Occultation event with (4832) Palinurus, event index number 4252
Regions able to see the event: Europe
Geocentric closest approach at 2026/09/17 05:09:34 UTC
J2000 position of star is 06:09:04.9 +07:53:38
Equinox of date position of star is 06:10:32.0 +07:53:15
Star is 147 degrees from the moon. Moon is 35% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 6.3 per integration for unocculted signal
Expected flux drop is 57% with SNR of 3.6 for the occulted depth (per occulted point)
Apparent velocity is 16.5 km/sec on the sky relative to the star, or, 15.6 arcsec/hr.
Position angle of asteroid motion is 107.5 degrees
The recommended exposure time corresponds to 12.4 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 35.8 km.
The sky-plane scale is 3809.1 km/arcsec.
Diameter estimates:
60.0 km assuming a 5% albedo, maximum of 3.6 sec for a central chord
24.5 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 52.1 km used for deployment plan.
Star training set for 4832_Palinurus, (2026/09/17 05:10UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.1 +07:24:35 0.4 3.48 149 Alhena 06:39:15.3 +16:22:27 1.9 11.01 145 PPM 150217 06:18:24.9 +07:02:27 6.4 2.13 145 PPM 150007 06:11:31.1 +07:37:15 7.9 0.36 147 PPM 149951 06:09:39.2 +07:43:25 9.6 0.27 147 4832_Palinurus 06:10:32.0 +07:53:15 15.7 147 Positions are for equinox of date
Star training set for 4832_Palinurus, (2026/09/17 05:10UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 3.48 149 Alhena 06:37:42.8 +16:23:56 1.9 11.01 145 PPM 150217 06:16:58.4 +07:03:08 6.4 2.13 145 PPM 150007 06:10:04.2 +07:37:40 7.9 0.36 147 PPM 149951 06:08:12.3 +07:43:45 9.6 0.27 147 4832_Palinurus 06:09:04.9 +07:53:38 15.7 147 Positions are for J2000