Occultation event with (4792) Lykaon, event index number 4700
Regions able to see the event: Australia
Geocentric closest approach at 2026/11/15 12:04:13 UTC
J2000 position of star is 04:45:49.2 +23:49:57
Equinox of date position of star is 04:47:26.9 +23:52:46
Star is 132 degrees from the moon. Moon is 32% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=15.0
Use an exposure time of 1.20 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 20% with SNR of 0.6 for the occulted depth (per occulted point)
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 18.4 arcsec/hr.
Position angle of asteroid motion is 91.4 degrees
The recommended exposure time corresponds to 18.7 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 34.2 km.
The sky-plane scale is 3049.4 km/arcsec.
Diameter estimates:
55.2 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
22.5 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 50.9 km used for deployment plan.
Star training set for 4792_Lykaon, (2026/11/15 12:04UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 7.68 128 3Iot Aur 04:58:44.9 +33:12:22 2.7 9.65 135 PPM 093742 04:47:20.0 +23:40:31 6.1 0.21 132 PPM 093751 04:48:00.3 +23:43:19 9.6 0.20 132 4792_Lykaon 04:47:26.9 +23:52:46 15.0 132 Positions are for equinox of date
Star training set for 4792_Lykaon, (2026/11/15 12:04UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 7.68 128 3Iot Aur 04:56:59.6 +33:09:57 2.7 9.65 135 PPM 093742 04:45:42.5 +23:37:41 6.1 0.21 132 PPM 093751 04:46:22.7 +23:40:30 9.6 0.20 132 4792_Lykaon 04:45:49.2 +23:49:57 15.0 132 Positions are for J2000