Occultation event with (22014) 99XQ96, event index number 905
Regions able to see the event: SAfrica,UAE
Geocentric closest approach at 2025/04/15 17:56:36 UTC
J2000 position of star is 08:29:23.0 -11:56:12
Equinox of date position of star is 08:30:35.1 -12:01:20
Star is 98 degrees from the moon. Moon is 93% illuminated.
Stellar brightness G=14.6, apparent brightess of occulting body is G=15.3
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 66% with SNR of 6.5 for the occulted depth (per occulted point)
Apparent velocity is 10.5 km/sec on the sky relative to the star, or, 11.9 arcsec/hr.
The recommended exposure time corresponds to 6.3 km per image.
The 1-sigma error in the time of the event is 2.7 seconds.
The 1-sigma cross-track error in the shadow position is 29.8 km.
The sky-plane scale is 3174.5 km/arcsec.
Diameter estimates:
54.0 km assuming a 5% albedo, aximum of 5.1 sec for a central chord
22.0 km assuming a 30% albedo, maximum of 2.1 sec for a central chord
Cross-track diameter of 54.0 km used for deployment plan.
Star training set for 22014_99XQ96, (2025/04/15 17:57UT) Object RA Dec mag sep mel Sirius 06:46:15.7 -16:45:09 -1.5 25.68 117 15Rho Pup 08:08:37.3 -24:22:43 2.8 13.41 97 PPM 220116 08:27:53.5 -12:37:09 5.4 0.89 99 PPM 220166 08:29:44.5 -11:28:17 8.5 0.59 99 PPM 220180 08:30:33.1 -12:10:14 8.6 0.15 98 22014_99XQ96 08:30:35.1 -12:01:20 15.3 98 Positions are for equinox of date
Star training set for 22014_99XQ96, (2025/04/15 17:57UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:28 -1.5 25.68 117 15Rho Pup 08:07:32.5 -24:18:14 2.8 13.41 97 PPM 220116 08:26:41.8 -12:32:05 5.4 0.89 99 PPM 220166 08:28:32.1 -11:23:10 8.5 0.59 99 PPM 220180 08:29:21.1 -12:05:06 8.6 0.15 98 22014_99XQ96 08:29:23.0 -11:56:12 15.3 98 Positions are for J2000