Occultation event with (5023) Agapenor, event index number 960
Regions able to see the event: Australia
Geocentric closest approach at 2025/05/09 12:14:51 UTC
J2000 position of star is 08:48:11.0 +15:04:03
Equinox of date position of star is 08:49:35.7 +14:58:22
Star is 64 degrees from the moon. Moon is 91% illuminated.
Stellar brightness G=16.7, apparent brightess of occulting body is G=16.1
Use an exposure time of 1.35 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 37% with SNR of 1.1 for the occulted depth (per occulted point)
Apparent velocity is 16.5 km/sec on the sky relative to the star, or, 15.6 arcsec/hr.
Position angle of asteroid motion is 338.3 degrees
The recommended exposure time corresponds to 22.3 km per image.
The 1-sigma error in the time of the event is 2.1 seconds.
The 1-sigma cross-track error in the shadow position is 22.7 km.
The sky-plane scale is 3820.7 km/arcsec.
Diameter estimates:
49.0 km assuming a 5% albedo, aximum of 3.0 sec for a central chord
20.0 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 49.0 km used for deployment plan.
Star training set for 5023_Agapenor, (2025/05/09 12:15UT) Object RA Dec mag sep mel Pollux 07:46:51.8 +27:57:46 1.1 19.50 81 54 Cnc 08:52:26.0 +15:15:18 6.4 0.74 63 PPM 125740 08:48:43.0 +15:14:05 7.9 0.34 64 PPM 125757 08:49:20.0 +15:08:41 9.5 0.18 64 5023_Agapenor 08:49:35.7 +14:58:22 16.1 64 Positions are for equinox of date
Star training set for 5023_Agapenor, (2025/05/09 12:15UT) Object RA Dec mag sep mel Pollux 07:45:17.8 +28:01:33 1.1 19.50 81 54 Cnc 08:51:01.3 +15:21:04 6.4 0.74 63 PPM 125740 08:47:18.1 +15:19:45 7.9 0.34 64 PPM 125757 08:47:55.2 +15:14:22 9.5 0.18 64 5023_Agapenor 08:48:11.0 +15:04:03 16.1 64 Positions are for J2000