Occultation event with (5476) Mulius, event index number 3940
Regions able to see the event: Australia
Geocentric closest approach at 2026/08/04 19:36:20 UTC
J2000 position of star is 05:33:22.5 +12:57:11
Equinox of date position of star is 05:34:52.4 +12:58:11
Star is 59 degrees from the moon. Moon is 64% illuminated.
Stellar brightness G=14.7, apparent brightess of occulting body is G=16.7
Use an exposure time of 0.25 seconds with the standard RECON-QHY system.
SNR of 5.0 per integration for unocculted signal
Expected flux drop is 86% with SNR of 4.3 for the occulted depth (per occulted point)
Apparent velocity is 31.8 km/sec on the sky relative to the star, or, 26.3 arcsec/hr.
Position angle of asteroid motion is 96.9 degrees
The recommended exposure time corresponds to 8.0 km per image.
The 1-sigma error in the time of the event is 0.2 seconds.
The 1-sigma cross-track error in the shadow position is 26.9 km.
The sky-plane scale is 4354.3 km/arcsec.
Diameter estimates:
42.7 km assuming a 5% albedo, maximum of 1.3 sec for a central chord
17.4 km assuming a 30% albedo, maximum of 0.5 sec for a central chord
Cross-track diameter of 35.1 km used for deployment plan.
Star training set for 5476_Mulius, (2026/08/04 19:36UT) Object RA Dec mag sep mel Betelgeuse 05:56:36.7 +07:24:35 0.4 7.71 65 Bellatrix 05:26:33.5 +06:22:18 1.6 6.91 58 35 Ori 05:35:25.1 +14:19:18 5.6 1.36 59 PPM 121142 05:36:50.6 +13:17:58 7.9 0.58 59 PPM 121087 05:34:24.3 +13:04:07 9.8 0.15 59 5476_Mulius 05:34:52.4 +12:58:11 16.7 59 Positions are for equinox of date
Star training set for 5476_Mulius, (2026/08/04 19:36UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 7.71 65 Bellatrix 05:25:07.8 +06:20:58 1.6 6.91 58 35 Ori 05:33:54.3 +14:18:20 5.6 1.36 59 PPM 121142 05:35:20.5 +13:17:02 7.9 0.58 59 PPM 121087 05:32:54.4 +13:03:06 9.8 0.15 59 5476_Mulius 05:33:22.5 +12:57:11 16.7 59 Positions are for J2000