Occultation event with (16956) 98MQ11, event index number 4657
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/11/13 00:37:55 UTC
J2000 position of star is 04:48:21.5 -14:08:24
Equinox of date position of star is 04:49:35.5 -14:05:39
Star is 134 degrees from the moon. Moon is 13% illuminated.
Stellar brightness G=15.8, apparent brightess of occulting body is G=15.8
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 3.8 per integration for unocculted signal
Expected flux drop is 49% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 15.9 km/sec on the sky relative to the star, or, 18.6 arcsec/hr.
Position angle of asteroid motion is 71.8 degrees
The recommended exposure time corresponds to 9.6 km per image.
The 1-sigma error in the time of the event is 1.5 seconds.
The 1-sigma cross-track error in the shadow position is 31.2 km.
The sky-plane scale is 3089.0 km/arcsec.
Diameter estimates:
42.7 km assuming a 5% albedo, maximum of 2.7 sec for a central chord
17.4 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 38.6 km used for deployment plan.
Star training set for 16956_98MQ11, (2026/11/13 00:38UT) Object RA Dec mag sep mel Rigel 05:15:49.8 -08:10:21 0.1 8.74 142 67Bet Eri 05:09:10.3 -05:03:13 2.8 10.25 144 60 Eri 04:51:24.3 -16:10:20 4.5 2.12 132 PPM 214807 04:48:02.1 -13:32:05 8.4 0.68 134 PPM 214829 04:48:58.5 -13:43:31 9.5 0.40 134 16956_98MQ11 04:49:35.5 -14:05:39 15.8 134 Positions are for equinox of date
Star training set for 16956_98MQ11, (2026/11/13 00:38UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 8.74 142 67Bet Eri 05:07:50.8 -05:05:13 2.8 10.25 144 60 Eri 04:50:11.7 -16:13:00 4.5 2.12 132 PPM 214807 04:46:47.7 -13:34:53 8.4 0.68 134 PPM 214829 04:47:44.3 -13:46:17 9.5 0.40 134 16956_98MQ11 04:48:21.5 -14:08:24 15.8 134 Positions are for J2000