tried using the TME option in PyMovie, but after setting up the Fourier finder and starting 'analyze', the software turned the .avi image upside down and froze with "unreadable" error on the .avi. Happened 3 times, then I gave up and did a static aperture reduction and it worked fine. Was it perhaps having trouble paging to the HDD because I have so many browser windows open and not enough memory? I doubt it, but if I successfully do a TME analyses, it moves at a glacial pace, needing almost an hour to do a few minute .avi run. The static aperture run lasts just a minute or two.


MagDrop report: percentDrop: 89.8 magDrop: 2.477 +/- 0.247 (0.95 ci)

DNR: 4.29

D time: [06:01:22.2355]
D: 0.6800 containment intervals: {+/- 0.0065} seconds
D: 0.9500 containment intervals: {+/- 0.0158} seconds
D: 0.9973 containment intervals: {+/- 0.0300} seconds

R time: [06:01:23.4494]
R: 0.6800 containment intervals: {+/- 0.0065} seconds
R: 0.9500 containment intervals: {+/- 0.0158} seconds
R: 0.9973 containment intervals: {+/- 0.0300} seconds

Duration (R - D): 1.2139 seconds
Duration: 0.6800 containment intervals: {+/- 0.0092} seconds
Duration: 0.9500 containment intervals: {+/- 0.0207} seconds
Duration: 0.9973 containment intervals: {+/- 0.0368} seconds


Kirk Bender

Kirk observed from the cow trough behind the windmill at Shell Creek Rd at Hwy 58. Unfortunately, he had a camcorder failure-to-record issue, for unknown reasons. This issue also killed his 1999TV18 occultation earlier in this evening. This event was far from Santa Cruz - no observations from Karl von Ahnen.