Occultation event with (12714) Alkimos, event index number 3339
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/03 10:55:25 UTC
J2000 position of star is 12:12:14.4 -12:39:02
Equinox of date position of star is 12:13:35.3 -12:47:45
Star is 27 degrees from the moon. Moon is 100% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=15.2
Use an exposure time of 1.20 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 23% with SNR of 0.7 for the occulted depth (per occulted point)
Apparent velocity is 14.3 km/sec on the sky relative to the star, or, 16.5 arcsec/hr.
Position angle of asteroid motion is 101.2 degrees
The recommended exposure time corresponds to 17.2 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 31.1 km.
The sky-plane scale is 3123.3 km/arcsec.
Diameter estimates:
53.5 km assuming a 5% albedo, maximum of 3.7 sec for a central chord
21.8 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 47.8 km used for deployment plan.
Star training set for 12714_Alkimos, (2026/03/03 10:55UT) Object RA Dec mag sep mel Spica 13:26:34.5 -11:17:49 1.0 17.90 41 4Gam Crv 12:17:09.4 -17:41:14 2.6 4.97 31 PPM 225705 12:22:17.0 -13:42:38 5.1 2.30 29 PPM 225479 12:12:35.3 -12:14:34 8.4 0.60 27 PPM 225527 12:14:17.7 -12:56:09 8.6 0.22 27 12714_Alkimos 12:13:35.3 -12:47:45 15.2 28 Positions are for equinox of date
Star training set for 12714_Alkimos, (2026/03/03 10:55UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 17.90 41 4Gam Crv 12:15:48.1 -17:32:30 2.6 4.97 31 PPM 225705 12:20:55.7 -13:33:56 5.1 2.30 29 PPM 225479 12:11:14.5 -12:05:50 8.4 0.60 27 PPM 225527 12:12:56.7 -12:47:26 8.6 0.22 27 12714_Alkimos 12:12:14.4 -12:39:02 15.2 27 Positions are for J2000