Occultation event with (4828) Misenus, event index number 3978
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/08/10 10:13:07 UTC
J2000 position of star is 03:46:52.0 +32:30:03
Equinox of date position of star is 03:48:32.8 +32:34:54
Star is 45 degrees from the moon. Moon is 8% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=16.1
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 4.8 per integration for unocculted signal
Expected flux drop is 66% with SNR of 3.2 for the occulted depth (per occulted point)
Apparent velocity is 21.4 km/sec on the sky relative to the star, or, 20.3 arcsec/hr.
Position angle of asteroid motion is 57.0 degrees
The recommended exposure time corresponds to 10.7 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 16.5 km.
The sky-plane scale is 3791.1 km/arcsec.
Diameter estimates:
48.1 km assuming a 5% albedo, maximum of 2.2 sec for a central chord
19.6 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 46.0 km used for deployment plan.
Star training set for 4828_Misenus, (2026/08/10 10:13UT) Object RA Dec mag sep mel Aldebaran 04:37:27.0 +16:33:38 0.8 19.47 38 44Zet Per 03:55:48.7 +31:57:37 2.8 1.66 43 38Omi Per 03:45:59.7 +32:22:13 3.7 0.58 45 PPM 068780 03:49:29.6 +32:16:32 6.8 0.37 45 PPM 068767 03:48:27.9 +32:41:10 9.8 0.11 45 4828_Misenus 03:48:32.8 +32:34:54 16.1 44 Positions are for equinox of date
Star training set for 4828_Misenus, (2026/08/10 10:13UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 19.47 38 44Zet Per 03:54:07.9 +31:53:01 2.8 1.66 43 38Omi Per 03:44:19.1 +32:17:17 3.7 0.58 45 PPM 068780 03:47:49.0 +32:11:43 6.8 0.37 45 PPM 068767 03:46:47.0 +32:36:19 9.8 0.11 45 4828_Misenus 03:46:52.0 +32:30:03 16.1 45 Positions are for J2000