Occultation event with (5648) Axius, event index number 4383
Regions able to see the event: Senegal
Geocentric closest approach at 2026/10/12 03:36:03 UTC
J2000 position of star is 06:05:29.1 +27:42:07
Equinox of date position of star is 06:07:10.2 +27:41:52
Star is 125 degrees from the moon. Moon is 3% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=15.2
Use an exposure time of 1.65 seconds with the standard RECON-QHY system.
SNR of 9.8 per integration for unocculted signal
Expected flux drop is 46% with SNR of 4.5 for the occulted depth (per occulted point)
Apparent velocity is 7.2 km/sec on the sky relative to the star, or, 7.4 arcsec/hr.
Position angle of asteroid motion is 17.4 degrees
The recommended exposure time corresponds to 11.8 km per image.
The 1-sigma error in the time of the event is 4.8 seconds.
The 1-sigma cross-track error in the shadow position is 2.7 km.
The sky-plane scale is 3461.0 km/arcsec.
Diameter estimates:
65.8 km assuming a 5% albedo, maximum of 9.2 sec for a central chord
26.9 km assuming a 30% albedo, maximum of 3.7 sec for a central chord
Cross-track diameter of 59.3 km used for deployment plan.
Star training set for 5648_Axius, (2026/10/12 03:36UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.3 +07:24:35 0.4 20.44 124 Alnath 05:27:59.2 +28:37:39 1.6 8.68 134 PPM 095226 06:02:41.5 +27:34:17 6.0 1.00 126 PPM 095320 06:05:42.1 +27:34:01 8.1 0.35 126 PPM 095350 06:06:42.9 +27:42:35 9.7 0.10 126 5648_Axius 06:07:10.2 +27:41:52 15.2 125 Positions are for equinox of date
Star training set for 5648_Axius, (2026/10/12 03:36UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 20.44 124 Alnath 05:26:17.6 +28:36:22 1.6 8.68 134 PPM 095226 06:01:00.4 +27:34:21 6.0 1.00 126 PPM 095320 06:04:01.0 +27:34:12 8.1 0.35 126 PPM 095350 06:05:01.8 +27:42:48 9.7 0.10 126 5648_Axius 06:05:29.1 +27:42:07 15.2 125 Positions are for J2000