Occultation event with (54656) 00SX362, event index number 4021
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/08/16 09:05:13 UTC
J2000 position of star is 06:06:45.6 +03:52:51
Equinox of date position of star is 06:08:09.9 +03:52:34
Star is 97 degrees from the moon. Moon is 16% illuminated.
Stellar brightness G=15.2, apparent brightess of occulting body is G=16.7
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 4.1 per integration for unocculted signal
Expected flux drop is 80% with SNR of 3.3 for the occulted depth (per occulted point)
Apparent velocity is 28.7 km/sec on the sky relative to the star, or, 23.3 arcsec/hr.
Position angle of asteroid motion is 94.7 degrees
The recommended exposure time corresponds to 8.6 km per image.
The 1-sigma error in the time of the event is 0.5 seconds.
The 1-sigma cross-track error in the shadow position is 31.5 km.
The sky-plane scale is 4439.3 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, maximum of 1.6 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2026/08/16 09:05UT) Object RA Dec mag sep mel Betelgeuse 05:56:36.8 +07:24:35 0.4 4.55 100 34Del Ori 05:33:22.1 -00:16:53 2.2 9.64 105 66 Ori 06:06:22.8 +04:09:18 5.6 0.53 97 PPM 149935 06:09:04.5 +04:23:54 8.5 0.57 97 PPM 149883 06:07:09.5 +03:47:09 9.6 0.27 97 54656_00SX362 06:08:09.9 +03:52:34 16.7 97 Positions are for equinox of date
Star training set for 54656_00SX362, (2026/08/16 09:05UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 4.55 100 34Del Ori 05:32:00.4 -00:17:57 2.2 9.64 105 66 Ori 06:04:58.3 +04:09:31 5.6 0.53 97 PPM 149935 06:07:39.9 +04:24:13 8.5 0.57 97 PPM 149883 06:05:45.3 +03:47:24 9.6 0.27 97 54656_00SX362 06:06:45.6 +03:52:51 16.7 97 Positions are for J2000