Occultation event with (16560) Daitor, event index number 4049
Regions able to see the event: Australia
Geocentric closest approach at 2026/08/19 18:08:33 UTC
J2000 position of star is 05:26:10.4 +16:06:59
Equinox of date position of star is 05:27:42.5 +16:08:16
Star is 149 degrees from the moon. Moon is 47% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=16.6
Use an exposure time of 0.40 seconds with the standard RECON-QHY system.
SNR of 4.7 per integration for unocculted signal
Expected flux drop is 77% with SNR of 3.6 for the occulted depth (per occulted point)
Apparent velocity is 24.4 km/sec on the sky relative to the star, or, 21.6 arcsec/hr.
Position angle of asteroid motion is 86.8 degrees
The recommended exposure time corresponds to 9.8 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 24.2 km.
The sky-plane scale is 4072.2 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, maximum of 1.8 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 0.7 sec for a central chord
Cross-track diameter of 43.9 km used for deployment plan.
Star training set for 16560_Daitor, (2026/08/19 18:09UT) Object RA Dec mag sep mel Betelgeuse 05:56:36.9 +07:24:35 0.4 11.23 139 Bellatrix 05:26:33.7 +06:22:18 1.6 9.77 144 116 Tau 05:29:17.5 +15:53:39 5.5 0.45 148 PPM 120955 05:28:10.0 +16:14:25 7.9 0.15 148 PPM 120951 05:27:53.3 +16:07:45 10.1 0.04 148 16560_Daitor 05:27:42.5 +16:08:16 16.6 148 Positions are for equinox of date
Star training set for 16560_Daitor, (2026/08/19 18:09UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 11.23 139 Bellatrix 05:25:07.8 +06:20:58 1.6 9.77 144 116 Tau 05:27:45.6 +15:52:26 5.5 0.45 148 PPM 120955 05:26:37.9 +16:13:09 7.9 0.15 148 PPM 120951 05:26:21.3 +16:06:29 10.1 0.04 148 16560_Daitor 05:26:10.4 +16:06:59 16.6 149 Positions are for J2000