Occultation event with (54656) 00SX362, event index number 1329
Regions able to see the event: SAfrica
Geocentric closest approach at 2025/10/01 21:38:56 UTC
J2000 position of star is 04:48:32.0 -10:53:50
Equinox of date position of star is 04:49:44.9 -10:51:13
Star is 119 degrees from the moon. Moon is 69% illuminated.
Stellar brightness G=16.2, apparent brightess of occulting body is G=16.2
Use an exposure time of 0.90 seconds with the standard RECON-QHY system.
SNR of 3.6 per integration for unocculted signal
Expected flux drop is 50% with SNR of 1.8 for the occulted depth (per occulted point)
Apparent velocity is 10.2 km/sec on the sky relative to the star, or, 10.3 arcsec/hr.
Position angle of asteroid motion is 12.5 degrees
The recommended exposure time corresponds to 9.2 km per image.
The 1-sigma error in the time of the event is 3.0 seconds.
The 1-sigma cross-track error in the shadow position is 8.8 km.
The sky-plane scale is 3584.9 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, aximum of 4.4 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2025/10/01 21:39UT) Object RA Dec mag sep mel Rigel 05:15:46.6 -08:10:26 0.1 6.95 125 67Bet Eri 05:09:07.0 -05:03:18 2.8 7.52 126 55 Eri 04:44:49.4 -08:44:59 4.7 2.43 119 PPM 214910 04:52:26.9 -10:49:43 8.2 0.66 119 PPM 214850 04:49:40.6 -10:49:41 9.2 0.03 119 54656_00SX362 04:49:44.9 -10:51:13 16.2 119 Positions are for equinox of date
Star training set for 54656_00SX362, (2025/10/01 21:39UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 6.95 125 67Bet Eri 05:07:50.8 -05:05:13 2.8 7.52 126 55 Eri 04:43:35.2 -08:47:47 4.7 2.43 119 PPM 214910 04:51:14.0 -10:52:15 8.2 0.66 119 PPM 214850 04:48:27.7 -10:52:18 9.2 0.03 119 54656_00SX362 04:48:32.0 -10:53:50 16.2 119 Positions are for J2000