Occultation event with (54656) 00SX362, event index number 5121
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/12/08 22:43:12 UTC
J2000 position of star is 06:15:01.8 +02:04:33
Equinox of date position of star is 06:16:26.0 +02:03:56
Star is 149 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=11.6, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 27.4 per integration for unocculted signal
Expected flux drop is 98% with SNR of 26.9 for the occulted depth (per occulted point)
Apparent velocity is 18.5 km/sec on the sky relative to the star, or, 19.4 arcsec/hr.
Position angle of asteroid motion is 100.0 degrees
The recommended exposure time corresponds to 2.2 km per image.
The 1-sigma error in the time of the event is 0.6 seconds.
The 1-sigma cross-track error in the shadow position is 32.7 km.
The sky-plane scale is 3433.2 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, maximum of 2.4 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 1.0 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2026/12/08 22:43UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.9 +07:24:35 0.4 7.27 156 34Del Ori 05:33:23.1 -00:16:53 2.2 11.01 151 PPM 150016 06:11:48.4 +02:53:40 6.5 1.42 150 PPM 150144 06:16:01.6 +02:16:47 7.4 0.24 149 PPM 150171 06:16:53.2 +02:07:38 8.9 0.13 149 54656_00SX362 06:16:26.0 +02:03:56 16.0 148 Positions are for equinox of date
Star training set for 54656_00SX362, (2026/12/08 22:43UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 7.27 156 34Del Ori 05:32:00.4 -00:17:57 2.2 11.01 151 PPM 150016 06:10:23.7 +02:54:07 6.5 1.42 150 PPM 150144 06:14:37.3 +02:17:23 7.4 0.24 149 PPM 150171 06:15:29.0 +02:08:16 8.9 0.13 149 54656_00SX362 06:15:01.8 +02:04:33 16.0 149 Positions are for J2000