Occultation event with (4722) Agelaos, event index number 4884
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/25 23:01:34 UTC
J2000 position of star is 05:09:55.7 +24:59:13
Equinox of date position of star is 05:11:34.8 +25:01:08
Star is 5 degrees from the moon. Moon is 97% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=14.6
Use an exposure time of 1.45 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 14% with SNR of 0.4 for the occulted depth (per occulted point)
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 20.0 arcsec/hr.
Position angle of asteroid motion is 93.7 degrees
The recommended exposure time corresponds to 22.6 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 37.4 km.
The sky-plane scale is 2799.8 km/arcsec.
Diameter estimates:
57.3 km assuming a 5% albedo, maximum of 3.7 sec for a central chord
23.4 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 50.4 km used for deployment plan.
Star training set for 4722_Agelaos, (2026/11/25 23:02UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 11.62 16 Alnath 05:27:59.7 +28:37:39 1.6 5.14 1 103 Tau 05:09:45.2 +24:17:53 5.3 0.83 5 PPM 094178 05:14:42.1 +24:25:36 8.4 0.92 4 PPM 094145 05:12:28.8 +24:54:04 10.0 0.24 4 PPM 094134 05:11:46.7 +25:08:06 10.4 0.12 4 4722_Agelaos 05:11:34.8 +25:01:08 14.6 4 Positions are for equinox of date
Star training set for 4722_Agelaos, (2026/11/25 23:02UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 11.62 16 Alnath 05:26:17.6 +28:36:22 1.6 5.14 1 103 Tau 05:08:06.6 +24:15:54 5.3 0.83 5 PPM 094178 05:13:03.4 +24:23:48 8.4 0.92 4 PPM 094145 05:10:49.8 +24:52:11 10.0 0.24 4 PPM 094134 05:10:07.5 +25:06:11 10.4 0.12 4 4722_Agelaos 05:09:55.7 +24:59:13 14.6 5 Positions are for J2000