Occultation event with (4348) Poulydamas, event index number 4971
Regions able to see the event: SMexico
Geocentric closest approach at 2026/12/01 04:57:17 UTC
J2000 position of star is 04:48:41.5 +17:05:12
Equinox of date position of star is 04:50:14.8 +17:07:55
Star is 85 degrees from the moon. Moon is 51% illuminated.
Stellar brightness G=13.2, apparent brightess of occulting body is G=14.0
Use an exposure time of 0.14 seconds with the standard RECON-QHY system.
SNR of 9.6 per integration for unocculted signal
Expected flux drop is 67% with SNR of 6.4 for the occulted depth (per occulted point)
Apparent velocity is 16.5 km/sec on the sky relative to the star, or, 20.9 arcsec/hr.
Position angle of asteroid motion is 76.8 degrees
The recommended exposure time corresponds to 2.3 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 33.0 km.
The sky-plane scale is 2829.1 km/arcsec.
Diameter estimates:
70.5 km assuming a 5% albedo, maximum of 4.3 sec for a central chord
28.8 km assuming a 30% albedo, maximum of 1.7 sec for a central chord
Cross-track diameter of 82.0 km used for deployment plan.
Star training set for 4348_Poulydamas, (2026/12/01 04:57UT) Object RA Dec mag sep mel Aldebaran 04:37:28.1 +16:33:40 0.8 3.11 88 Bellatrix 05:26:34.6 +06:22:18 1.6 13.95 78 97 Tau 04:52:57.1 +18:53:00 5.1 1.87 85 PPM 120314 04:51:57.5 +17:14:48 7.6 0.42 85 4348_Poulydama 04:50:14.8 +17:07:55 14.0 85 Positions are for equinox of date
Star training set for 4348_Poulydamas, (2026/12/01 04:57UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 3.11 88 Bellatrix 05:25:07.8 +06:20:58 1.6 13.95 78 97 Tau 04:51:22.6 +18:50:23 5.1 1.87 85 PPM 120314 04:50:24.1 +17:12:08 7.6 0.42 85 4348_Poulydama 04:48:41.5 +17:05:12 14.0 85 Positions are for J2000