Occultation event with (22014) 99XQ96, event index number 1649
Regions able to see the event: Australia
Geocentric closest approach at 2025/12/06 18:13:22 UTC
J2000 position of star is 11:27:41.9 -27:30:54
Equinox of date position of star is 11:28:59.1 -27:39:28
Star is 87 degrees from the moon. Moon is 95% illuminated.
Stellar brightness G=13.6, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.19 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 87% with SNR of 8.7 for the occulted depth (per occulted point)
Apparent velocity is 26.1 km/sec on the sky relative to the star, or, 25.4 arcsec/hr.
Position angle of asteroid motion is 143.7 degrees
The recommended exposure time corresponds to 5.0 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 11.5 km.
The sky-plane scale is 3701.7 km/arcsec.
Diameter estimates:
54.5 km assuming a 5% albedo, aximum of 2.1 sec for a central chord
22.2 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 39.5 km used for deployment plan.
Star training set for 22014_99XQ96, (2025/12/06 18:13UT) Object RA Dec mag sep mel Spica 13:26:33.8 -11:17:45 1.0 32.04 104 4Gam Crv 12:17:08.6 -17:41:09 2.6 14.91 92 PPM 259120 11:33:40.8 -26:53:24 5.9 1.30 88 PPM 258976 11:26:58.8 -27:41:29 8.3 0.45 87 PPM 259040 11:29:37.5 -27:48:34 9.4 0.21 87 22014_99XQ96 11:28:59.1 -27:39:28 15.7 87 Positions are for equinox of date
Star training set for 22014_99XQ96, (2025/12/06 18:13UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 32.04 104 4Gam Crv 12:15:48.1 -17:32:30 2.6 14.91 92 PPM 259120 11:32:23.1 -26:44:48 5.9 1.30 88 PPM 258976 11:25:41.7 -27:32:55 8.3 0.45 87 PPM 259040 11:28:20.2 -27:40:00 9.4 0.21 87 22014_99XQ96 11:27:41.9 -27:30:54 15.7 87 Positions are for J2000