Occultation event with (5648) Axius, event index number 4842
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/23 21:56:07 UTC
J2000 position of star is 05:54:45.5 +29:48:22
Equinox of date position of star is 05:56:28.8 +29:48:32
Star is 37 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=14.8
Use an exposure time of 1.30 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 17% with SNR of 0.5 for the occulted depth (per occulted point)
Apparent velocity is 16.4 km/sec on the sky relative to the star, or, 18.9 arcsec/hr.
Position angle of asteroid motion is 111.6 degrees
The recommended exposure time corresponds to 21.4 km per image.
The 1-sigma error in the time of the event is 0.0 seconds.
The 1-sigma cross-track error in the shadow position is 35.3 km.
The sky-plane scale is 3132.3 km/arcsec.
Diameter estimates:
65.8 km assuming a 5% albedo, maximum of 4.0 sec for a central chord
26.9 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 59.3 km used for deployment plan.
Star training set for 5648_Axius, (2026/11/23 21:56UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.7 +07:24:35 0.4 22.40 42 Alnath 05:27:59.7 +28:37:39 1.6 6.33 31 PPM 095117 05:58:16.3 +28:56:38 6.5 0.95 37 PPM 095161 06:00:07.2 +29:37:39 8.2 0.81 38 PPM 070967 05:55:08.3 +30:00:34 10.0 0.35 37 PPM 095084 05:57:15.7 +29:38:48 10.2 0.23 37 5648_Axius 05:56:28.8 +29:48:32 14.8 37 Positions are for equinox of date
Star training set for 5648_Axius, (2026/11/23 21:56UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 22.40 42 Alnath 05:26:17.6 +28:36:22 1.6 6.33 31 PPM 095117 05:56:33.8 +28:56:32 6.5 0.95 37 PPM 095161 05:58:24.1 +29:37:37 8.2 0.81 38 PPM 070967 05:53:24.9 +30:00:20 10.0 0.35 37 PPM 095084 05:55:32.5 +29:38:39 10.2 0.23 37 5648_Axius 05:54:45.5 +29:48:22 14.8 37 Positions are for J2000