Occultation event with (22014) 99XQ96, event index number 781
Regions able to see the event: SAmericaS
Geocentric closest approach at 2025/03/09 02:30:59 UTC
J2000 position of star is 08:31:55.1 -14:31:01
Equinox of date position of star is 08:33:05.7 -14:36:12
Star is 45 degrees from the moon. Moon is 75% illuminated.
Stellar brightness G=11.5, apparent brightess of occulting body is G=15.0
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
Expected flux drop is 4% with SNR of 28.9 per integration
Apparent velocity is 12.4 km/sec on the sky relative to the star, or, 15.5 arcsec/hr.
The recommended exposure time corresponds to 1.5 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 26.2 km.
The sky-plane scale is 2876.5 km/arcsec.
Diameter estimates:
53.7 km assuming a 5% albedo, aximum of 4.3 sec for a central chord
21.9 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 53.7 km used for deployment plan.
Star training set for 22014_99XQ96, (2025/03/09 02:31UT) Object RA Dec mag sep mel Sirius 06:46:15.4 -16:45:08 -1.5 25.79 45 15Rho Pup 08:08:37.0 -24:22:42 2.8 11.35 52 PPM 220100 08:27:05.8 -15:00:47 6.0 1.51 44 PPM 220257 08:33:48.2 -14:30:17 6.8 0.20 45 PPM 220232 08:32:27.8 -14:35:22 9.4 0.15 45 22014_99XQ96 08:33:05.7 -14:36:12 15.0 45 Positions are for equinox of date
Star training set for 22014_99XQ96, (2025/03/09 02:31UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:28 -1.5 25.79 45 15Rho Pup 08:07:32.5 -24:18:14 2.8 11.35 52 PPM 220100 08:25:55.6 -14:55:46 6.0 1.51 44 PPM 220257 08:32:37.6 -14:25:05 6.8 0.20 45 PPM 220232 08:31:17.2 -14:30:12 9.4 0.15 45 22014_99XQ96 08:31:55.1 -14:31:01 15.0 45 Positions are for J2000