Occultation event with (12052) Aretaon, event index number 1024
Regions able to see the event: SAmericaN
Geocentric closest approach at 2025/06/01 07:59:10 UTC
J2000 position of star is 00:50:09.3 +11:37:45
Equinox of date position of star is 00:51:29.0 +11:46:02
Star is 123 degrees from the moon. Moon is 32% illuminated.
Stellar brightness G=16.1, apparent brightess of occulting body is G=16.3
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 55% with SNR of 1.7 for the occulted depth (per occulted point)
Apparent velocity is 30.2 km/sec on the sky relative to the star, or, 27.1 arcsec/hr.
The recommended exposure time corresponds to 18.1 km per image.
The 1-sigma error in the time of the event is 1.9 seconds.
The 1-sigma cross-track error in the shadow position is 27.5 km.
The sky-plane scale is 4010.5 km/arcsec.
Diameter estimates:
44.3 km assuming a 5% albedo, aximum of 1.5 sec for a central chord
18.1 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 44.3 km used for deployment plan.
Star training set for 12052_Aretaon, (2025/06/01 07:59UT) Object RA Dec mag sep mel Algenib 00:14:32.9 +15:19:29 2.8 9.65 129 58 Psc 00:48:21.2 +12:06:43 5.5 0.84 124 PPM 116749 00:47:24.1 +12:14:45 8.4 1.11 124 PPM 116809 00:51:31.8 +11:58:04 9.3 0.20 123 PPM 116810 00:51:33.0 +11:41:05 11.0 0.08 123 12052_Aretaon 00:51:29.0 +11:46:02 16.3 123 Positions are for equinox of date
Star training set for 12052_Aretaon, (2025/06/01 07:59UT) Object RA Dec mag sep mel Algenib 00:13:14.2 +15:11:00 2.8 9.65 129 58 Psc 00:47:01.6 +11:58:25 5.5 0.84 124 PPM 116749 00:46:04.4 +12:06:27 8.4 1.11 124 PPM 116809 00:50:12.1 +11:49:48 9.3 0.20 123 PPM 116810 00:50:13.4 +11:32:48 11.0 0.08 123 12052_Aretaon 00:50:09.3 +11:37:45 16.3 123 Positions are for J2000