Occultation event with (4828) Misenus, event index number 4357
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/10/07 03:00:48 UTC
J2000 position of star is 03:56:12.5 +36:05:29
Equinox of date position of star is 03:57:57.2 +36:10:03
Star is 86 degrees from the moon. Moon is 14% illuminated.
Stellar brightness G=16.7, apparent brightess of occulting body is G=15.6
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 28% with SNR of 0.8 for the occulted depth (per occulted point)
Apparent velocity is 9.2 km/sec on the sky relative to the star, or, 10.4 arcsec/hr.
Position angle of asteroid motion is 127.9 degrees
The recommended exposure time corresponds to 12.0 km per image.
The 1-sigma error in the time of the event is 1.0 seconds.
The 1-sigma cross-track error in the shadow position is 24.6 km.
The sky-plane scale is 3185.3 km/arcsec.
Diameter estimates:
48.1 km assuming a 5% albedo, maximum of 5.2 sec for a central chord
19.6 km assuming a 30% albedo, maximum of 2.1 sec for a central chord
Cross-track diameter of 46.0 km used for deployment plan.
Star training set for 4828_Misenus, (2026/10/07 03:01UT) Object RA Dec mag sep mel Aldebaran 04:37:27.6 +16:33:39 0.8 21.48 80 44Zet Per 03:55:49.3 +31:57:39 2.8 4.23 87 46Xi Per 04:00:42.6 +35:51:56 4.0 0.63 85 PPM 068927 03:58:30.0 +36:04:41 8.5 0.14 86 PPM 068920 03:58:07.7 +36:13:40 11.0 0.07 86 4828_Misenus 03:57:57.2 +36:10:03 15.6 85 Positions are for equinox of date
Star training set for 4828_Misenus, (2026/10/07 03:01UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 21.48 80 44Zet Per 03:54:07.9 +31:53:01 2.8 4.23 87 46Xi Per 03:58:57.9 +35:47:28 4.0 0.63 85 PPM 068927 03:56:45.3 +36:00:08 8.5 0.14 86 PPM 068920 03:56:22.9 +36:09:07 11.0 0.07 86 4828_Misenus 03:56:12.5 +36:05:29 15.6 86 Positions are for J2000