Occultation event with (11089) 94CS8, event index number 1433
Regions able to see the event: Australia
Geocentric closest approach at 2025/10/30 13:52:23 UTC
J2000 position of star is 00:27:31.5 -05:31:11
Equinox of date position of star is 00:28:50.5 -05:22:37
Star is 46 degrees from the moon. Moon is 59% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 4.0 per integration for unocculted signal
Expected flux drop is 48% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 12.2 km/sec on the sky relative to the star, or, 13.8 arcsec/hr.
Position angle of asteroid motion is 73.8 degrees
The recommended exposure time corresponds to 9.1 km per image.
The 1-sigma error in the time of the event is 1.0 seconds.
The 1-sigma cross-track error in the shadow position is 17.3 km.
The sky-plane scale is 3178.0 km/arcsec.
Diameter estimates:
42.3 km assuming a 5% albedo, aximum of 3.5 sec for a central chord
17.3 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 37.0 km used for deployment plan.
Star training set for 11089_94CS8, (2025/10/30 13:52UT) Object RA Dec mag sep mel Fomalhaut 22:59:04.3 -29:29:05 1.2 32.10 24 Diphda 00:44:53.1 -17:50:43 2.0 13.07 47 12 Cet 00:31:21.5 -03:48:54 5.7 1.68 47 PPM 182264 00:28:24.5 -04:51:40 7.2 0.53 46 PPM 182254 00:27:58.1 -05:20:00 10.0 0.22 46 11089_94CS8 00:28:50.5 -05:22:37 15.9 47 Positions are for equinox of date
Star training set for 11089_94CS8, (2025/10/30 13:52UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.7 -29:37:24 1.2 32.10 24 Diphda 00:43:35.8 -17:59:11 2.0 13.07 47 12 Cet 00:30:02.4 -03:57:27 5.7 1.68 47 PPM 182264 00:27:05.5 -05:00:14 7.2 0.53 46 PPM 182254 00:26:39.1 -05:28:34 10.0 0.22 46 11089_94CS8 00:27:31.5 -05:31:11 15.9 46 Positions are for J2000