The Occultation of a 11.5 Star by 2001 XY26

Thur eve Apr 3, 2025 at 8:32:45pm

OWc page

 

This event is poor rank, but in a good direction for me at home. I'll give it a try. Kirk is also in good position from home. It's bright, but will require 2x or 1x for the 0.3s duration

Alt=28, Az=107 in Virgo. Very close to NGC 4043, a tiny faint SB0 galaxy. Use it just to avoid having to type in all the RA/Dec numbers if you're in a hurry

 

     

 

Results

Richard Nolthenius

I recorded this from my carport, at 2x setting. Unreduced

         

 

Kirk Bender

Observed from the entrance to the Long Marine Lab, at 1x

I got a noisy positive for 2001 XY26, 1x on Shaffer road by the marine lab entrance. PyOTE found a .25 sec event about 1 sec later than predicted, NIE test was 2.0 sigma distance.
It gave a mag drop of 1.378 vs predicted 6.2, but target curve was not much above background.

magDrop report: percentDrop: 71.9  magDrop: 1.378  +/- 0.930  (0.95 ci)

DNR: 1.35

D time: [03:32:45.1604]
D: 0.6800 containment intervals:  {+/- 0.0221} seconds
D: 0.9500 containment intervals:  {+/- 0.0830} seconds
D: 0.9973 containment intervals:  {+/- 0.2089} seconds

R time: [03:32:45.4107]
R: 0.6800 containment intervals:  {+/- 0.0221} seconds
R: 0.9500 containment intervals:  {+/- 0.0830} seconds
R: 0.9973 containment intervals:  {+/- 0.2089} seconds

Duration (R - D): 0.2503 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0399} seconds
Duration: 0.9500 containment intervals:  {+/- 0.1159} seconds
Duration: 0.9973 containment intervals:  {+/- 0.2563} seconds