Occultation event with (16667) 93XM1, event index number 4923
Regions able to see the event: Australia
Geocentric closest approach at 2026/11/28 17:15:25 UTC
J2000 position of star is 05:59:08.6 +19:27:18
Equinox of date position of star is 06:00:44.0 +19:27:18
Star is 34 degrees from the moon. Moon is 77% illuminated.
Stellar brightness G=14.8, apparent brightess of occulting body is G=15.8
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 7.7 per integration for unocculted signal
Expected flux drop is 71% with SNR of 5.5 for the occulted depth (per occulted point)
Apparent velocity is 16.2 km/sec on the sky relative to the star, or, 18.3 arcsec/hr.
Position angle of asteroid motion is 99.8 degrees
The recommended exposure time corresponds to 8.1 km per image.
The 1-sigma error in the time of the event is 0.3 seconds.
The 1-sigma cross-track error in the shadow position is 36.9 km.
The sky-plane scale is 3197.5 km/arcsec.
Diameter estimates:
42.3 km assuming a 5% albedo, maximum of 2.6 sec for a central chord
17.3 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 35.4 km used for deployment plan.
Star training set for 16667_93XM1, (2026/11/28 17:15UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.8 +07:24:35 0.4 12.09 39 Alhena 06:39:16.0 +16:22:26 1.9 9.67 26 57 Ori 05:56:32.2 +19:45:08 5.6 1.03 35 PPM 121713 06:01:05.2 +19:46:45 8.4 0.33 34 PPM 121696 06:00:34.1 +19:33:25 10.0 0.11 34 16667_93XM1 06:00:44.0 +19:27:18 15.8 34 Positions are for equinox of date
Star training set for 16667_93XM1, (2026/11/28 17:15UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 12.09 39 Alhena 06:37:42.8 +16:23:56 1.9 9.67 26 57 Ori 05:54:56.6 +19:44:58 5.6 1.03 35 PPM 121713 05:59:29.5 +19:46:46 8.4 0.33 34 PPM 121696 05:58:58.6 +19:33:24 10.0 0.11 34 16667_93XM1 05:59:08.6 +19:27:18 15.8 34 Positions are for J2000