Occultation event with (16667) 93XM1, event index number 5035
Regions able to see the event: Europe
Geocentric closest approach at 2026/12/04 22:24:00 UTC
J2000 position of star is 05:55:50.1 +19:35:13
Equinox of date position of star is 05:57:25.7 +19:35:21
Star is 117 degrees from the moon. Moon is 15% illuminated.
Stellar brightness G=15.7, 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 3.6 per integration for unocculted signal
Expected flux drop is 50% with SNR of 1.8 for the occulted depth (per occulted point)
Apparent velocity is 17.5 km/sec on the sky relative to the star, or, 19.8 arcsec/hr.
Position angle of asteroid motion is 99.6 degrees
The recommended exposure time corresponds to 8.7 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 36.5 km.
The sky-plane scale is 3179.5 km/arcsec.
Diameter estimates:
42.3 km assuming a 5% albedo, maximum of 2.4 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, (2026/12/04 22:24UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.8 +07:24:35 0.4 12.18 115 Alhena 06:39:16.0 +16:22:26 1.9 10.45 107 57 Ori 05:56:32.3 +19:45:08 5.6 0.27 117 PPM 121584 05:56:35.3 +19:36:26 8.4 0.20 117 16667_93XM1 05:57:25.7 +19:35:21 15.7 117 Positions are for equinox of date
Star training set for 16667_93XM1, (2026/12/04 22:24UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 12.18 115 Alhena 06:37:42.8 +16:23:56 1.9 10.45 107 57 Ori 05:54:56.6 +19:44:58 5.6 0.27 117 PPM 121584 05:54:59.6 +19:36:16 8.4 0.20 117 16667_93XM1 05:55:50.1 +19:35:13 15.7 117 Positions are for J2000