Occultation event with (4867) Polites, event index number 3447
Regions able to see the event: UAE
Geocentric closest approach at 2026/03/16 16:16:45 UTC
J2000 position of star is 02:28:57.2 +40:40:52
Equinox of date position of star is 02:30:36.1 +40:47:49
Star is 83 degrees from the moon. Moon is 7% illuminated.
Stellar brightness G=16.3, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 38% with SNR of 1.2 for the occulted depth (per occulted point)
Apparent velocity is 31.5 km/sec on the sky relative to the star, or, 27.2 arcsec/hr.
Position angle of asteroid motion is 85.1 degrees
The recommended exposure time corresponds to 25.2 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 4167.1 km/arcsec.
Diameter estimates:
62.5 km assuming a 5% albedo, maximum of 2.0 sec for a central chord
25.5 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 57.3 km used for deployment plan.
Star training set for 4867_Polites, (2026/03/16 16:17UT) Object RA Dec mag sep mel Aldebaran 04:37:25.7 +16:33:35 0.8 36.53 103 57Gam1And 02:05:31.2 +42:27:15 2.3 4.97 80 PPM 045035 02:24:28.8 +41:30:49 6.1 1.36 83 PPM 045099 02:29:07.8 +41:09:52 7.8 0.46 83 PPM 045156 02:32:21.5 +40:49:00 9.0 0.33 84 4867_Polites 02:30:36.1 +40:47:49 15.7 84 Positions are for equinox of date
Star training set for 4867_Polites, (2026/03/16 16:17UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 36.53 103 57Gam1And 02:03:54.1 +42:19:46 2.3 4.97 80 PPM 045035 02:22:50.1 +41:23:44 6.1 1.36 83 PPM 045099 02:27:28.8 +41:02:53 7.8 0.46 83 PPM 045156 02:30:42.4 +40:42:06 9.0 0.33 84 4867_Polites 02:28:57.2 +40:40:52 15.7 83 Positions are for J2000