Occultation event with (6545) Leitus, event index number 3505
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/26 08:47:18 UTC
J2000 position of star is 12:59:02.0 -21:50:38
Equinox of date position of star is 13:00:26.3 -21:59:06
Star is 100 degrees from the moon. Moon is 56% illuminated.
Stellar brightness G=14.9, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 9.3 per integration for unocculted signal
Expected flux drop is 57% with SNR of 5.3 for the occulted depth (per occulted point)
Apparent velocity is 15.9 km/sec on the sky relative to the star, or, 17.9 arcsec/hr.
Position angle of asteroid motion is 107.8 degrees
The recommended exposure time corresponds to 12.7 km per image.
The 1-sigma error in the time of the event is 1.4 seconds.
The 1-sigma cross-track error in the shadow position is 28.1 km.
The sky-plane scale is 3191.4 km/arcsec.
Diameter estimates:
55.0 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
22.4 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 51.0 km used for deployment plan.
Star training set for 6545_Leitus, (2026/03/26 08:47UT) Object RA Dec mag sep mel Spica 13:26:34.7 -11:17:51 1.0 12.38 101 9Bet Crv 12:35:46.2 -23:32:29 2.6 5.90 95 PPM 261041 12:58:57.4 -22:53:42 6.0 0.97 100 PPM 261078 13:00:51.0 -22:16:09 8.0 0.30 100 PPM 261086 13:01:18.5 -21:55:19 9.0 0.21 100 6545_Leitus 13:00:26.3 -21:59:06 15.2 100 Positions are for equinox of date
Star training set for 6545_Leitus, (2026/03/26 08:47UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 12.38 101 9Bet Crv 12:34:23.2 -23:23:50 2.6 5.90 95 PPM 261041 12:57:33.0 -22:45:13 6.0 0.97 100 PPM 261078 12:59:26.6 -22:07:42 8.0 0.30 100 PPM 261086 12:59:54.2 -21:46:52 9.0 0.21 100 6545_Leitus 12:59:02.0 -21:50:38 15.2 100 Positions are for J2000