Occultation event with (54656) 00SX362, event index number 1269
Regions able to see the event: Europe
Geocentric closest approach at 2025/09/06 03:27:15 UTC
J2000 position of star is 04:45:55.8 -09:12:46
Equinox of date position of star is 04:47:09.5 -09:10:04
Star is 102 degrees from the moon. Moon is 97% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=16.4
Use an exposure time of 0.65 seconds with the standard RECON-QHY system.
SNR of 3.5 per integration for unocculted signal
Expected flux drop is 58% with SNR of 2.0 for the occulted depth (per occulted point)
Apparent velocity is 13.9 km/sec on the sky relative to the star, or, 13.1 arcsec/hr.
Position angle of asteroid motion is 133.8 degrees
The recommended exposure time corresponds to 9.0 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 32.0 km.
The sky-plane scale is 3809.4 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, aximum of 3.2 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2025/09/06 03:27UT) Object RA Dec mag sep mel Rigel 05:15:46.4 -08:10:26 0.1 7.14 109 67Bet Eri 05:09:06.8 -05:03:19 2.8 6.82 109 55 Eri 04:44:49.2 -08:45:00 4.7 0.71 102 PPM 187285 04:46:00.0 -09:03:01 8.3 0.31 102 PPM 187323 04:47:50.3 -09:15:42 9.3 0.19 102 54656_00SX362 04:47:09.5 -09:10:04 16.4 102 Positions are for equinox of date
Star training set for 54656_00SX362, (2025/09/06 03:27UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 7.14 109 67Bet Eri 05:07:50.8 -05:05:13 2.8 6.82 109 55 Eri 04:43:35.2 -08:47:47 4.7 0.71 102 PPM 187285 04:44:46.2 -09:05:46 8.3 0.31 102 PPM 187323 04:46:36.7 -09:18:23 9.3 0.19 102 54656_00SX362 04:45:55.8 -09:12:46 16.4 102 Positions are for J2000