Occultation event with (24451) 00QS104, event index number 5142
Regions able to see the event: Australia
Geocentric closest approach at 2026/12/09 17:53:56 UTC
J2000 position of star is 04:42:21.7 +42:03:18
Equinox of date position of star is 04:44:15.2 +42:06:15
Star is 161 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=16.2, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 28% with SNR of 0.8 for the occulted depth (per occulted point)
Apparent velocity is 17.6 km/sec on the sky relative to the star, or, 20.9 arcsec/hr.
Position angle of asteroid motion is 90.8 degrees
The recommended exposure time corresponds to 13.2 km per image.
The 1-sigma error in the time of the event is 0.8 seconds.
The 1-sigma cross-track error in the shadow position is 35.7 km.
The sky-plane scale is 3035.3 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, (2026/12/09 17:54UT) Object RA Dec mag sep mel Aldebaran 04:37:28.2 +16:33:40 0.8 25.58 162 3Iot Aur 04:58:45.1 +33:12:22 2.7 9.35 169 59 Per 04:44:49.4 +43:24:49 5.2 1.31 161 PPM 047277 04:43:31.1 +42:09:54 7.7 0.15 161 24451_00QS104 04:44:15.2 +42:06:15 15.2 162 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/12/09 17:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 25.58 162 3Iot Aur 04:56:59.6 +33:09:57 2.7 9.35 169 59 Per 04:42:54.4 +43:21:53 5.2 1.31 161 PPM 047277 04:41:37.6 +42:06:55 7.7 0.15 161 24451_00QS104 04:42:21.7 +42:03:18 15.2 161 Positions are for J2000