Occultation event with (32475) 00SD234, event index number 4303
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/09/25 05:17:56 UTC
J2000 position of star is 04:51:40.5 +47:51:25
Equinox of date position of star is 04:53:40.5 +47:54:00
Star is 93 degrees from the moon. Moon is 97% illuminated.
Stellar brightness G=12.5, apparent brightess of occulting body is G=16.5
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 16.0 per integration for unocculted signal
Expected flux drop is 98% with SNR of 15.6 for the occulted depth (per occulted point)
Apparent velocity is 15.9 km/sec on the sky relative to the star, or, 15.4 arcsec/hr.
Position angle of asteroid motion is 6.1 degrees
The recommended exposure time corresponds to 1.9 km per image.
The 1-sigma error in the time of the event is 2.6 seconds.
The 1-sigma cross-track error in the shadow position is 12.5 km.
The sky-plane scale is 3727.5 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, maximum of 2.6 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 38.4 km used for deployment plan.
Star training set for 32475_00SD234, (2026/09/25 05:18UT) Object RA Dec mag sep mel Aldebaran 04:37:27.5 +16:33:39 0.8 31.52 86 34Bet Aur 06:01:29.4 +44:56:50 1.9 12.03 104 PPM 047420 04:53:10.4 +48:47:02 5.7 0.89 93 PPM 047386 04:51:24.2 +47:14:22 7.8 0.76 92 PPM 047398 04:52:07.1 +47:54:29 8.6 0.26 92 PPM 047441 04:54:34.8 +47:53:45 10.7 0.15 93 32475_00SD234 04:53:40.5 +47:54:00 16.5 93 Positions are for equinox of date
Star training set for 32475_00SD234, (2026/09/25 05:18UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 31.52 86 34Bet Aur 05:59:31.6 +44:56:51 1.9 12.03 104 PPM 047420 04:51:09.2 +48:44:26 5.7 0.89 93 PPM 047386 04:49:25.2 +47:11:42 7.8 0.76 92 PPM 047398 04:50:07.1 +47:51:50 8.6 0.26 92 PPM 047441 04:52:34.7 +47:51:12 10.7 0.15 93 32475_00SD234 04:51:40.5 +47:51:25 16.5 93 Positions are for J2000