Occultation event with (22014) 99XQ96, event index number 887
Regions able to see the event: Europe
Geocentric closest approach at 2025/04/05 22:10:47 UTC
J2000 position of star is 08:28:03.7 -12:34:49
Equinox of date position of star is 08:29:15.3 -12:39:55
Star is 39 degrees from the moon. Moon is 59% illuminated.
Stellar brightness G=16.2, apparent brightess of occulting body is G=15.3
Use an exposure time of 1.45 seconds with the standard RECON-QHY system.
SNR of 4.6 per integration for unocculted signal
Expected flux drop is 30% with SNR of 1.4 for the occulted depth (per occulted point)
Apparent velocity is 9.0 km/sec on the sky relative to the star, or, 10.6 arcsec/hr.
The recommended exposure time corresponds to 13.1 km per image.
The 1-sigma error in the time of the event is 2.6 seconds.
The 1-sigma cross-track error in the shadow position is 32.4 km.
The sky-plane scale is 3083.6 km/arcsec.
Diameter estimates:
53.7 km assuming a 5% albedo, aximum of 5.9 sec for a central chord
21.9 km assuming a 30% albedo, maximum of 2.4 sec for a central chord
Cross-track diameter of 53.7 km used for deployment plan.
Star training set for 22014_99XQ96, (2025/04/05 22:11UT) Object RA Dec mag sep mel Sirius 06:46:15.6 -16:45:08 -1.5 25.22 46 15Rho Pup 08:08:37.2 -24:22:43 2.8 12.69 50 PPM 220116 08:27:53.4 -12:37:09 5.4 0.34 39 PPM 220124 08:28:02.4 -12:57:36 8.4 0.42 39 PPM 220145 08:29:06.7 -12:32:36 9.5 0.13 39 22014_99XQ96 08:29:15.3 -12:39:55 15.3 39 Positions are for equinox of date
Star training set for 22014_99XQ96, (2025/04/05 22:11UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:28 -1.5 25.22 46 15Rho Pup 08:07:32.5 -24:18:14 2.8 12.69 50 PPM 220116 08:26:41.8 -12:32:05 5.4 0.34 39 PPM 220124 08:26:50.9 -12:52:32 8.4 0.42 39 PPM 220145 08:27:55.0 -12:27:30 9.5 0.13 39 22014_99XQ96 08:28:03.7 -12:34:49 15.3 39 Positions are for J2000