Occultation event with (5244) Amphilochos, event index number 3309
Regions able to see the event: Australia,NZ
Geocentric closest approach at 2026/02/25 12:16:10 UTC
J2000 position of star is 12:06:24.8 -05:17:03
Equinox of date position of star is 12:07:45.3 -05:25:47
Star is 104 degrees from the moon. Moon is 61% illuminated.
Stellar brightness G=11.8, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 23.8 per integration for unocculted signal
Expected flux drop is 97% with SNR of 23.1 for the occulted depth (per occulted point)
Apparent velocity is 14.0 km/sec on the sky relative to the star, or, 15.7 arcsec/hr.
Position angle of asteroid motion is 114.2 degrees
The recommended exposure time corresponds to 1.7 km per image.
The 1-sigma error in the time of the event is 1.8 seconds.
The 1-sigma cross-track error in the shadow position is 26.9 km.
The sky-plane scale is 3209.0 km/arcsec.
Diameter estimates:
46.3 km assuming a 5% albedo, maximum of 3.3 sec for a central chord
18.9 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 36.7 km used for deployment plan.
Star training set for 5244_Amphilochos, (2026/02/25 12:16UT) Object RA Dec mag sep mel Spica 13:26:34.5 -11:17:49 1.0 20.35 124 4Gam Crv 12:17:09.3 -17:41:13 2.6 12.47 111 PPM 178683 12:07:20.2 -03:16:38 6.4 2.15 103 PPM 195192 12:10:20.6 -05:17:41 8.3 0.66 104 PPM 195156 12:08:18.9 -05:12:40 8.8 0.26 104 5244_Amphiloch 12:07:45.3 -05:25:47 15.7 104 Positions are for equinox of date
Star training set for 5244_Amphilochos, (2026/02/25 12:16UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.35 124 4Gam Crv 12:15:48.1 -17:32:30 2.6 12.47 111 PPM 178683 12:05:59.8 -03:07:54 6.4 2.15 103 PPM 195192 12:09:00.0 -05:08:57 8.3 0.66 104 PPM 195156 12:06:58.4 -05:03:57 8.8 0.26 104 5244_Amphiloch 12:06:24.8 -05:17:03 15.7 104 Positions are for J2000