Occultation event with (22014) 99XQ96, event index number 3751
Regions able to see the event: Europe
Geocentric closest approach at 2026/05/17 20:05:00 UTC
J2000 position of star is 10:55:08.6 -27:59:48
Equinox of date position of star is 10:56:24.5 -28:08:16
Star is 106 degrees from the moon. Moon is 2% illuminated.
Stellar brightness G=15.9, apparent brightess of occulting body is G=15.5
Use an exposure time of 0.65 seconds with the standard RECON-QHY system.
SNR of 3.7 per integration for unocculted signal
Expected flux drop is 40% with SNR of 1.5 for the occulted depth (per occulted point)
Apparent velocity is 14.2 km/sec on the sky relative to the star, or, 15.7 arcsec/hr.
Position angle of asteroid motion is 18.7 degrees
The recommended exposure time corresponds to 9.2 km per image.
The 1-sigma error in the time of the event is 2.1 seconds.
The 1-sigma cross-track error in the shadow position is 27.4 km.
The sky-plane scale is 3265.2 km/arcsec.
Diameter estimates:
54.5 km assuming a 5% albedo, maximum of 3.8 sec for a central chord
22.2 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 39.5 km used for deployment plan.
Star training set for 22014_99XQ96, (2026/05/17 20:05UT) Object RA Dec mag sep mel Bet Cru 12:49:16.9 -59:49:57 1.3 37.04 130 4Gam Crv 12:17:10.0 -17:41:18 2.6 21.28 120 Chi1Hya 11:06:36.4 -27:26:11 4.9 2.36 108 PPM 258312 10:57:07.6 -27:57:42 8.2 0.24 106 PPM 258308 10:56:50.3 -28:10:19 9.3 0.10 106 22014_99XQ96 10:56:24.5 -28:08:16 15.5 107 Positions are for equinox of date
Star training set for 22014_99XQ96, (2026/05/17 20:05UT) Object RA Dec mag sep mel Bet Cru 12:47:43.1 -59:41:20 1.3 37.04 130 4Gam Crv 12:15:48.1 -17:32:30 2.6 21.28 120 Chi1Hya 11:05:19.6 -27:17:37 4.9 2.36 108 PPM 258312 10:55:51.6 -27:49:14 8.2 0.24 106 PPM 258308 10:55:34.3 -28:01:50 9.3 0.10 106 22014_99XQ96 10:55:08.6 -27:59:48 15.5 106 Positions are for J2000