Occultation event with (9694) Lycomedes, event index number 751
Regions able to see the event: Europe
Geocentric closest approach at 2025/03/04 01:24:24 UTC
J2000 position of star is 08:37:27.3 +22:13:16
Equinox of date position of star is 08:38:55.3 +22:07:55
Star is 87 degrees from the moon. Moon is 22% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.8
Use an exposure time of 1.20 seconds with the standard RECON-QHY system.
Expected flux drop is 68% with SNR of 3.1 per integration
Apparent velocity is 11.1 km/sec on the sky relative to the star, or, 13.0 arcsec/hr.
The recommended exposure time corresponds to 13.3 km per image.
The 1-sigma error in the time of the event is 4.1 seconds.
The 1-sigma cross-track error in the shadow position is 19.1 km.
The sky-plane scale is 3059.5 km/arcsec.
Diameter estimates:
41.5 km assuming a 5% albedo, aximum of 3.7 sec for a central chord
16.9 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 41.5 km used for deployment plan.
Star training set for 9694_Lycomedes, (2025/03/04 01:24UT) Object RA Dec mag sep mel Pollux 07:46:51.2 +27:57:48 1.1 13.14 74 43Gam Cnc 08:44:44.3 +21:22:35 4.7 1.55 88 PPM 098828 08:36:06.8 +21:24:19 8.4 0.98 86 PPM 098857 08:38:07.9 +22:05:03 9.0 0.19 87 9694_Lycomedes 08:38:55.3 +22:07:55 15.8 87 Positions are for equinox of date
Star training set for 9694_Lycomedes, (2025/03/04 01:24UT) Object RA Dec mag sep mel Pollux 07:45:17.8 +28:01:33 1.1 13.14 74 43Gam Cnc 08:43:17.0 +21:28:06 4.7 1.55 88 PPM 098828 08:34:39.1 +21:29:35 8.4 0.98 86 PPM 098857 08:36:39.9 +22:10:23 9.0 0.19 87 9694_Lycomedes 08:37:27.3 +22:13:16 15.8 87 Positions are for J2000