Occultation event with (22180) 00YZ, event index number 4411
Regions able to see the event: Europe
Geocentric closest approach at 2026/10/16 02:09:50 UTC
J2000 position of star is 04:51:40.6 +24:10:00
Equinox of date position of star is 04:53:18.4 +24:12:36
Star is 169 degrees from the moon. Moon is 27% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=15.2
Use an exposure time of 1.05 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 24% with SNR of 0.7 for the occulted depth (per occulted point)
Apparent velocity is 9.2 km/sec on the sky relative to the star, or, 11.0 arcsec/hr.
Position angle of asteroid motion is 41.1 degrees
The recommended exposure time corresponds to 9.7 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 26.2 km.
The sky-plane scale is 3020.9 km/arcsec.
Diameter estimates:
53.5 km assuming a 5% albedo, maximum of 5.8 sec for a central chord
21.8 km assuming a 30% albedo, maximum of 2.4 sec for a central chord
Cross-track diameter of 39.8 km used for deployment plan.
Star training set for 22180_00YZ, (2026/10/16 02:10UT) Object RA Dec mag sep mel Aldebaran 04:37:27.7 +16:33:39 0.8 8.50 162 Alnath 05:27:59.3 +28:37:39 1.6 8.93 178 PPM 093742 04:47:19.7 +23:40:30 6.1 1.47 168 PPM 093877 04:56:15.3 +23:58:46 8.5 0.71 170 PPM 093822 04:52:52.7 +24:20:03 9.4 0.16 169 PPM 093834 04:53:45.7 +24:05:34 11.3 0.16 169 22180_00YZ 04:53:18.4 +24:12:36 15.2 170 Positions are for equinox of date
Star training set for 22180_00YZ, (2026/10/16 02:10UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 8.50 162 Alnath 05:26:17.6 +28:36:22 1.6 8.93 178 PPM 093742 04:45:42.5 +23:37:41 6.1 1.47 168 PPM 093877 04:54:37.6 +23:56:16 8.5 0.71 170 PPM 093822 04:51:14.9 +24:17:26 9.4 0.16 169 PPM 093834 04:52:08.0 +24:02:59 11.3 0.16 169 22180_00YZ 04:51:40.6 +24:10:00 15.2 169 Positions are for J2000