Occultation event with (54656) 00SX362, event index number 4139
Regions able to see the event: Australia
Geocentric closest approach at 2026/08/31 21:08:01 UTC
J2000 position of star is 06:15:33.9 +03:37:02
Equinox of date position of star is 06:16:58.2 +03:36:24
Star is 73 degrees from the moon. Moon is 85% illuminated.
Stellar brightness G=15.1, apparent brightess of occulting body is G=16.7
Use an exposure time of 0.40 seconds with the standard RECON-QHY system.
SNR of 5.3 per integration for unocculted signal
Expected flux drop is 81% with SNR of 4.3 for the occulted depth (per occulted point)
Apparent velocity is 23.2 km/sec on the sky relative to the star, or, 19.4 arcsec/hr.
Position angle of asteroid motion is 99.3 degrees
The recommended exposure time corresponds to 9.3 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 32.8 km.
The sky-plane scale is 4302.4 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, maximum of 1.9 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2026/08/31 21:08UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.0 +07:24:35 0.4 6.33 67 34Del Ori 05:33:22.2 -00:16:53 2.2 11.57 63 PPM 150016 06:11:47.5 +02:53:41 6.5 1.48 72 PPM 150186 06:17:16.5 +03:25:43 8.5 0.19 73 54656_00SX362 06:16:58.2 +03:36:24 16.7 73 Positions are for equinox of date
Star training set for 54656_00SX362, (2026/08/31 21:08UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 6.33 67 34Del Ori 05:32:00.4 -00:17:57 2.2 11.57 63 PPM 150016 06:10:23.7 +02:54:07 6.5 1.48 72 PPM 150186 06:15:52.4 +03:26:22 8.5 0.19 73 54656_00SX362 06:15:33.9 +03:37:02 16.7 73 Positions are for J2000