Occultation event with (5244) Amphilochos, event index number 3490
Regions able to see the event: SAmericaN,SAmericaS
Geocentric closest approach at 2026/03/23 08:12:30 UTC
J2000 position of star is 11:54:56.6 -03:53:54
Equinox of date position of star is 11:56:17.2 -04:02:40
Star is 121 degrees from the moon. Moon is 23% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=15.3
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 5.2 per integration for unocculted signal
Expected flux drop is 51% with SNR of 2.6 for the occulted depth (per occulted point)
Apparent velocity is 17.2 km/sec on the sky relative to the star, or, 19.8 arcsec/hr.
Position angle of asteroid motion is 117.4 degrees
The recommended exposure time corresponds to 8.6 km per image.
The 1-sigma error in the time of the event is 1.5 seconds.
The 1-sigma cross-track error in the shadow position is 25.6 km.
The sky-plane scale is 3138.7 km/arcsec.
Diameter estimates:
46.3 km assuming a 5% albedo, maximum of 2.7 sec for a central chord
18.9 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 36.7 km used for deployment plan.
Star training set for 5244_Amphilochos, (2026/03/23 08:12UT) Object RA Dec mag sep mel Spica 13:26:34.7 -11:17:51 1.0 23.50 144 4Gam Crv 12:17:09.5 -17:41:15 2.6 14.57 131 PPM 194890 11:52:22.8 -05:28:45 5.6 1.73 120 PPM 194938 11:55:12.6 -03:55:23 7.5 0.29 120 PPM 194971 11:57:01.7 -04:11:34 8.8 0.24 121 5244_Amphiloch 11:56:17.2 -04:02:40 15.3 121 Positions are for equinox of date
Star training set for 5244_Amphilochos, (2026/03/23 08:12UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 23.50 144 4Gam Crv 12:15:48.1 -17:32:30 2.6 14.57 131 PPM 194890 11:51:02.3 -05:20:00 5.6 1.73 120 PPM 194938 11:53:52.0 -03:46:38 7.5 0.29 120 PPM 194971 11:55:41.1 -04:02:49 8.8 0.24 121 5244_Amphiloch 11:54:56.6 -03:53:54 15.3 121 Positions are for J2000