Occultation event with (24451) 00QS104, event index number 4760
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/18 23:20:08 UTC
J2000 position of star is 04:57:35.1 +41:38:47
Equinox of date position of star is 04:59:28.6 +41:41:10
Star is 93 degrees from the moon. Moon is 65% illuminated.
Stellar brightness G=16.1, apparent brightess of occulting body is G=15.3
Use an exposure time of 0.65 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 32% with SNR of 0.9 for the occulted depth (per occulted point)
Apparent velocity is 16.7 km/sec on the sky relative to the star, or, 19.7 arcsec/hr.
Position angle of asteroid motion is 106.3 degrees
The recommended exposure time corresponds to 10.9 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 37.6 km.
The sky-plane scale is 3053.9 km/arcsec.
Diameter estimates:
51.3 km assuming a 5% albedo, maximum of 3.1 sec for a central chord
20.9 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 40.7 km used for deployment plan.
Star training set for 24451_00QS104, (2026/11/18 23:20UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 25.57 86 3Iot Aur 04:58:44.9 +33:12:22 2.7 8.48 93 8Zet Aur 05:04:21.8 +41:06:44 3.8 1.08 94 PPM 047575 05:01:36.5 +41:54:41 7.4 0.46 94 PPM 047556 05:00:46.7 +41:28:33 8.9 0.32 94 PPM 047537 04:59:34.6 +41:57:49 10.9 0.28 94 24451_00QS104 04:59:28.6 +41:41:10 15.3 94 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/11/18 23:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 25.57 86 3Iot Aur 04:56:59.6 +33:09:57 2.7 8.48 93 8Zet Aur 05:02:28.7 +41:04:32 3.8 1.08 94 PPM 047575 04:59:42.6 +41:52:23 7.4 0.46 94 PPM 047556 04:58:53.4 +41:26:14 8.9 0.32 94 PPM 047537 04:57:40.8 +41:55:27 10.9 0.28 94 24451_00QS104 04:57:35.1 +41:38:47 15.3 93 Positions are for J2000