Occultation event with (13060) 91EJ, event index number 4813
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/11/22 07:06:04 UTC
J2000 position of star is 12:18:22.0 -24:33:34
Equinox of date position of star is 12:19:46.0 -24:42:31
Star is 159 degrees from the moon. Moon is 92% illuminated.
Stellar brightness G=14.9, apparent brightess of occulting body is G=17.0
Use an exposure time of 0.25 seconds with the standard RECON-QHY system.
SNR of 4.4 per integration for unocculted signal
Expected flux drop is 87% with SNR of 3.8 for the occulted depth (per occulted point)
Apparent velocity is 33.3 km/sec on the sky relative to the star, or, 26.0 arcsec/hr.
Position angle of asteroid motion is 127.9 degrees
The recommended exposure time corresponds to 8.3 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 19.2 km.
The sky-plane scale is 4617.1 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, maximum of 1.3 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 0.5 sec for a central chord
Cross-track diameter of 36.1 km used for deployment plan.
Star training set for 13060_91EJ, (2026/11/22 07:06UT) Object RA Dec mag sep mel Spica 13:26:36.8 -11:18:03 1.0 20.75 175 9Bet Crv 12:35:48.3 -23:32:42 2.6 3.84 163 3 Crv 12:12:27.3 -23:45:07 5.4 1.92 158 PPM 260132 12:19:19.5 -24:09:45 7.2 0.56 159 PPM 260119 12:18:55.6 -24:41:19 9.6 0.19 159 13060_91EJ 12:19:46.0 -24:42:31 17.0 159 Positions are for equinox of date
Star training set for 13060_91EJ, (2026/11/22 07:06UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.75 175 9Bet Crv 12:34:23.2 -23:23:50 2.6 3.84 163 3 Crv 12:11:03.8 -23:36:09 5.4 1.92 158 PPM 260132 12:17:55.5 -24:00:48 7.2 0.56 159 PPM 260119 12:17:31.5 -24:32:22 9.6 0.19 159 13060_91EJ 12:18:22.0 -24:33:34 17.0 159 Positions are for J2000