Occultation event with (51365) 00TA42, event index number 1194
Regions able to see the event: SMexico
Geocentric closest approach at 2025/06/06 10:00:06 UTC
J2000 position of star is 01:40:40.6 +10:45:32
Equinox of date position of star is 01:42:01.6 +10:53:12
Star is 174 degrees from the moon. Moon is 79% illuminated.
Stellar brightness G=15.0, apparent brightess of occulting body is G=16.6
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 4.8 per integration for unocculted signal
Expected flux drop is 82% with SNR of 3.9 for the occulted depth (per occulted point)
Apparent velocity is 31.3 km/sec on the sky relative to the star, or, 26.4 arcsec/hr.
The recommended exposure time corresponds to 9.4 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 37.4 km.
The sky-plane scale is 4264.5 km/arcsec.
Diameter estimates:
42.9 km assuming a 5% albedo, aximum of 1.4 sec for a central chord
17.5 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 42.9 km used for deployment plan.
Star training set for 51365_00TA42, (2025/06/06 10:00UT) Object RA Dec mag sep mel Aldebaran 04:37:23.0 +16:33:30 0.8 42.88 132 6Bet Ari 01:56:03.0 +20:55:52 2.6 10.59 167 102Pi Psc 01:38:27.0 +12:16:15 5.6 1.64 175 PPM 117596 01:43:56.7 +10:22:18 7.5 0.70 174 PPM 117546 01:40:59.5 +11:01:56 10.0 0.29 175 51365_00TA42 01:42:01.6 +10:53:12 16.6 174 Positions are for equinox of date
Star training set for 51365_00TA42, (2025/06/06 10:00UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 42.88 132 6Bet Ari 01:54:38.6 +20:48:26 2.6 10.59 167 102Pi Psc 01:37:05.8 +12:08:31 5.6 1.64 175 PPM 117596 01:42:35.8 +10:14:40 7.5 0.70 174 PPM 117546 01:39:38.5 +10:54:14 10.0 0.29 175 51365_00TA42 01:40:40.6 +10:45:32 16.6 174 Positions are for J2000