Occultation event with (4828) Misenus, event index number 4128
Regions able to see the event: US
Geocentric closest approach at 2026/08/30 12:44:47 UTC
J2000 position of star is 03:55:23.8 +33:55:42
Equinox of date position of star is 03:57:06.4 +34:00:17
Star is 58 degrees from the moon. Moon is 94% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 4.0 per integration for unocculted signal
Expected flux drop is 49% with SNR of 2.0 for the occulted depth (per occulted point)
Apparent velocity is 13.7 km/sec on the sky relative to the star, or, 13.8 arcsec/hr.
Position angle of asteroid motion is 42.6 degrees
The recommended exposure time corresponds to 11.0 km per image.
The 1-sigma error in the time of the event is 1.7 seconds.
The 1-sigma cross-track error in the shadow position is 11.2 km.
The sky-plane scale is 3568.9 km/arcsec.
Diameter estimates:
48.1 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
19.6 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 46.0 km used for deployment plan.
Star training set for 4828_Misenus, (2026/08/30 12:45UT) Object RA Dec mag sep mel Aldebaran 04:37:27.2 +16:33:39 0.8 19.66 65 44Zet Per 03:55:48.9 +31:57:38 2.8 2.06 58 PPM 068848 03:53:36.4 +34:26:15 5.6 0.84 58 PPM 068856 03:54:01.6 +34:18:00 7.5 0.70 58 PPM 068925 03:58:21.6 +34:13:50 8.7 0.34 59 PPM 068897 03:56:04.8 +34:00:00 10.5 0.21 58 4828_Misenus 03:57:06.4 +34:00:17 16.0 59 Positions are for equinox of date
Star training set for 4828_Misenus, (2026/08/30 12:45UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 19.66 65 44Zet Per 03:54:07.9 +31:53:01 2.8 2.06 58 PPM 068848 03:51:53.7 +34:21:34 5.6 0.84 58 PPM 068856 03:52:18.9 +34:13:20 7.5 0.70 58 PPM 068925 03:56:38.8 +34:09:18 8.7 0.34 59 PPM 068897 03:54:22.3 +33:55:24 10.5 0.21 58 4828_Misenus 03:55:23.8 +33:55:42 16.0 58 Positions are for J2000