Occultation event with (32475) 00SD234, event index number 4031
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/08/17 07:24:29 UTC
J2000 position of star is 04:37:28.2 +43:53:29
Equinox of date position of star is 04:39:22.1 +43:56:35
Star is 127 degrees from the moon. Moon is 24% illuminated.
Stellar brightness G=14.5, apparent brightess of occulting body is G=16.7
Use an exposure time of 0.35 seconds with the standard RECON-QHY system.
SNR of 8.1 per integration for unocculted signal
Expected flux drop is 89% with SNR of 7.2 for the occulted depth (per occulted point)
Apparent velocity is 25.5 km/sec on the sky relative to the star, or, 22.3 arcsec/hr.
Position angle of asteroid motion is 48.1 degrees
The recommended exposure time corresponds to 8.9 km per image.
The 1-sigma error in the time of the event is 1.6 seconds.
The 1-sigma cross-track error in the shadow position is 15.9 km.
The sky-plane scale is 4110.6 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 0.7 sec for a central chord
Cross-track diameter of 38.4 km used for deployment plan.
Star training set for 32475_00SD234, (2026/08/17 07:24UT) Object RA Dec mag sep mel Aldebaran 04:37:27.1 +16:33:38 0.8 27.39 132 3Iot Aur 04:58:43.9 +33:12:20 2.7 11.38 126 59 Per 04:44:48.0 +43:24:47 5.2 1.12 126 PPM 047254 04:41:26.8 +43:42:35 8.1 0.44 127 PPM 047225 04:39:13.0 +44:11:38 9.5 0.25 127 32475_00SD234 04:39:22.1 +43:56:35 16.7 127 Positions are for equinox of date
Star training set for 32475_00SD234, (2026/08/17 07:24UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 27.39 132 3Iot Aur 04:56:59.6 +33:09:57 2.7 11.38 126 59 Per 04:42:54.4 +43:21:53 5.2 1.12 126 PPM 047254 04:39:33.0 +43:39:33 8.1 0.44 127 PPM 047225 04:37:18.7 +44:08:32 9.5 0.25 127 32475_00SD234 04:37:28.2 +43:53:29 16.7 127 Positions are for J2000