Occultation event with (1873) Agenor, event index number 3957
Regions able to see the event: SAmericaN,SAmericaS
Geocentric closest approach at 2026/08/08 08:53:24 UTC
J2000 position of star is 03:27:27.3 +09:26:09
Equinox of date position of star is 03:28:53.8 +09:31:37
Star is 28 degrees from the moon. Moon is 25% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=16.1
Use an exposure time of 1.05 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 41% with SNR of 1.2 for the occulted depth (per occulted point)
Apparent velocity is 16.6 km/sec on the sky relative to the star, or, 14.6 arcsec/hr.
Position angle of asteroid motion is 105.9 degrees
The recommended exposure time corresponds to 17.5 km per image.
The 1-sigma error in the time of the event is 0.5 seconds.
The 1-sigma cross-track error in the shadow position is 24.7 km.
The sky-plane scale is 4101.2 km/arcsec.
Diameter estimates:
56.0 km assuming a 5% albedo, maximum of 3.4 sec for a central chord
22.9 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 50.8 km used for deployment plan.
Star training set for 1873_Agenor, (2026/08/08 08:53UT) Object RA Dec mag sep mel Aldebaran 04:37:27.0 +16:33:38 0.8 18.10 12 Menkar 03:03:40.4 +04:11:33 2.5 8.22 36 2Xi Tau 03:28:36.9 +09:49:25 3.7 0.30 28 PPM 146583 03:29:06.1 +08:51:21 8.1 0.67 28 PPM 146573 03:28:47.5 +09:20:51 9.4 0.18 28 1873_Agenor 03:28:53.8 +09:31:37 16.1 28 Positions are for equinox of date
Star training set for 1873_Agenor, (2026/08/08 08:53UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 18.10 12 Menkar 03:02:16.8 +04:05:21 2.5 8.22 36 2Xi Tau 03:27:10.3 +09:43:57 3.7 0.30 28 PPM 146583 03:27:39.9 +08:45:54 8.1 0.67 28 PPM 146573 03:27:21.1 +09:15:23 9.4 0.18 28 1873_Agenor 03:27:27.3 +09:26:09 16.1 28 Positions are for J2000