Occultation event with (51365) 00TA42, event index number 4146
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/09/01 05:54:25 UTC
J2000 position of star is 03:40:50.0 +38:04:49
Equinox of date position of star is 03:42:35.0 +38:09:52
Star is 35 degrees from the moon. Moon is 82% illuminated.
Stellar brightness G=16.1, apparent brightess of occulting body is G=16.5
Use an exposure time of 0.65 seconds with the standard RECON-QHY system.
SNR of 3.3 per integration for unocculted signal
Expected flux drop is 59% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 14.9 arcsec/hr.
Position angle of asteroid motion is 15.0 degrees
The recommended exposure time corresponds to 10.1 km per image.
The 1-sigma error in the time of the event is 1.7 seconds.
The 1-sigma cross-track error in the shadow position is 10.3 km.
The sky-plane scale is 3783.3 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, maximum of 2.7 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 40.6 km used for deployment plan.
Star training set for 51365_00TA42, (2026/09/01 05:54UT) Object RA Dec mag sep mel Aldebaran 04:37:27.2 +16:33:39 0.8 24.73 42 44Zet Per 03:55:48.9 +31:57:38 2.8 6.77 35 PPM 068686 03:42:52.5 +37:39:51 5.4 0.50 35 PPM 068697 03:43:28.1 +37:40:15 7.7 0.52 35 PPM 068686 03:42:52.5 +37:39:51 5.4 0.50 35 PPM 068689 03:43:00.4 +37:54:06 10.4 0.28 35 51365_00TA42 03:42:35.0 +38:09:52 16.5 35 Positions are for equinox of date
Star training set for 51365_00TA42, (2026/09/01 05:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 24.73 42 44Zet Per 03:54:07.9 +31:53:01 2.8 6.77 35 PPM 068686 03:41:07.9 +37:34:49 5.4 0.50 35 PPM 068697 03:41:43.4 +37:35:13 7.7 0.52 35 PPM 068686 03:41:07.9 +37:34:49 5.4 0.50 35 PPM 068689 03:41:15.6 +37:49:03 10.4 0.28 35 51365_00TA42 03:40:50.0 +38:04:49 16.5 35 Positions are for J2000