Occultation event with (32475) 00SD234, event index number 1482
Regions able to see the event: SAmericaN
Geocentric closest approach at 2025/11/09 23:23:48 UTC
J2000 position of star is 02:10:41.1 +30:30:28
Equinox of date position of star is 02:12:11.7 +30:37:43
Star is 68 degrees from the moon. Moon is 74% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 4.2 per integration for unocculted signal
Expected flux drop is 53% with SNR of 2.2 for the occulted depth (per occulted point)
Apparent velocity is 19.1 km/sec on the sky relative to the star, or, 22.1 arcsec/hr.
Position angle of asteroid motion is 84.7 degrees
The recommended exposure time corresponds to 9.5 km per image.
The 1-sigma error in the time of the event is 1.8 seconds.
The 1-sigma cross-track error in the shadow position is 24.6 km.
The sky-plane scale is 3110.7 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, aximum of 2.2 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, (2025/11/09 23:24UT) Object RA Dec mag sep mel Aldebaran 04:37:24.5 +16:33:33 0.8 35.91 41 Hamal 02:08:38.2 +23:35:00 2.0 7.09 71 6 Tri 02:13:52.8 +30:25:22 5.8 0.42 68 PPM 067097 02:15:51.1 +30:50:40 7.9 0.81 67 6 Tri 02:13:52.8 +30:25:22 5.8 0.42 68 PPM 067026 02:11:36.0 +30:30:53 10.7 0.17 68 32475_00SD234 02:12:11.7 +30:37:43 15.7 68 Positions are for equinox of date
Star training set for 32475_00SD234, (2025/11/09 23:24UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 35.91 41 Hamal 02:07:10.8 +23:27:41 2.0 7.09 71 6 Tri 02:12:22.2 +30:18:09 5.8 0.42 68 PPM 067097 02:14:20.1 +30:43:29 7.9 0.81 67 6 Tri 02:12:22.2 +30:18:09 5.8 0.42 68 PPM 067026 02:10:05.5 +30:23:37 10.7 0.17 68 32475_00SD234 02:10:41.1 +30:30:28 15.7 68 Positions are for J2000