The Occultation of a Very Red W=9.2 Star for 1.1s by Asteroid 1999 CZ54

Wed morn June 10, 2026 at 12:00:40am

OWc page

 

This is a very bright star, andd long. Should be easy. However, the RUWE is 1.35 which is a bit higher than the no-problemo range which is below 1.20. Probably safer to not try from the edge.

Alt=28, Az=154 in Ophiuchus, 18 degrees due left of Antares, below right of the foot of Ophiuchus by about 6 degrees, right angle with this and Antares to our target

 

     

 

Results:

Richard Nolthenius

I set up below the old Red Cafe on Hwy 17. Clear and calm and good conditions - but I'd forgotten to re-pack stuff I took out when delivering Kirk to his site, and had to run back. It left me with very little time and while I set up efficiently, I could not ID the stars in the crowded field. I recorded. Maybe it was on-chip, maybe not.

 

         

 

Kirk Bender

I got a 1s event for 1999 CZ54, 1x at Glenwood Dr. off 17, June 10. Finally the first long, clear, solid positive in a long while.


PyOTE NIE sigma distance = 56.6
magDrop report: percentDrop: 95.5  magDrop: 3.363  +/- 0.670  (0.95 ci)

DNR: 3.06

D time: [07:00:39.1349]
D: 0.6800 containment intervals:  {+/- 0.0041} seconds
D: 0.9500 containment intervals:  {+/- 0.0106} seconds
D: 0.9973 containment intervals:  {+/- 0.0235} seconds

R time: [07:00:40.1318]
R: 0.6800 containment intervals:  {+/- 0.0041} seconds
R: 0.9500 containment intervals:  {+/- 0.0106} seconds
R: 0.9973 containment intervals:  {+/- 0.0235} seconds

Duration (R - D): 0.9969 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0059} seconds
Duration: 0.9500 containment intervals:  {+/- 0.0137} seconds
Duration: 0.9973 containment intervals:  {+/- 0.0301} seconds