Occultation event with (16560) Daitor, event index number 1719
Regions able to see the event: Australia
Geocentric closest approach at 2025/12/25 13:38:34 UTC
J2000 position of star is 03:03:39.6 +03:31:49
Equinox of date position of star is 03:05:01.1 +03:37:50
Star is 68 degrees from the moon. Moon is 27% illuminated.
Stellar brightness G=16.8, apparent brightess of occulting body is G=16.0
Use an exposure time of 1.50 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 33% with SNR of 1.0 for the occulted depth (per occulted point)
Apparent velocity is 10.1 km/sec on the sky relative to the star, or, 11.0 arcsec/hr.
Position angle of asteroid motion is 118.1 degrees
The recommended exposure time corresponds to 15.2 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 25.4 km.
The sky-plane scale is 3305.8 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, aximum of 4.2 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 1.7 sec for a central chord
Cross-track diameter of 43.9 km used for deployment plan.
Star training set for 16560_Daitor, (2025/12/25 13:39UT) Object RA Dec mag sep mel Aldebaran 04:37:24.9 +16:33:34 0.8 26.11 93 Menkar 03:03:38.5 +04:11:24 2.5 0.66 68 93 Cet 03:03:44.4 +04:27:14 5.4 0.88 68 PPM 146162 03:03:12.6 +03:14:22 8.1 0.60 68 PPM 146181 03:04:07.7 +03:43:53 9.4 0.24 68 PPM 146194 03:05:12.7 +03:44:56 11.3 0.13 68 16560_Daitor 03:05:01.1 +03:37:50 16.0 69 Positions are for equinox of date
Star training set for 16560_Daitor, (2025/12/25 13:39UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 26.11 93 Menkar 03:02:16.8 +04:05:21 2.5 0.66 68 93 Cet 03:02:22.6 +04:21:11 5.4 0.88 68 PPM 146162 03:01:51.3 +03:08:17 8.1 0.60 68 PPM 146181 03:02:46.2 +03:37:51 9.4 0.24 68 PPM 146194 03:03:51.2 +03:38:56 11.3 0.13 68 16560_Daitor 03:03:39.6 +03:31:49 16.0 68 Positions are for J2000