Occultation event with (4832) Palinurus, event index number 1533
Regions able to see the event: SMexico
Geocentric closest approach at 2025/11/18 04:17:25 UTC
J2000 position of star is 03:43:39.5 -04:24:12
Equinox of date position of star is 03:44:56.9 -04:19:22
Star is 147 degrees from the moon. Moon is 4% illuminated.
Stellar brightness G=13.5, apparent brightess of occulting body is G=14.7
Use an exposure time of 0.17 seconds with the standard RECON-QHY system.
SNR of 9.8 per integration for unocculted signal
Expected flux drop is 75% with SNR of 7.4 for the occulted depth (per occulted point)
Apparent velocity is 16.3 km/sec on the sky relative to the star, or, 20.4 arcsec/hr.
Position angle of asteroid motion is 81.3 degrees
The recommended exposure time corresponds to 2.8 km per image.
The 1-sigma error in the time of the event is 0.9 seconds.
The 1-sigma cross-track error in the shadow position is 33.3 km.
The sky-plane scale is 2878.8 km/arcsec.
Diameter estimates:
60.0 km assuming a 5% albedo, aximum of 3.7 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, (2025/11/18 04:17UT) Object RA Dec mag sep mel Rigel 05:15:47.0 -08:10:25 0.1 22.89 126 Menkar 03:03:38.1 +04:11:23 2.5 13.38 160 22 Eri 03:41:55.3 -05:07:43 5.5 1.10 147 PPM 186100 03:44:00.9 -04:31:29 8.2 0.31 147 PPM 186120 03:45:12.2 -04:11:57 9.1 0.14 147 4832_Palinurus 03:44:56.9 -04:19:22 14.7 147 Positions are for equinox of date
Star training set for 4832_Palinurus, (2025/11/18 04:17UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 22.89 126 Menkar 03:02:16.8 +04:05:21 2.5 13.38 160 22 Eri 03:40:38.3 -05:12:38 5.5 1.10 147 PPM 186100 03:42:43.6 -04:36:20 8.2 0.31 147 PPM 186120 03:43:54.7 -04:16:46 9.1 0.14 147 4832_Palinurus 03:43:39.5 -04:24:12 14.7 147 Positions are for J2000