Occultation event with (4348) Poulydamas, event index number 4090
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/08/24 02:19:49 UTC
J2000 position of star is 04:53:48.6 +19:33:41
Equinox of date position of star is 04:55:22.7 +19:36:11
Star is 149 degrees from the moon. Moon is 84% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.1
Use an exposure time of 1.30 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 20% with SNR of 0.6 for the occulted depth (per occulted point)
Apparent velocity is 20.4 km/sec on the sky relative to the star, or, 20.4 arcsec/hr.
Position angle of asteroid motion is 92.4 degrees
The recommended exposure time corresponds to 26.5 km per image.
The 1-sigma error in the time of the event is 0.1 seconds.
The 1-sigma cross-track error in the shadow position is 33.7 km.
The sky-plane scale is 3603.5 km/arcsec.
Diameter estimates:
70.5 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
28.8 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 82.0 km used for deployment plan.
Star training set for 4348_Poulydamas, (2026/08/24 02:20UT) Object RA Dec mag sep mel Aldebaran 04:37:27.2 +16:33:38 0.8 5.23 144 Alnath 05:27:58.7 +28:37:39 1.6 11.69 158 97 Tau 04:52:56.2 +18:52:58 5.1 0.92 148 PPM 120385 04:56:32.6 +19:31:34 7.2 0.28 149 4348_Poulydama 04:55:22.7 +19:36:11 15.1 149 Positions are for equinox of date
Star training set for 4348_Poulydamas, (2026/08/24 02:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 5.23 144 Alnath 05:26:17.6 +28:36:22 1.6 11.69 158 97 Tau 04:51:22.6 +18:50:23 5.1 0.92 148 PPM 120385 04:54:58.5 +19:29:07 7.2 0.28 149 4348_Poulydama 04:53:48.6 +19:33:41 15.1 149 Positions are for J2000