Occultation event with (24451) 00QS104, event index number 5120
Regions able to see the event: Europe
Geocentric closest approach at 2026/12/08 21:53:08 UTC
J2000 position of star is 04:42:59.2 +42:03:08
Equinox of date position of star is 04:44:52.8 +42:06:04
Star is 165 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.55 seconds with the standard RECON-QHY system.
SNR of 5.5 per integration for unocculted signal
Expected flux drop is 48% with SNR of 2.6 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 91.4 degrees
The recommended exposure time corresponds to 9.7 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 3034.3 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, (2026/12/08 21:53UT) Object RA Dec mag sep mel Aldebaran 04:37:28.2 +16:33:40 0.8 25.59 168 3Iot Aur 04:58:45.1 +33:12:22 2.7 9.31 174 PPM 047304 04:46:05.3 +40:50:03 6.0 1.29 166 PPM 047277 04:43:31.1 +42:09:54 7.7 0.26 165 PPM 047300 04:45:54.1 +42:01:53 9.4 0.20 165 24451_00QS104 04:44:52.8 +42:06:04 15.2 165 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/12/08 21:53UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 25.59 168 3Iot Aur 04:56:59.6 +33:09:57 2.7 9.31 174 PPM 047304 04:44:13.0 +40:47:10 6.0 1.29 166 PPM 047277 04:41:37.6 +42:06:55 7.7 0.26 165 PPM 047300 04:44:00.5 +41:59:00 9.4 0.20 165 24451_00QS104 04:42:59.2 +42:03:08 15.2 165 Positions are for J2000