Occultation event with (16667) 93XM1, event index number 5006
Regions able to see the event: Australia
Geocentric closest approach at 2026/12/03 12:20:16 UTC
J2000 position of star is 05:56:36.8 +19:33:24
Equinox of date position of star is 05:58:12.4 +19:33:30
Star is 99 degrees from the moon. Moon is 27% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 4.4 per integration for unocculted signal
Expected flux drop is 56% with SNR of 2.5 for the occulted depth (per occulted point)
Apparent velocity is 17.2 km/sec on the sky relative to the star, or, 19.5 arcsec/hr.
Position angle of asteroid motion is 99.6 degrees
The recommended exposure time corresponds to 8.6 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 36.6 km.
The sky-plane scale is 3182.9 km/arcsec.
Diameter estimates:
42.3 km assuming a 5% albedo, maximum of 2.5 sec for a central chord
17.3 km assuming a 30% albedo, maximum of 1.0 sec for a central chord
Cross-track diameter of 35.4 km used for deployment plan.
Star training set for 16667_93XM1, (2026/12/03 12:20UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.8 +07:24:35 0.4 12.15 99 Alhena 06:39:16.0 +16:22:26 1.9 10.27 89 57 Ori 05:56:32.3 +19:45:08 5.6 0.44 100 PPM 121641 05:58:43.6 +19:13:05 8.5 0.36 99 PPM 121621 05:58:12.6 +19:44:39 9.1 0.19 99 16667_93XM1 05:58:12.4 +19:33:30 15.7 99 Positions are for equinox of date
Star training set for 16667_93XM1, (2026/12/03 12:20UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 12.15 99 Alhena 06:37:42.8 +16:23:56 1.9 10.27 89 57 Ori 05:54:56.6 +19:44:58 5.6 0.44 100 PPM 121641 05:57:08.3 +19:13:00 8.5 0.36 99 PPM 121621 05:56:36.9 +19:44:33 9.1 0.19 99 16667_93XM1 05:56:36.8 +19:33:24 15.7 99 Positions are for J2000