Occultation event with (22180) 00YZ, event index number 1429
Regions able to see the event: Australia
Geocentric closest approach at 2025/10/29 09:58:43 UTC
J2000 position of star is 01:33:32.7 +32:50:17
Equinox of date position of star is 01:35:01.0 +32:58:11
Star is 92 degrees from the moon. Moon is 47% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=14.8
Use an exposure time of 0.65 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 18.2 km/sec on the sky relative to the star, or, 23.4 arcsec/hr.
Position angle of asteroid motion is 46.9 degrees
The recommended exposure time corresponds to 11.8 km per image.
The 1-sigma error in the time of the event is 1.0 seconds.
The 1-sigma cross-track error in the shadow position is 19.8 km.
The sky-plane scale is 2800.4 km/arcsec.
Diameter estimates:
53.5 km assuming a 5% albedo, aximum of 2.9 sec for a central chord
21.8 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 39.8 km used for deployment plan.
Star training set for 22180_00YZ, (2025/10/29 09:59UT) Object RA Dec mag sep mel Aldebaran 04:37:24.3 +16:33:33 0.8 44.13 126 57Gam1And 02:05:29.8 +42:27:09 2.3 11.23 101 PPM 066368 01:33:36.4 +34:55:56 6.4 1.98 93 PPM 066372 01:33:41.1 +32:40:26 8.5 0.41 92 PPM 066399 01:35:39.2 +33:09:22 10.5 0.23 92 22180_00YZ 01:35:01.0 +32:58:11 14.8 92 Positions are for equinox of date
Star training set for 22180_00YZ, (2025/10/29 09:59UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 44.13 126 57Gam1And 02:03:54.1 +42:19:46 2.3 11.23 101 PPM 066368 01:32:07.6 +34:48:00 6.4 1.98 93 PPM 066372 01:32:12.9 +32:32:31 8.5 0.41 92 PPM 066399 01:34:10.7 +33:01:28 10.5 0.23 92 22180_00YZ 01:33:32.7 +32:50:17 14.8 92 Positions are for J2000