Occultation event with (5648) Axius, event index number 5080
Regions able to see the event: Europe
Geocentric closest approach at 2026/12/06 23:24:40 UTC
J2000 position of star is 05:46:57.0 +30:22:00
Equinox of date position of star is 05:48:40.8 +30:22:29
Star is 145 degrees from the moon. Moon is 4% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=14.6
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 15% with SNR of 0.5 for the occulted depth (per occulted point)
Apparent velocity is 18.6 km/sec on the sky relative to the star, or, 21.7 arcsec/hr.
Position angle of asteroid motion is 105.7 degrees
The recommended exposure time corresponds to 24.2 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 34.3 km.
The sky-plane scale is 3093.7 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, (2026/12/06 23:25UT) Object RA Dec mag sep mel Aldebaran 04:37:28.2 +16:33:40 0.8 21.33 159 Alnath 05:27:59.8 +28:37:39 1.6 4.83 150 PPM 070700 05:42:20.5 +31:22:13 5.9 1.69 146 PPM 070810 05:47:20.2 +30:10:36 8.5 0.35 145 PPM 070837 05:48:54.3 +30:39:49 9.4 0.29 145 PPM 070853 05:49:43.5 +30:15:46 10.8 0.25 145 5648_Axius 05:48:40.8 +30:22:29 14.6 145 Positions are for equinox of date
Star training set for 5648_Axius, (2026/12/06 23:25UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 21.33 159 Alnath 05:26:17.6 +28:36:22 1.6 4.83 150 PPM 070700 05:40:35.9 +31:21:29 5.9 1.69 146 PPM 070810 05:45:36.5 +30:10:04 8.5 0.35 145 PPM 070837 05:47:10.2 +30:39:21 9.4 0.29 145 PPM 070853 05:47:59.7 +30:15:19 10.8 0.25 145 5648_Axius 05:46:57.0 +30:22:00 14.6 145 Positions are for J2000