Occultation event with (16560) Daitor, event index number 4275
Regions able to see the event: SAmericaS
Geocentric closest approach at 2026/09/20 08:36:45 UTC
J2000 position of star is 05:40:28.2 +16:13:08
Equinox of date position of star is 05:42:00.7 +16:13:52
Star is 159 degrees from the moon. Moon is 64% illuminated.
Stellar brightness G=14.6, apparent brightess of occulting body is G=16.4
Use an exposure time of 0.55 seconds with the standard RECON-QHY system.
SNR of 9.7 per integration for unocculted signal
Expected flux drop is 84% with SNR of 8.1 for the occulted depth (per occulted point)
Apparent velocity is 10.6 km/sec on the sky relative to the star, or, 10.3 arcsec/hr.
Position angle of asteroid motion is 90.1 degrees
The recommended exposure time corresponds to 5.9 km per image.
The 1-sigma error in the time of the event is 0.7 seconds.
The 1-sigma cross-track error in the shadow position is 25.2 km.
The sky-plane scale is 3726.7 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, maximum of 4.0 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 43.9 km used for deployment plan.
Star training set for 16560_Daitor, (2026/09/20 08:37UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.2 +07:24:35 0.4 9.52 155 Bellatrix 05:26:33.9 +06:22:18 1.6 10.56 150 126 Tau 05:42:50.4 +16:32:43 4.6 0.37 159 PPM 121244 05:41:50.4 +16:24:14 7.9 0.18 159 16560_Daitor 05:42:00.7 +16:13:52 16.4 159 Positions are for equinox of date
Star training set for 16560_Daitor, (2026/09/20 08:37UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 9.52 155 Bellatrix 05:25:07.8 +06:20:58 1.6 10.56 150 126 Tau 05:41:17.7 +16:32:01 4.6 0.37 159 PPM 121244 05:40:17.7 +16:23:30 7.9 0.18 159 16560_Daitor 05:40:28.2 +16:13:08 16.4 159 Positions are for J2000