Occultation event with (24451) 00QS104, event index number 4201
Regions able to see the event: Australia
Geocentric closest approach at 2026/09/07 20:53:45 UTC
J2000 position of star is 05:07:02.1 +36:47:13
Equinox of date position of star is 05:08:50.1 +36:49:14
Star is 44 degrees from the moon. Moon is 13% illuminated.
Stellar brightness G=13.4, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.16 seconds with the standard RECON-QHY system.
SNR of 9.8 per integration for unocculted signal
Expected flux drop is 90% with SNR of 8.8 for the occulted depth (per occulted point)
Apparent velocity is 17.6 km/sec on the sky relative to the star, or, 17.4 arcsec/hr.
Position angle of asteroid motion is 48.8 degrees
The recommended exposure time corresponds to 2.8 km per image.
The 1-sigma error in the time of the event is 1.9 seconds.
The 1-sigma cross-track error in the shadow position is 18.3 km.
The sky-plane scale is 3629.4 km/arcsec.
Diameter estimates:
51.3 km assuming a 5% albedo, maximum of 2.9 sec for a central chord
20.9 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 40.7 km used for deployment plan.
Star training set for 24451_00QS104, (2026/09/07 20:54UT) Object RA Dec mag sep mel Aldebaran 04:37:27.3 +16:33:39 0.8 21.42 53 3Iot Aur 04:58:44.1 +33:12:21 2.7 4.16 46 PPM 070048 05:15:05.9 +37:21:57 6.5 1.36 43 PPM 069986 05:11:44.8 +37:02:10 8.3 0.62 44 PPM 069930 05:09:13.0 +36:54:23 9.1 0.11 44 24451_00QS104 05:08:50.1 +36:49:14 15.9 44 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/09/07 20:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 21.42 53 3Iot Aur 04:56:59.6 +33:09:57 2.7 4.16 46 PPM 070048 05:13:17.2 +37:20:11 6.5 1.36 43 PPM 069986 05:09:56.4 +37:00:16 8.3 0.62 44 PPM 069930 05:07:24.8 +36:52:24 9.1 0.11 44 24451_00QS104 05:07:02.1 +36:47:13 15.9 44 Positions are for J2000