Occultation event with (51365) 00TA42, event index number 1588
Regions able to see the event: Australia
Geocentric closest approach at 2025/11/25 16:55:46 UTC
J2000 position of star is 01:16:27.3 +17:14:53
Equinox of date position of star is 01:17:50.5 +17:23:03
Star is 81 degrees from the moon. Moon is 25% illuminated.
Stellar brightness G=16.3, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 43% with SNR of 1.3 for the occulted depth (per occulted point)
Apparent velocity is 12.7 km/sec on the sky relative to the star, or, 13.9 arcsec/hr.
Position angle of asteroid motion is 84.1 degrees
The recommended exposure time corresponds to 9.5 km per image.
The 1-sigma error in the time of the event is 1.8 seconds.
The 1-sigma cross-track error in the shadow position is 14.0 km.
The sky-plane scale is 3288.5 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, aximum of 3.4 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 40.6 km used for deployment plan.
Star training set for 51365_00TA42, (2025/11/25 16:56UT) Object RA Dec mag sep mel Aldebaran 04:37:24.6 +16:33:33 0.8 47.59 126 6Bet Ari 01:56:04.6 +20:56:01 2.6 9.70 91 87 Psc 01:15:30.4 +16:16:11 5.7 1.25 80 PPM 117185 01:18:00.4 +18:39:32 8.5 1.28 82 PPM 117178 01:17:35.3 +17:46:14 9.4 0.39 81 51365_00TA42 01:17:50.5 +17:23:03 16.0 82 Positions are for equinox of date
Star training set for 51365_00TA42, (2025/11/25 16:56UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 47.59 126 6Bet Ari 01:54:38.6 +20:48:26 2.6 9.70 91 87 Psc 01:14:07.5 +16:07:59 5.7 1.25 80 PPM 117185 01:16:36.9 +18:31:22 8.5 1.28 82 PPM 117178 01:16:12.0 +17:38:04 9.4 0.39 81 51365_00TA42 01:16:27.3 +17:14:53 16.0 81 Positions are for J2000