Occultation event with (1873) Agenor, event index number 1222
Regions able to see the event: US
Geocentric closest approach at 2025/08/12 04:26:51 UTC
J2000 position of star is 01:41:52.1 +10:32:19
Equinox of date position of star is 01:43:13.7 +10:40:02
Star is 31 degrees from the moon. Moon is 90% illuminated.
Stellar brightness G=15.9, apparent brightess of occulting body is G=16.0
Use an exposure time of 2.00 seconds with the standard RECON-QHY system.
SNR of 8.1 per integration for unocculted signal
Expected flux drop is 53% with SNR of 4.3 for the occulted depth (per occulted point)
Apparent velocity is 4.5 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
Position angle of asteroid motion is 163.6 degrees
The recommended exposure time corresponds to 8.9 km per image.
The 1-sigma error in the time of the event is 5.0 seconds.
The 1-sigma cross-track error in the shadow position is 6.5 km.
The sky-plane scale is 3802.1 km/arcsec.
Diameter estimates:
56.0 km assuming a 5% albedo, aximum of 12.6 sec for a central chord
22.9 km assuming a 30% albedo, maximum of 5.1 sec for a central chord
Cross-track diameter of 50.8 km used for deployment plan.
Star training set for 1873_Agenor, (2025/08/12 04:27UT) Object RA Dec mag sep mel Aldebaran 04:37:23.6 +16:33:31 0.8 42.65 74 6Bet Ari 01:56:03.6 +20:55:56 2.6 10.72 38 110Omi Psc 01:46:45.0 +09:17:08 4.3 1.63 31 PPM 117596 01:43:57.3 +10:22:22 7.5 0.34 31 1873_Agenor 01:43:13.7 +10:40:02 16.0 31 Positions are for equinox of date
Star training set for 1873_Agenor, (2025/08/12 04:27UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 42.65 74 6Bet Ari 01:54:38.6 +20:48:26 2.6 10.72 38 110Omi Psc 01:45:23.8 +09:09:29 4.3 1.63 31 PPM 117596 01:42:35.8 +10:14:40 7.5 0.34 31 1873_Agenor 01:41:52.1 +10:32:19 16.0 31 Positions are for J2000