Occultation event with (32499) 00YS11, event index number 4942
Regions able to see the event: US,NMexico
Geocentric closest approach at 2026/11/29 13:10:06 UTC
J2000 position of star is 04:58:32.6 +24:47:54
Equinox of date position of star is 05:00:11.4 +24:50:15
Star is 59 degrees from the moon. Moon is 69% illuminated.
Stellar brightness G=15.2, apparent brightess of occulting body is G=15.6
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 5.7 per integration for unocculted signal
Expected flux drop is 59% with SNR of 3.4 for the occulted depth (per occulted point)
Apparent velocity is 18.6 km/sec on the sky relative to the star, or, 20.5 arcsec/hr.
Position angle of asteroid motion is 95.3 degrees
The recommended exposure time corresponds to 9.3 km per image.
The 1-sigma error in the time of the event is 0.5 seconds.
The 1-sigma cross-track error in the shadow position is 31.0 km.
The sky-plane scale is 3260.3 km/arcsec.
Diameter estimates:
45.1 km assuming a 5% albedo, maximum of 2.4 sec for a central chord
18.4 km assuming a 30% albedo, maximum of 1.0 sec for a central chord
Cross-track diameter of 38.9 km used for deployment plan.
Star training set for 32499_00YS11, (2026/11/29 13:10UT) Object RA Dec mag sep mel Aldebaran 04:37:28.1 +16:33:40 0.8 9.83 66 Alnath 05:27:59.7 +28:37:39 1.6 7.27 53 98 Tau 04:59:48.4 +25:05:22 5.8 0.27 59 PPM 093936 05:00:31.3 +24:32:05 8.4 0.31 59 98 Tau 04:59:48.4 +25:05:22 5.8 0.27 59 32499_00YS11 05:00:11.4 +24:50:15 15.6 59 Positions are for equinox of date
Star training set for 32499_00YS11, (2026/11/29 13:10UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 9.83 66 Alnath 05:26:17.6 +28:36:22 1.6 7.27 53 98 Tau 04:58:09.4 +25:03:00 5.8 0.27 59 PPM 093936 04:58:52.8 +24:29:45 8.4 0.31 59 98 Tau 04:58:09.4 +25:03:00 5.8 0.27 59 32499_00YS11 04:58:32.6 +24:47:54 15.6 59 Positions are for J2000