Occultation event with (911) Agamemnon, event index number 857
Regions able to see the event: SAmericaN
Geocentric closest approach at 2025/03/27 05:47:59 UTC
J2000 position of star is 09:50:09.6 +16:19:36
Equinox of date position of star is 09:51:32.4 +16:12:29
Star is 168 degrees from the moon. Moon is 7% illuminated.
Stellar brightness G=15.6, apparent brightess of occulting body is G=13.1
Use an exposure time of 2.00 seconds with the standard RECON-QHY system.
Expected flux drop is 90% with SNR of 6.1 per integration
Apparent velocity is 11.8 km/sec on the sky relative to the star, or, 13.1 arcsec/hr.
The recommended exposure time corresponds to 23.6 km per image.
The 1-sigma error in the time of the event is 2.5 seconds.
The 1-sigma cross-track error in the shadow position is 26.1 km.
The sky-plane scale is 3253.3 km/arcsec.
Diameter estimates:
157.0 km assuming a 5% albedo, aximum of 13.3 sec for a central chord
64.1 km assuming a 30% albedo, maximum of 5.4 sec for a central chord
Cross-track diameter of 157.0 km used for deployment plan.
Star training set for 911_Agamemnon, (2025/03/27 05:48UT) Object RA Dec mag sep mel Regulus 10:09:42.8 +11:50:34 1.3 6.20 174 16Psi Leo 09:45:06.2 +13:54:18 5.3 2.78 167 PPM 126818 09:50:18.1 +15:26:50 8.5 0.82 168 PPM 126846 09:51:54.3 +16:11:38 9.6 0.09 168 911_Agamemnon 09:51:32.4 +16:12:29 13.1 168 Positions are for equinox of date
Star training set for 911_Agamemnon, (2025/03/27 05:48UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 6.20 174 16Psi Leo 09:43:43.9 +14:01:18 5.3 2.78 167 PPM 126818 09:48:55.5 +15:33:56 8.5 0.82 168 PPM 126846 09:50:31.5 +16:18:46 9.6 0.09 168 911_Agamemnon 09:50:09.6 +16:19:36 13.1 168 Positions are for J2000