Occultation event with (11397) 98XX93, event index number 713
Regions able to see the event: Europe
Geocentric closest approach at 2025/02/26 00:01:40 UTC
J2000 position of star is 11:07:13.4 -21:51:55
Equinox of date position of star is 11:08:27.7 -22:00:06
Star is 126 degrees from the moon. Moon is 6% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=15.5
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
Expected flux drop is 47% with SNR of 6.8 per integration
Apparent velocity is 16.1 km/sec on the sky relative to the star, or, 17.6 arcsec/hr.
The recommended exposure time corresponds to 12.9 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 23.2 km.
The sky-plane scale is 3299.3 km/arcsec.
Diameter estimates:
53.5 km assuming a 5% albedo, aximum of 3.3 sec for a central chord
21.8 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 53.5 km used for deployment plan.
Star training set for 11397_98XX93, (2025/02/26 00:02UT) Object RA Dec mag sep mel Spica 13:26:31.3 -11:17:31 1.0 34.66 107 4Gam Crv 12:17:06.2 -17:40:53 2.6 16.70 118 PPM 258681 11:13:49.4 -21:53:11 6.2 1.25 126 PPM 258579 11:09:24.5 -21:39:18 7.6 0.41 126 PPM 258568 11:08:45.6 -22:05:44 9.3 0.12 126 11397_98XX93 11:08:27.7 -22:00:06 15.5 126 Positions are for equinox of date
Star training set for 11397_98XX93, (2025/02/26 00:02UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 34.66 107 4Gam Crv 12:15:48.1 -17:32:30 2.6 16.70 118 PPM 258681 11:12:34.8 -21:44:58 6.2 1.25 126 PPM 258579 11:08:10.1 -21:31:07 7.6 0.41 126 PPM 258568 11:07:31.3 -21:57:33 9.3 0.12 126 11397_98XX93 11:07:13.4 -21:51:55 15.5 126 Positions are for J2000