Occultation event with (22014) 99XQ96, event index number 848
Regions able to see the event: SAfrica
Geocentric closest approach at 2025/03/23 21:50:35 UTC
J2000 position of star is 08:28:27.7 -13:30:00
Equinox of date position of star is 08:29:38.8 -13:35:06
Star is 137 degrees from the moon. Moon is 36% illuminated.
Stellar brightness G=13.5, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.18 seconds with the standard RECON-QHY system.
Expected flux drop is 18% with SNR of 9.8 per integration
Apparent velocity is 9.6 km/sec on the sky relative to the star, or, 11.7 arcsec/hr.
The recommended exposure time corresponds to 1.7 km per image.
The 1-sigma error in the time of the event is 2.5 seconds.
The 1-sigma cross-track error in the shadow position is 34.4 km.
The sky-plane scale is 2975.5 km/arcsec.
Diameter estimates:
53.7 km assuming a 5% albedo, aximum of 5.6 sec for a central chord
21.9 km assuming a 30% albedo, maximum of 2.3 sec for a central chord
Cross-track diameter of 53.7 km used for deployment plan.
Star training set for 22014_99XQ96, (2025/03/23 21:51UT) Object RA Dec mag sep mel Sirius 06:46:15.5 -16:45:08 -1.5 25.13 135 15Rho Pup 08:08:37.1 -24:22:42 2.8 11.88 128 PPM 220116 08:27:53.3 -12:37:08 5.4 1.06 139 PPM 220159 08:29:34.9 -13:38:24 8.2 0.06 137 22014_99XQ96 08:29:38.8 -13:35:06 15.2 137 Positions are for equinox of date
Star training set for 22014_99XQ96, (2025/03/23 21:51UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:28 -1.5 25.13 135 15Rho Pup 08:07:32.5 -24:18:14 2.8 11.88 128 PPM 220116 08:26:41.8 -12:32:05 5.4 1.06 139 PPM 220159 08:28:23.8 -13:33:18 8.2 0.06 137 22014_99XQ96 08:28:27.7 -13:30:00 15.2 137 Positions are for J2000