The Occultation of a W=12.26 Star by Asteroid 1999 RJ32

Wed Jan 15, 2025 at 1:29:42 am

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This event is in Virgo rising low in the East. Alt=22, Az=115. This should be visible from my driveway. Kirk is on the southern limit, I'm inside, and Karl is too far north of the northern limit to have any nominal chance. The rank is high, the RUWE is good. The event is long, at 1.5s and should be a good event to detect assuming clouds behave.

     

 

Results:

Richard Nolthenius

Clouds were not there, clear skies, good conditions. Star was easily followed on the video playback and had a clear 1s event. I set up in front of carport for unit N.

Start: 9:28:23 UT
End: 9:31:45 UT

Observed at 8x. Looked about 1s duration and 2s late, on playback. Processed at 3.2px static circular aperture masks, which looked as small as I could go without losing lots of starlight. Horz/vert median filtering.

magDrop report: percentDrop: 94.9 magDrop: 3.237 +/- 1.674 (0.95 ci)

DNR: 3.45

D time: [09:29:43.7517]
D: 0.6800 containment intervals: {+/- 0.0342} seconds
D: 0.9500 containment intervals: {+/- 0.0904} seconds
D: 0.9973 containment intervals: {+/- 0.1830} seconds

R time: [09:29:45.0933]
R: 0.6800 containment intervals: {+/- 0.0342} seconds
R: 0.9500 containment intervals: {+/- 0.0904} seconds
R: 0.9973 containment intervals: {+/- 0.1830} seconds

Duration (R - D): 1.3417 seconds
Duration: 0.6800 containment intervals: {+/- 0.0519} seconds
Duration: 0.9500 containment intervals: {+/- 0.1166} seconds
Duration: 0.9973 containment intervals: {+/- 0.2176} seconds

     

 

Kirk Bender

Positive for 1999 RJ32, 8x from home on Jan. 15. Rather noisy, but a definite event that passes false positive.


magDrop report: percentDrop: 84.8  magDrop: 2.045  +/- 0.736  (0.95 ci)

DNR: 3.53

D time: [09:29:43.9410]
D: 0.6800 containment intervals:  {+/- 0.0306} seconds
D: 0.9500 containment intervals:  {+/- 0.0796} seconds
D: 0.9973 containment intervals:  {+/- 0.1681} seconds

R time: [09:29:44.6615]
R: 0.6800 containment intervals:  {+/- 0.0306} seconds
R: 0.9500 containment intervals:  {+/- 0.0796} seconds
R: 0.9973 containment intervals:  {+/- 0.1681} seconds

Duration (R - D): 0.7205 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0445} seconds
Duration: 0.9500 containment intervals:  {+/- 0.1018} seconds
Duration: 0.9973 containment intervals:  {+/- 0.2055} seconds