Occultation event with (24451) 00QS104, event index number 4327
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/09/30 01:38:49 UTC
J2000 position of star is 05:13:11.5 +38:29:36
Equinox of date position of star is 05:15:01.6 +38:31:23
Star is 31 degrees from the moon. Moon is 86% illuminated.
Stellar brightness G=16.4, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.95 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 34% with SNR of 1.1 for the occulted depth (per occulted point)
Apparent velocity is 11.3 km/sec on the sky relative to the star, or, 11.9 arcsec/hr.
Position angle of asteroid motion is 15.1 degrees
The recommended exposure time corresponds to 10.7 km per image.
The 1-sigma error in the time of the event is 3.4 seconds.
The 1-sigma cross-track error in the shadow position is 2.2 km.
The sky-plane scale is 3405.0 km/arcsec.
Diameter estimates:
51.3 km assuming a 5% albedo, maximum of 4.6 sec for a central chord
20.9 km assuming a 30% albedo, maximum of 1.9 sec for a central chord
Cross-track diameter of 40.7 km used for deployment plan.
Star training set for 24451_00QS104, (2026/09/30 01:39UT) Object RA Dec mag sep mel Aldebaran 04:37:27.5 +16:33:39 0.8 23.45 22 3Iot Aur 04:58:44.4 +33:12:21 2.7 6.26 26 11Mu Aur 05:15:15.8 +38:30:48 4.9 0.05 31 PPM 069977 05:11:26.7 +38:43:03 7.8 0.73 31 11Mu Aur 05:15:15.8 +38:30:48 4.9 0.05 31 24451_00QS104 05:15:01.6 +38:31:23 15.7 31 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/09/30 01:39UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 23.45 22 3Iot Aur 04:56:59.6 +33:09:57 2.7 6.26 26 11Mu Aur 05:13:25.7 +38:29:02 4.9 0.05 31 PPM 069977 05:09:36.4 +38:41:08 7.8 0.73 31 11Mu Aur 05:13:25.7 +38:29:02 4.9 0.05 31 24451_00QS104 05:13:11.5 +38:29:36 15.7 31 Positions are for J2000