The Occultation of a W=12.8 Star by 1999 AU, for 0.65s

Tue eve 10:55pm

OWc page

 

This will be a bit tough, only 0.6s long and 12.8 magnitude. But the altitude is high and no moon, so in a dark sky it should be do-able at 4x or even 8x if necessary.

Alt=59, Az=95 high in the east in Pisces, 10 degrees upper right of the vertex star in Triangulum

     

 

Results:

Richard Nolthenius

I was still teaching Astro 8A; with very active astrophotography, and this path needed travel I was unable to get enough time for. No data.

Kirk Bender

I got a definite 0.8646 event for 1999 AU, 4x at the Berm on Oct. 6.

PyOTE NIE sigma distance = 10.5

magDrop report: percentDrop: 79.6  magDrop: 1.726  +/- 0.546  (0.95 ci)

DNR: 2.64

D time: [05:55:09.2063]
D: 0.6800 containment intervals:  {+/- 0.0250} seconds
D: 0.9500 containment intervals:  {+/- 0.0720} seconds
D: 0.9973 containment intervals:  {+/- 0.1623} seconds

R time: [05:55:10.0739]
R: 0.6800 containment intervals:  {+/- 0.0250} seconds
R: 0.9500 containment intervals:  {+/- 0.0720} seconds
R: 0.9973 containment intervals:  {+/- 0.1623} seconds

Duration (R - D): 0.8676 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0364} seconds
Duration: 0.9500 containment intervals:  {+/- 0.0903} seconds
Duration: 0.9973 containment intervals:  {+/- 0.1920} seconds

 


       

Karl von Ahnen

magDrop report: percentDrop: 85.7  magDrop: 2.114  +/- 0.934  (0.95 ci)

DNR: 2.56

 

D time: [05:55:07.6833]
D: 0.6800 containment intervals:  {+/- 0.0244} seconds
D: 0.9500 containment intervals:  {+/- 0.0750} seconds

D: 0.9973 containment intervals:  {+/- 0.1731} seconds

 

R time: [05:55:08.4567]
R: 0.6800 containment intervals:  {+/- 0.0244} seconds
R: 0.9500 containment intervals:  {+/- 0.0750} seconds

R: 0.9973 containment intervals:  {+/- 0.1731} seconds

 

Duration (R - D): 0.7734 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0382} seconds
Duration: 0.9500 containment intervals:  {+/- 0.0963} seconds
Duration: 0.9973 containment intervals:  {+/- 0.2022} seconds


Notes: 
Oct 07 05:55:07 UT 1999 AU murkier, (barely see mag3), used 4X, Looked like fast (maybe 1/4 sec.) blink-out. Processing: clear event.