Occultation event with (24451) 00QS104, event index number 4029
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/08/17 03:49:53 UTC
J2000 position of star is 04:54:45.6 +35:08:50
Equinox of date position of star is 04:56:31.6 +35:11:18
Star is 124 degrees from the moon. Moon is 22% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.40 seconds with the standard RECON-QHY system.
SNR of 3.7 per integration for unocculted signal
Expected flux drop is 60% with SNR of 2.2 for the occulted depth (per occulted point)
Apparent velocity is 25.3 km/sec on the sky relative to the star, or, 23.7 arcsec/hr.
Position angle of asteroid motion is 61.8 degrees
The recommended exposure time corresponds to 10.1 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 23.9 km.
The sky-plane scale is 3845.5 km/arcsec.
Diameter estimates:
51.3 km assuming a 5% albedo, maximum of 2.0 sec for a central chord
20.9 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 40.7 km used for deployment plan.
Star training set for 24451_00QS104, (2026/08/17 03:50UT) Object RA Dec mag sep mel Aldebaran 04:37:27.1 +16:33:38 0.8 19.11 130 3Iot Aur 04:58:43.9 +33:12:20 2.7 2.03 124 PPM 069764 04:58:06.9 +36:12:31 6.0 1.07 124 PPM 069716 04:54:42.8 +35:50:42 8.1 0.75 124 PPM 069720 04:54:52.7 +34:44:52 8.8 0.56 125 PPM 069733 04:55:56.3 +34:54:27 10.4 0.31 124 24451_00QS104 04:56:31.6 +35:11:18 16.0 124 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/08/17 03:50UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 19.11 130 3Iot Aur 04:56:59.6 +33:09:57 2.7 2.03 124 PPM 069764 04:56:20.0 +36:10:07 6.0 1.07 124 PPM 069716 04:52:56.3 +35:48:10 8.1 0.75 124 PPM 069720 04:53:07.1 +34:42:21 8.8 0.56 125 PPM 069733 04:54:10.6 +34:51:58 10.4 0.31 124 24451_00QS104 04:54:45.6 +35:08:50 16.0 124 Positions are for J2000