Occultation event with (2920) Automedon, event index number 3826
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/07/02 01:19:06 UTC
J2000 position of star is 11:42:20.2 -12:38:55
Equinox of date position of star is 11:43:41.1 -12:47:44
Star is 120 degrees from the moon. Moon is 96% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=14.5
Use an exposure time of 1.10 seconds with the standard RECON-QHY system.
SNR of 4.3 per integration for unocculted signal
Expected flux drop is 21% with SNR of 0.9 for the occulted depth (per occulted point)
Apparent velocity is 19.5 km/sec on the sky relative to the star, or, 18.5 arcsec/hr.
Position angle of asteroid motion is 84.0 degrees
The recommended exposure time corresponds to 21.5 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 41.7 km.
The sky-plane scale is 3796.7 km/arcsec.
Diameter estimates:
102.3 km assuming a 5% albedo, maximum of 5.2 sec for a central chord
41.8 km assuming a 30% albedo, maximum of 2.1 sec for a central chord
Cross-track diameter of 88.6 km used for deployment plan.
Star training set for 2920_Automedon, (2026/07/02 01:19UT) Object RA Dec mag sep mel Spica 13:26:35.6 -11:17:56 1.0 25.19 99 4Gam Crv 12:17:10.4 -17:41:20 2.6 9.44 111 24Iot Crt 11:40:00.9 -13:20:53 5.6 1.05 121 PPM 224723 11:40:51.1 -13:19:56 6.7 0.87 120 PPM 224782 11:43:31.6 -12:54:59 9.6 0.13 120 2920_Automedon 11:43:41.1 -12:47:44 14.5 120 Positions are for equinox of date
Star training set for 2920_Automedon, (2026/07/02 01:19UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 25.19 99 4Gam Crv 12:15:48.1 -17:32:30 2.6 9.44 111 24Iot Crt 11:38:40.2 -13:12:04 5.6 1.05 121 PPM 224723 11:39:30.3 -13:11:07 6.7 0.87 120 PPM 224782 11:42:10.7 -12:46:09 9.6 0.13 120 2920_Automedon 11:42:20.2 -12:38:55 14.5 120 Positions are for J2000