Occultation event with (6545) Leitus, event index number 3740
Regions able to see the event: SAmericaN,SAmericaS
Geocentric closest approach at 2026/05/12 05:16:17 UTC
J2000 position of star is 12:38:13.9 -19:08:24
Equinox of date position of star is 12:39:37.0 -19:17:05
Star is 150 degrees from the moon. Moon is 27% illuminated.
Stellar brightness G=12.4, apparent brightess of occulting body is G=15.4
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 17.1 per integration for unocculted signal
Expected flux drop is 94% with SNR of 16.1 for the occulted depth (per occulted point)
Apparent velocity is 12.6 km/sec on the sky relative to the star, or, 13.9 arcsec/hr.
Position angle of asteroid motion is 133.7 degrees
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 14.1 km.
The sky-plane scale is 3272.1 km/arcsec.
Diameter estimates:
55.0 km assuming a 5% albedo, maximum of 4.4 sec for a central chord
22.4 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 51.0 km used for deployment plan.
Star training set for 6545_Leitus, (2026/05/12 05:16UT) Object RA Dec mag sep mel Spica 13:26:35.1 -11:17:53 1.0 13.85 146 9Bet Crv 12:35:46.6 -23:32:32 2.6 4.35 148 PPM 226138 12:40:07.5 -18:23:40 6.0 0.90 151 PPM 226156 12:40:51.8 -19:23:00 8.1 0.31 150 6545_Leitus 12:39:37.0 -19:17:05 15.4 150 Positions are for equinox of date
Star training set for 6545_Leitus, (2026/05/12 05:16UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 13.85 146 9Bet Crv 12:34:23.2 -23:23:50 2.6 4.35 148 PPM 226138 12:38:44.4 -18:15:00 6.0 0.90 151 PPM 226156 12:39:28.6 -19:14:20 8.1 0.31 150 6545_Leitus 12:38:13.9 -19:08:24 15.4 150 Positions are for J2000