Occultation event with (32475) 00SD234, event index number 4310
Regions able to see the event: Japan,Australia
Geocentric closest approach at 2026/09/25 20:20:23 UTC
J2000 position of star is 04:51:42.6 +47:55:14
Equinox of date position of star is 04:53:42.7 +47:57:49
Star is 85 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=16.5
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 5.6 per integration for unocculted signal
Expected flux drop is 73% with SNR of 4.1 for the occulted depth (per occulted point)
Apparent velocity is 15.8 km/sec on the sky relative to the star, or, 15.3 arcsec/hr.
Position angle of asteroid motion is 5.1 degrees
The recommended exposure time corresponds to 9.5 km per image.
The 1-sigma error in the time of the event is 2.5 seconds.
The 1-sigma cross-track error in the shadow position is 13.1 km.
The sky-plane scale is 3721.6 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 20:20UT) Object RA Dec mag sep mel Aldebaran 04:37:27.5 +16:33:39 0.8 31.58 78 34Bet Aur 06:01:29.4 +44:56:50 1.9 12.03 96 PPM 047420 04:53:10.4 +48:47:02 5.7 0.83 85 PPM 047386 04:51:24.2 +47:14:22 7.8 0.82 84 PPM 047398 04:52:07.1 +47:54:29 8.6 0.27 85 PPM 047441 04:54:34.8 +47:53:45 10.7 0.16 85 32475_00SD234 04:53:42.7 +47:57:49 16.5 85 Positions are for equinox of date
Star training set for 32475_00SD234, (2026/09/25 20:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 31.58 78 34Bet Aur 05:59:31.6 +44:56:51 1.9 12.03 96 PPM 047420 04:51:09.2 +48:44:26 5.7 0.83 85 PPM 047386 04:49:25.2 +47:11:42 7.8 0.82 84 PPM 047398 04:50:07.1 +47:51:50 8.6 0.27 85 PPM 047441 04:52:34.7 +47:51:12 10.7 0.16 85 32475_00SD234 04:51:42.6 +47:55:14 16.5 85 Positions are for J2000