Occultation event with (5648) Axius, event index number 5109
Regions able to see the event: Europe
Geocentric closest approach at 2026/12/08 05:37:40 UTC
J2000 position of star is 05:46:08.0 +30:24:55
Equinox of date position of star is 05:47:51.9 +30:25:26
Star is 160 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=14.6
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 6.0 per integration for unocculted signal
Expected flux drop is 34% with SNR of 2.1 for the occulted depth (per occulted point)
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 21.8 arcsec/hr.
Position angle of asteroid motion is 105.2 degrees
The recommended exposure time corresponds to 14.1 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 34.0 km.
The sky-plane scale is 3091.9 km/arcsec.
Diameter estimates:
65.8 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
26.9 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 59.3 km used for deployment plan.
Star training set for 5648_Axius, (2026/12/08 05:38UT) Object RA Dec mag sep mel Aldebaran 04:37:28.2 +16:33:40 0.8 21.22 169 Alnath 05:27:59.8 +28:37:39 1.6 4.68 165 PPM 070700 05:42:20.6 +31:22:13 5.9 1.52 161 PPM 070810 05:47:20.2 +30:10:36 8.5 0.27 160 5648_Axius 05:47:51.9 +30:25:26 14.6 160 Positions are for equinox of date
Star training set for 5648_Axius, (2026/12/08 05:38UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 21.22 169 Alnath 05:26:17.6 +28:36:22 1.6 4.68 165 PPM 070700 05:40:35.9 +31:21:29 5.9 1.52 161 PPM 070810 05:45:36.5 +30:10:04 8.5 0.27 160 5648_Axius 05:46:08.0 +30:24:55 14.6 160 Positions are for J2000