Occultation event with (22014) 99XQ96, event index number 3647
Regions able to see the event: Australia
Geocentric closest approach at 2026/04/17 08:56:59 UTC
J2000 position of star is 10:57:04.7 -31:16:24
Equinox of date position of star is 10:58:19.8 -31:24:51
Star is 141 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.2
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 23% with SNR of 0.7 for the occulted depth (per occulted point)
Apparent velocity is 15.7 km/sec on the sky relative to the star, or, 18.5 arcsec/hr.
Position angle of asteroid motion is 151.1 degrees
The recommended exposure time corresponds to 18.8 km per image.
The 1-sigma error in the time of the event is 2.6 seconds.
The 1-sigma cross-track error in the shadow position is 3.8 km.
The sky-plane scale is 3060.6 km/arcsec.
Diameter estimates:
54.5 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
22.2 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 39.5 km used for deployment plan.
Star training set for 22014_99XQ96, (2026/04/17 08:57UT) Object RA Dec mag sep mel Bet Cru 12:49:16.6 -59:49:55 1.3 33.88 133 Mu Vel 10:47:54.6 -49:33:34 2.8 18.25 131 PPM 288405 11:01:55.9 -31:58:49 6.0 0.95 141 PPM 288319 10:58:07.2 -31:20:45 7.7 0.08 141 PPM 288324 10:58:22.1 -31:28:31 9.7 0.06 141 22014_99XQ96 10:58:19.8 -31:24:51 15.2 141 Positions are for equinox of date
Star training set for 22014_99XQ96, (2026/04/17 08:57UT) Object RA Dec mag sep mel Bet Cru 12:47:43.1 -59:41:20 1.3 33.88 133 Mu Vel 10:46:46.5 -49:25:13 2.8 18.25 131 PPM 288405 11:00:40.6 -31:50:19 6.0 0.95 141 PPM 288319 10:56:52.1 -31:12:18 7.7 0.08 141 PPM 288324 10:57:07.0 -31:20:03 9.7 0.06 141 22014_99XQ96 10:57:04.7 -31:16:24 15.2 141 Positions are for J2000