Occultation event with (5476) Mulius, event index number 4269
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/09/19 07:21:29 UTC
J2000 position of star is 05:58:11.1 +11:25:49
Equinox of date position of star is 05:59:40.4 +11:25:51
Star is 163 degrees from the moon. Moon is 54% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=16.6
Use an exposure time of 0.55 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 62% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 15.2 km/sec on the sky relative to the star, or, 14.0 arcsec/hr.
Position angle of asteroid motion is 117.9 degrees
The recommended exposure time corresponds to 8.3 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 23.0 km.
The sky-plane scale is 3903.8 km/arcsec.
Diameter estimates:
42.7 km assuming a 5% albedo, maximum of 2.8 sec for a central chord
17.4 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 35.1 km used for deployment plan.
Star training set for 5476_Mulius, (2026/09/19 07:21UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.1 +07:24:35 0.4 4.09 159 Bellatrix 05:26:33.9 +06:22:18 1.6 9.61 156 PPM 121631 05:58:19.1 +11:31:20 5.9 0.34 164 PPM 121649 05:58:46.5 +11:26:39 8.4 0.22 163 5476_Mulius 05:59:40.4 +11:25:51 16.6 163 Positions are for equinox of date
Star training set for 5476_Mulius, (2026/09/19 07:21UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 4.09 159 Bellatrix 05:25:07.8 +06:20:58 1.6 9.61 156 PPM 121631 05:56:49.6 +11:31:14 5.9 0.34 164 PPM 121649 05:57:17.1 +11:26:35 8.4 0.22 163 5476_Mulius 05:58:11.1 +11:25:49 16.6 163 Positions are for J2000