Occultation event with (22014) 99XQ96, event index number 3884
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/07/23 23:27:09 UTC
J2000 position of star is 11:30:04.1 -24:36:02
Equinox of date position of star is 11:31:23.7 -24:44:50
Star is 57 degrees from the moon. Moon is 74% illuminated.
Stellar brightness G=14.9, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 5.1 per integration for unocculted signal
Expected flux drop is 72% with SNR of 3.7 for the occulted depth (per occulted point)
Apparent velocity is 29.6 km/sec on the sky relative to the star, or, 27.1 arcsec/hr.
Position angle of asteroid motion is 90.4 degrees
The recommended exposure time corresponds to 8.9 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 38.5 km.
The sky-plane scale is 3925.2 km/arcsec.
Diameter estimates:
54.5 km assuming a 5% albedo, maximum of 1.8 sec for a central chord
22.2 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 39.5 km used for deployment plan.
Star training set for 22014_99XQ96, (2026/07/23 23:27UT) Object RA Dec mag sep mel Spica 13:26:35.8 -11:17:57 1.0 30.41 35 4Gam Crv 12:17:10.6 -17:41:21 2.6 12.78 49 PPM 259265 11:40:20.7 -24:52:12 6.4 2.03 55 PPM 259069 11:31:04.9 -25:08:55 7.6 0.41 57 PPM 259054 11:30:28.9 -24:43:26 9.8 0.21 57 22014_99XQ96 11:31:23.7 -24:44:50 15.9 56 Positions are for equinox of date
Star training set for 22014_99XQ96, (2026/07/23 23:27UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 30.41 35 4Gam Crv 12:15:48.1 -17:32:30 2.6 12.78 49 PPM 259265 11:39:00.5 -24:43:22 6.4 2.03 55 PPM 259069 11:29:45.3 -25:00:07 7.6 0.41 57 PPM 259054 11:29:09.4 -24:34:38 9.8 0.21 57 22014_99XQ96 11:30:04.1 -24:36:02 15.9 57 Positions are for J2000