Occultation event with (32475) 00SD234, event index number 3876
Regions able to see the event: Europe
Geocentric closest approach at 2026/07/22 01:21:23 UTC
J2000 position of star is 04:18:16.6 +41:21:21
Equinox of date position of star is 04:20:06.5 +41:25:07
Star is 144 degrees from the moon. Moon is 56% illuminated.
Stellar brightness G=13.9, apparent brightess of occulting body is G=16.7
Use an exposure time of 0.25 seconds with the standard RECON-QHY system.
SNR of 9.7 per integration for unocculted signal
Expected flux drop is 93% with SNR of 9.0 for the occulted depth (per occulted point)
Apparent velocity is 32.8 km/sec on the sky relative to the star, or, 27.2 arcsec/hr.
Position angle of asteroid motion is 58.8 degrees
The recommended exposure time corresponds to 8.2 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 20.4 km.
The sky-plane scale is 4339.1 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, maximum of 1.3 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 0.5 sec for a central chord
Cross-track diameter of 38.4 km used for deployment plan.
Star training set for 32475_00SD234, (2026/07/22 01:21UT) Object RA Dec mag sep mel Aldebaran 04:37:26.9 +16:33:38 0.8 25.14 145 44Zet Per 03:55:48.5 +31:57:37 2.8 10.63 152 PPM 046963 04:19:58.9 +42:12:14 6.1 0.79 143 PPM 046994 04:22:09.2 +41:29:11 8.2 0.39 143 PPM 046978 04:20:51.1 +41:36:13 9.1 0.23 144 PPM 046973 04:20:28.7 +41:20:29 10.4 0.10 144 32475_00SD234 04:20:06.5 +41:25:07 16.7 143 Positions are for equinox of date
Star training set for 32475_00SD234, (2026/07/22 01:21UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 25.14 145 44Zet Per 03:54:07.9 +31:53:01 2.8 10.63 152 PPM 046963 04:18:08.2 +42:08:27 6.1 0.79 143 PPM 046994 04:20:19.0 +41:25:28 8.2 0.39 143 PPM 046978 04:19:00.9 +41:32:28 9.1 0.23 144 PPM 046973 04:18:38.9 +41:16:43 10.4 0.10 144 32475_00SD234 04:18:16.6 +41:21:21 16.7 144 Positions are for J2000