Occultation event with (32475) 00SD234, event index number 1527
Regions able to see the event: Australia
Geocentric closest approach at 2025/11/17 10:41:47 UTC
J2000 position of star is 02:05:45.9 +30:22:40
Equinox of date position of star is 02:07:16.1 +30:30:02
Star is 160 degrees from the moon. Moon is 7% illuminated.
Stellar brightness G=13.5, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.17 seconds with the standard RECON-QHY system.
SNR of 9.8 per integration for unocculted signal
Expected flux drop is 89% with SNR of 8.7 for the occulted depth (per occulted point)
Apparent velocity is 18.0 km/sec on the sky relative to the star, or, 20.7 arcsec/hr.
Position angle of asteroid motion is 81.3 degrees
The recommended exposure time corresponds to 3.1 km per image.
The 1-sigma error in the time of the event is 2.0 seconds.
The 1-sigma cross-track error in the shadow position is 21.8 km.
The sky-plane scale is 3132.4 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, aximum of 2.3 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 38.4 km used for deployment plan.
Star training set for 32475_00SD234, (2025/11/17 10:42UT) Object RA Dec mag sep mel Aldebaran 04:37:24.5 +16:33:33 0.8 36.91 134 Hamal 02:08:38.3 +23:35:01 2.0 6.92 165 6 Tri 02:13:52.9 +30:25:22 5.8 1.43 159 PPM 091380 02:09:07.6 +29:51:48 8.0 0.75 160 PPM 066933 02:06:14.4 +30:49:48 8.6 0.40 160 PPM 066944 02:07:00.6 +30:25:51 10.5 0.09 160 32475_00SD234 02:07:16.1 +30:30:02 15.7 160 Positions are for equinox of date
Star training set for 32475_00SD234, (2025/11/17 10:42UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 36.91 134 Hamal 02:07:10.8 +23:27:41 2.0 6.92 165 6 Tri 02:12:22.2 +30:18:09 5.8 1.43 159 PPM 091380 02:07:37.5 +29:44:28 8.0 0.75 160 PPM 066933 02:04:44.1 +30:42:25 8.6 0.40 160 PPM 066944 02:05:30.5 +30:18:29 10.5 0.09 160 32475_00SD234 02:05:45.9 +30:22:40 15.7 160 Positions are for J2000