Occultation event with (4828) Misenus, event index number 4525
Regions able to see the event: US
Geocentric closest approach at 2026/10/30 23:25:46 UTC
J2000 position of star is 03:45:43.1 +36:45:15
Equinox of date position of star is 03:47:28.0 +36:50:11
Star is 42 degrees from the moon. Moon is 71% illuminated.
Stellar brightness G=12.8, apparent brightess of occulting body is G=15.4
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 12.2 per integration for unocculted signal
Expected flux drop is 91% with SNR of 11.1 for the occulted depth (per occulted point)
Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 17.6 arcsec/hr.
Position angle of asteroid motion is 95.3 degrees
The recommended exposure time corresponds to 1.8 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 25.5 km.
The sky-plane scale is 3024.0 km/arcsec.
Diameter estimates:
48.1 km assuming a 5% albedo, maximum of 3.3 sec for a central chord
19.6 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 46.0 km used for deployment plan.
Star training set for 4828_Misenus, (2026/10/30 23:26UT) Object RA Dec mag sep mel Aldebaran 04:37:27.8 +16:33:40 0.8 23.09 34 44Zet Per 03:55:49.5 +31:57:40 2.8 5.17 40 PPM 068741 03:46:16.1 +36:32:33 5.6 0.38 42 PPM 068743 03:46:19.3 +35:56:18 8.3 0.93 42 PPM 068734 03:45:48.0 +36:57:35 9.0 0.36 42 PPM 068764 03:48:23.9 +37:02:10 10.9 0.27 42 4828_Misenus 03:47:28.0 +36:50:11 15.4 41 Positions are for equinox of date
Star training set for 4828_Misenus, (2026/10/30 23:26UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 23.09 34 44Zet Per 03:54:07.9 +31:53:01 2.8 5.17 40 PPM 068741 03:44:31.5 +36:27:35 5.6 0.38 42 PPM 068743 03:44:35.1 +35:51:20 8.3 0.93 42 PPM 068734 03:44:03.1 +36:52:37 9.0 0.36 42 PPM 068764 03:46:38.8 +36:57:16 10.9 0.27 42 4828_Misenus 03:45:43.1 +36:45:15 15.4 42 Positions are for J2000