Occultation event with (51365) 00TA42, event index number 4738
Regions able to see the event: UAE
Geocentric closest approach at 2026/11/17 20:38:10 UTC
J2000 position of star is 03:07:53.7 +42:31:37
Equinox of date position of star is 03:09:40.6 +42:37:43
Star is 87 degrees from the moon. Moon is 54% illuminated.
Stellar brightness G=15.8, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 3.5 per integration for unocculted signal
Expected flux drop is 53% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 19.3 km/sec on the sky relative to the star, or, 21.2 arcsec/hr.
Position angle of asteroid motion is 87.9 degrees
The recommended exposure time corresponds to 9.7 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 21.7 km.
The sky-plane scale is 3280.3 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, maximum of 2.2 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 40.6 km used for deployment plan.
Star training set for 51365_00TA42, (2026/11/17 20:38UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 32.10 100 Algol 03:09:55.7 +41:03:26 2.1 1.57 87 PPM 045917 03:13:56.6 +42:28:31 5.9 0.80 88 PPM 045890 03:11:36.3 +42:21:39 8.2 0.44 87 PPM 045849 03:08:31.2 +42:41:22 8.6 0.22 87 51365_00TA42 03:09:40.6 +42:37:43 15.9 87 Positions are for equinox of date
Star training set for 51365_00TA42, (2026/11/17 20:38UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 32.10 100 Algol 03:08:10.1 +40:57:20 2.1 1.57 87 PPM 045917 03:12:09.5 +42:22:33 5.9 0.80 88 PPM 045890 03:09:49.5 +42:15:36 8.2 0.44 87 PPM 045849 03:06:44.4 +42:35:14 8.6 0.22 87 51365_00TA42 03:07:53.7 +42:31:37 15.9 87 Positions are for J2000