Occultation event with (6545) Leitus, event index number 3477
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/21 06:57:24 UTC
J2000 position of star is 13:01:28.4 -22:00:38
Equinox of date position of star is 13:02:52.8 -22:09:04
Star is 167 degrees from the moon. Moon is 7% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=15.3
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 6.6 per integration for unocculted signal
Expected flux drop is 49% with SNR of 3.2 for the occulted depth (per occulted point)
Apparent velocity is 15.0 km/sec on the sky relative to the star, or, 16.9 arcsec/hr.
Position angle of asteroid motion is 104.9 degrees
The recommended exposure time corresponds to 12.0 km per image.
The 1-sigma error in the time of the event is 1.3 seconds.
The 1-sigma cross-track error in the shadow position is 28.6 km.
The sky-plane scale is 3210.2 km/arcsec.
Diameter estimates:
55.0 km assuming a 5% albedo, maximum of 3.7 sec for a central chord
22.4 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 51.0 km used for deployment plan.
Star training set for 6545_Leitus, (2026/03/21 06:57UT) Object RA Dec mag sep mel Spica 13:26:34.7 -11:17:50 1.0 12.24 173 9Bet Crv 12:35:46.2 -23:32:29 2.6 6.40 161 PPM 261041 12:58:57.4 -22:53:42 6.0 1.17 166 PPM 261100 13:01:55.0 -21:55:49 8.4 0.31 167 PPM 261096 13:01:44.8 -22:16:25 9.6 0.29 167 6545_Leitus 13:02:52.8 -22:09:04 15.3 168 Positions are for equinox of date
Star training set for 6545_Leitus, (2026/03/21 06:57UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 12.24 173 9Bet Crv 12:34:23.2 -23:23:50 2.6 6.40 161 PPM 261041 12:57:33.0 -22:45:13 6.0 1.17 166 PPM 261100 13:00:30.6 -21:47:22 8.4 0.31 167 PPM 261096 13:00:20.4 -22:07:58 9.6 0.29 167 6545_Leitus 13:01:28.4 -22:00:38 15.3 167 Positions are for J2000