Occultation event with (4792) Lykaon, event index number 3335
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/02 22:51:16 UTC
J2000 position of star is 02:23:21.8 +11:54:09
Equinox of date position of star is 02:24:46.6 +12:01:13
Star is 118 degrees from the moon. Moon is 100% illuminated.
Stellar brightness G=13.6, apparent brightess of occulting body is G=15.8
Use an exposure time of 0.18 seconds with the standard RECON-QHY system.
SNR of 9.6 per integration for unocculted signal
Expected flux drop is 89% with SNR of 8.5 for the occulted depth (per occulted point)
Apparent velocity is 30.3 km/sec on the sky relative to the star, or, 27.5 arcsec/hr.
Position angle of asteroid motion is 65.5 degrees
The recommended exposure time corresponds to 5.5 km per image.
The 1-sigma error in the time of the event is 0.9 seconds.
The 1-sigma cross-track error in the shadow position is 21.0 km.
The sky-plane scale is 3967.6 km/arcsec.
Diameter estimates:
55.2 km assuming a 5% albedo, maximum of 1.8 sec for a central chord
22.5 km assuming a 30% albedo, maximum of 0.7 sec for a central chord
Cross-track diameter of 50.9 km used for deployment plan.
Star training set for 4792_Lykaon, (2026/03/02 22:51UT) Object RA Dec mag sep mel Aldebaran 04:37:25.5 +16:33:35 0.8 32.42 86 6Bet Ari 01:56:05.5 +20:56:05 2.6 11.25 121 24Xi Ari 02:26:13.5 +10:43:40 5.5 1.34 118 PPM 118217 02:26:58.7 +12:05:10 7.7 0.54 118 PPM 118186 02:25:25.8 +12:01:45 9.6 0.16 118 4792_Lykaon 02:24:46.6 +12:01:13 15.8 118 Positions are for equinox of date
Star training set for 4792_Lykaon, (2026/03/02 22:51UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 32.42 86 6Bet Ari 01:54:38.6 +20:48:26 2.6 11.25 121 24Xi Ari 02:24:49.1 +10:36:38 5.5 1.34 118 PPM 118217 02:25:33.8 +11:58:09 7.7 0.54 118 PPM 118186 02:24:00.9 +11:54:42 9.6 0.16 118 4792_Lykaon 02:23:21.8 +11:54:09 15.8 118 Positions are for J2000