Occultation event with (5244) Amphilochos, event index number 874
Regions able to see the event: Australia,UAE
Geocentric closest approach at 2025/04/01 15:27:18 UTC
J2000 position of star is 09:39:34.1 +07:25:24
Equinox of date position of star is 09:40:54.2 +07:18:29
Star is 88 degrees from the moon. Moon is 15% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=15.9
Use an exposure time of 1.30 seconds with the standard RECON-QHY system.
Expected flux drop is 41% with SNR of 8.3 per integration
Apparent velocity is 8.5 km/sec on the sky relative to the star, or, 9.2 arcsec/hr.
The recommended exposure time corresponds to 11.1 km per image.
The 1-sigma error in the time of the event is 5.1 seconds.
The 1-sigma cross-track error in the shadow position is 36.3 km.
The sky-plane scale is 3336.1 km/arcsec.
Diameter estimates:
45.9 km assuming a 5% albedo, aximum of 5.4 sec for a central chord
18.8 km assuming a 30% albedo, maximum of 2.2 sec for a central chord
Cross-track diameter of 45.9 km used for deployment plan.
Star training set for 5244_Amphilochos, (2025/04/01 15:27UT) Object RA Dec mag sep mel Regulus 10:09:42.8 +11:50:34 1.3 8.42 93 10 Leo 09:38:32.5 +06:43:17 6.1 0.83 88 PPM 156041 09:39:42.8 +07:35:38 7.6 0.41 88 PPM 156070 09:41:20.5 +07:16:35 10.4 0.11 88 5244_Amphiloch 09:40:54.2 +07:18:29 15.9 89 Positions are for equinox of date
Star training set for 5244_Amphilochos, (2025/04/01 15:27UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 8.42 93 10 Leo 09:37:12.5 +06:50:09 6.1 0.83 88 PPM 156041 09:38:22.5 +07:42:32 7.6 0.41 88 PPM 156070 09:40:00.3 +07:23:31 10.4 0.11 88 5244_Amphiloch 09:39:34.1 +07:25:24 15.9 88 Positions are for J2000