Occultation event with (32475) 00SD234, event index number 3996
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/08/13 08:33:22 UTC
J2000 position of star is 04:34:57.5 +43:30:02
Equinox of date position of star is 04:36:50.9 +43:33:13
Star is 76 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=13.8, apparent brightess of occulting body is G=16.7
Use an exposure time of 0.20 seconds with the standard RECON-QHY system.
SNR of 8.7 per integration for unocculted signal
Expected flux drop is 93% with SNR of 8.1 for the occulted depth (per occulted point)
Apparent velocity is 26.7 km/sec on the sky relative to the star, or, 23.1 arcsec/hr.
Position angle of asteroid motion is 50.3 degrees
The recommended exposure time corresponds to 5.3 km per image.
The 1-sigma error in the time of the event is 1.4 seconds.
The 1-sigma cross-track error in the shadow position is 16.3 km.
The sky-plane scale is 4147.9 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, maximum of 1.6 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 38.4 km used for deployment plan.
Star training set for 32475_00SD234, (2026/08/13 08:33UT) Object RA Dec mag sep mel Aldebaran 04:37:27.1 +16:33:38 0.8 26.99 79 3Iot Aur 04:58:43.9 +33:12:20 2.7 11.19 73 59 Per 04:44:48.0 +43:24:47 5.2 1.45 75 PPM 047183 04:35:57.4 +43:08:27 7.6 0.44 77 PPM 047173 04:35:28.7 +43:35:39 9.2 0.25 77 32475_00SD234 04:36:50.9 +43:33:13 16.7 76 Positions are for equinox of date
Star training set for 32475_00SD234, (2026/08/13 08:33UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 26.99 79 3Iot Aur 04:56:59.6 +33:09:57 2.7 11.19 73 59 Per 04:42:54.4 +43:21:53 5.2 1.45 75 PPM 047183 04:34:04.5 +43:05:14 7.6 0.44 77 PPM 047173 04:33:35.4 +43:32:25 9.2 0.25 77 32475_00SD234 04:34:57.5 +43:30:02 16.7 76 Positions are for J2000