Occultation event with (24451) 00QS104, event index number 4500
Regions able to see the event: US,Europe
Geocentric closest approach at 2026/10/28 00:56:22 UTC
J2000 position of star is 05:09:24.7 +40:30:37
Equinox of date position of star is 05:11:17.1 +40:32:33
Star is 23 degrees from the moon. Moon is 95% illuminated.
Stellar brightness G=15.6, apparent brightess of occulting body is G=15.5
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 5.2 per integration for unocculted signal
Expected flux drop is 46% with SNR of 2.4 for the occulted depth (per occulted point)
Apparent velocity is 12.7 km/sec on the sky relative to the star, or, 14.4 arcsec/hr.
Position angle of asteroid motion is 131.9 degrees
The recommended exposure time corresponds to 10.1 km per image.
The 1-sigma error in the time of the event is 1.2 seconds.
The 1-sigma cross-track error in the shadow position is 34.7 km.
The sky-plane scale is 3165.9 km/arcsec.
Diameter estimates:
51.3 km assuming a 5% albedo, maximum of 4.0 sec for a central chord
20.9 km assuming a 30% albedo, maximum of 1.7 sec for a central chord
Cross-track diameter of 40.7 km used for deployment plan.
Star training set for 24451_00QS104, (2026/10/28 00:56UT) Object RA Dec mag sep mel Aldebaran 04:37:27.8 +16:33:40 0.8 25.07 14 3Iot Aur 04:58:44.7 +33:12:21 2.7 7.75 17 10Eta Aur 05:08:24.0 +41:16:05 3.2 0.91 23 PPM 047782 05:11:51.8 +40:11:03 8.5 0.37 23 PPM 047787 05:12:10.3 +40:41:28 8.9 0.22 23 24451_00QS104 05:11:17.1 +40:32:33 15.5 24 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/10/28 00:56UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 25.07 14 3Iot Aur 04:56:59.6 +33:09:57 2.7 7.75 17 10Eta Aur 05:06:31.0 +41:14:02 3.2 0.91 23 PPM 047782 05:09:59.8 +40:09:09 8.5 0.37 23 PPM 047787 05:10:17.7 +40:39:35 8.9 0.22 23 24451_00QS104 05:09:24.7 +40:30:37 15.5 23 Positions are for J2000