Occultation event with (15398) 97UZ23, event index number 3241
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/02/13 03:43:55 UTC
J2000 position of star is 12:07:13.4 -08:59:23
Equinox of date position of star is 12:08:33.9 -09:08:07
Star is 88 degrees from the moon. Moon is 18% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 3.8 per integration for unocculted signal
Expected flux drop is 47% with SNR of 1.8 for the occulted depth (per occulted point)
Apparent velocity is 11.5 km/sec on the sky relative to the star, or, 13.4 arcsec/hr.
Position angle of asteroid motion is 133.2 degrees
The recommended exposure time corresponds to 8.6 km per image.
The 1-sigma error in the time of the event is 1.9 seconds.
The 1-sigma cross-track error in the shadow position is 27.2 km.
The sky-plane scale is 3070.8 km/arcsec.
Diameter estimates:
39.8 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
16.2 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 35.5 km used for deployment plan.
Star training set for 15398_97UZ23, (2026/02/13 03:44UT) Object RA Dec mag sep mel Spica 13:26:34.4 -11:17:49 1.0 19.31 70 4Gam Crv 12:17:09.2 -17:41:13 2.6 8.80 82 PPM 195089 12:04:12.0 -07:49:44 5.8 1.69 90 PPM 195168 12:09:07.4 -08:37:53 7.8 0.52 88 PPM 195164 12:08:52.2 -09:22:25 9.6 0.25 88 15398_97UZ23 12:08:33.9 -09:08:07 15.9 88 Positions are for equinox of date
Star training set for 15398_97UZ23, (2026/02/13 03:44UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 19.31 70 4Gam Crv 12:15:48.1 -17:32:30 2.6 8.80 82 PPM 195089 12:02:51.6 -07:41:01 5.8 1.69 90 PPM 195168 12:07:46.9 -08:29:10 7.8 0.52 88 PPM 195164 12:07:31.7 -09:13:42 9.6 0.25 88 15398_97UZ23 12:07:13.4 -08:59:23 15.9 88 Positions are for J2000