Occultation event with (5648) Axius, event index number 4790
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/11/21 00:11:22 UTC
J2000 position of star is 05:56:16.9 +29:40:13
Equinox of date position of star is 05:58:00.0 +29:40:20
Star is 79 degrees from the moon. Moon is 83% illuminated.
Stellar brightness G=16.4, apparent brightess of occulting body is G=14.8
Use an exposure time of 1.05 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 20% with SNR of 0.6 for the occulted depth (per occulted point)
Apparent velocity is 15.7 km/sec on the sky relative to the star, or, 18.0 arcsec/hr.
Position angle of asteroid motion is 113.2 degrees
The recommended exposure time corresponds to 16.5 km per image.
The 1-sigma error in the time of the event is 0.1 seconds.
The 1-sigma cross-track error in the shadow position is 34.3 km.
The sky-plane scale is 3145.7 km/arcsec.
Diameter estimates:
65.8 km assuming a 5% albedo, maximum of 4.2 sec for a central chord
26.9 km assuming a 30% albedo, maximum of 1.7 sec for a central chord
Cross-track diameter of 59.3 km used for deployment plan.
Star training set for 5648_Axius, (2026/11/21 00:11UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.7 +07:24:35 0.4 22.26 80 Alnath 05:27:59.6 +28:37:39 1.6 6.63 72 PPM 095117 05:58:16.3 +28:56:38 6.5 0.73 79 PPM 095161 06:00:07.2 +29:37:39 8.2 0.46 79 PPM 095116 05:58:14.1 +29:45:13 8.9 0.10 79 5648_Axius 05:58:00.0 +29:40:20 14.8 79 Positions are for equinox of date
Star training set for 5648_Axius, (2026/11/21 00:11UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 22.26 80 Alnath 05:26:17.6 +28:36:22 1.6 6.63 72 PPM 095117 05:56:33.8 +28:56:32 6.5 0.73 79 PPM 095161 05:58:24.1 +29:37:37 8.2 0.46 79 PPM 095116 05:56:30.8 +29:45:07 8.9 0.10 79 5648_Axius 05:56:16.9 +29:40:13 14.8 79 Positions are for J2000