Occultation event with (9694) Lycomedes, event index number 762
Regions able to see the event: Europe
Geocentric closest approach at 2025/03/06 02:41:47 UTC
J2000 position of star is 08:36:42.7 +22:14:01
Equinox of date position of star is 08:38:10.7 +22:08:41
Star is 57 degrees from the moon. Moon is 44% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.8
Use an exposure time of 1.10 seconds with the standard RECON-QHY system.
Expected flux drop is 67% with SNR of 3.0 per integration
Apparent velocity is 10.4 km/sec on the sky relative to the star, or, 12.2 arcsec/hr.
The recommended exposure time corresponds to 11.4 km per image.
The 1-sigma error in the time of the event is 4.4 seconds.
The 1-sigma cross-track error in the shadow position is 19.1 km.
The sky-plane scale is 3074.2 km/arcsec.
Diameter estimates:
41.5 km assuming a 5% albedo, aximum of 4.0 sec for a central chord
16.9 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 41.5 km used for deployment plan.
Star training set for 9694_Lycomedes, (2025/03/06 02:42UT) Object RA Dec mag sep mel Pollux 07:46:51.2 +27:57:48 1.1 12.99 45 43Gam Cnc 08:44:44.3 +21:22:34 4.7 1.71 59 PPM 098828 08:36:06.9 +21:24:19 8.4 0.88 57 PPM 098857 08:38:07.9 +22:05:03 9.0 0.06 57 9694_Lycomedes 08:38:10.7 +22:08:41 15.8 58 Positions are for equinox of date
Star training set for 9694_Lycomedes, (2025/03/06 02:42UT) Object RA Dec mag sep mel Pollux 07:45:17.8 +28:01:33 1.1 12.99 45 43Gam Cnc 08:43:17.0 +21:28:06 4.7 1.71 59 PPM 098828 08:34:39.1 +21:29:35 8.4 0.88 57 PPM 098857 08:36:39.9 +22:10:23 9.0 0.06 57 9694_Lycomedes 08:36:42.7 +22:14:01 15.8 57 Positions are for J2000