Occultation event with (24451) 00QS104, event index number 3193
Regions able to see the event: NMexico
Geocentric closest approach at 2026/02/01 05:40:26 UTC
J2000 position of star is 02:04:22.2 +20:26:21
Equinox of date position of star is 02:05:49.2 +20:33:48
Star is 87 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 5.3 per integration for unocculted signal
Expected flux drop is 57% with SNR of 3.0 for the occulted depth (per occulted point)
Apparent velocity is 16.0 km/sec on the sky relative to the star, or, 16.4 arcsec/hr.
Position angle of asteroid motion is 65.2 degrees
The recommended exposure time corresponds to 9.6 km per image.
The 1-sigma error in the time of the event is 2.1 seconds.
The 1-sigma cross-track error in the shadow position is 14.0 km.
The sky-plane scale is 3510.7 km/arcsec.
Diameter estimates:
51.3 km assuming a 5% albedo, maximum of 3.2 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, (2026/02/01 05:40UT) Object RA Dec mag sep mel Aldebaran 04:37:25.2 +16:33:34 0.8 36.07 54 6Bet Ari 01:56:05.2 +20:56:04 2.6 2.31 89 15 Ari 02:12:04.7 +19:37:20 5.7 1.74 86 PPM 091360 02:07:43.1 +20:42:57 7.7 0.47 86 PPM 091305 02:03:58.0 +20:36:33 10.9 0.44 87 24451_00QS104 02:05:49.2 +20:33:48 15.7 87 Positions are for equinox of date
Star training set for 24451_00QS104, (2026/02/01 05:40UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 36.07 54 6Bet Ari 01:54:38.6 +20:48:26 2.6 2.31 89 15 Ari 02:10:37.8 +19:30:00 5.7 1.74 86 PPM 091360 02:06:15.9 +20:35:32 7.7 0.47 86 PPM 091305 02:02:31.1 +20:29:04 10.9 0.44 87 24451_00QS104 02:04:22.2 +20:26:21 15.7 87 Positions are for J2000