Occultation event with (4792) Lykaon, event index number 4563
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/11/04 08:35:26 UTC
J2000 position of star is 04:51:16.5 +23:46:28
Equinox of date position of star is 04:52:54.2 +23:49:05
Star is 89 degrees from the moon. Moon is 24% illuminated.
Stellar brightness G=15.1, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.95 seconds with the standard RECON-QHY system.
SNR of 9.0 per integration for unocculted signal
Expected flux drop is 52% with SNR of 4.7 for the occulted depth (per occulted point)
Apparent velocity is 12.9 km/sec on the sky relative to the star, or, 14.9 arcsec/hr.
Position angle of asteroid motion is 94.2 degrees
The recommended exposure time corresponds to 12.2 km per image.
The 1-sigma error in the time of the event is 0.6 seconds.
The 1-sigma cross-track error in the shadow position is 34.5 km.
The sky-plane scale is 3099.6 km/arcsec.
Diameter estimates:
55.2 km assuming a 5% albedo, maximum of 4.3 sec for a central chord
22.5 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 50.9 km used for deployment plan.
Star training set for 4792_Lykaon, (2026/11/04 08:35UT) Object RA Dec mag sep mel Aldebaran 04:37:27.8 +16:33:40 0.8 8.11 94 Alnath 05:27:59.5 +28:37:39 1.6 9.22 81 PPM 093742 04:47:19.9 +23:40:31 6.1 1.28 90 PPM 093861 04:55:21.6 +23:35:47 8.5 0.60 89 PPM 093837 04:54:00.2 +23:47:40 9.9 0.25 89 4792_Lykaon 04:52:54.2 +23:49:05 15.2 89 Positions are for equinox of date
Star training set for 4792_Lykaon, (2026/11/04 08:35UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 8.11 94 Alnath 05:26:17.6 +28:36:22 1.6 9.22 81 PPM 093742 04:45:42.5 +23:37:41 6.1 1.28 90 PPM 093861 04:53:44.0 +23:33:16 8.5 0.60 89 PPM 093837 04:52:22.5 +23:45:06 9.9 0.25 89 4792_Lykaon 04:51:16.5 +23:46:28 15.2 89 Positions are for J2000