Occultation event with (54656) 00SX362, event index number 4321
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/09/28 23:41:57 UTC
J2000 position of star is 06:26:26.0 +02:53:57
Equinox of date position of star is 06:27:50.0 +02:52:54
Star is 66 degrees from the moon. Moon is 93% illuminated.
Stellar brightness G=15.6, apparent brightess of occulting body is G=16.6
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 5.8 per integration for unocculted signal
Expected flux drop is 71% with SNR of 4.1 for the occulted depth (per occulted point)
Apparent velocity is 11.4 km/sec on the sky relative to the star, or, 10.2 arcsec/hr.
Position angle of asteroid motion is 114.5 degrees
The recommended exposure time corresponds to 9.1 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 34.8 km.
The sky-plane scale is 4016.1 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, maximum of 3.9 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2026/09/28 23:42UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.2 +07:24:35 0.4 8.99 57 Alhena 06:39:15.4 +16:22:27 1.9 13.78 65 PPM 150489 06:27:10.2 +02:15:15 6.4 0.65 66 PPM 150547 06:28:44.4 +02:53:25 6.6 0.23 66 PPM 150482 06:27:04.2 +02:55:03 10.7 0.19 65 54656_00SX362 06:27:50.0 +02:52:54 16.6 66 Positions are for equinox of date
Star training set for 54656_00SX362, (2026/09/28 23:42UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 8.99 57 Alhena 06:37:42.8 +16:23:56 1.9 13.78 65 PPM 150489 06:25:46.5 +02:16:17 6.4 0.65 66 PPM 150547 06:27:20.4 +02:54:30 6.6 0.23 66 PPM 150482 06:25:40.2 +02:56:04 10.7 0.19 65 54656_00SX362 06:26:26.0 +02:53:57 16.6 66 Positions are for J2000