Occultation event with (5041) Theotes, event index number 3828
Regions able to see the event: Australia
Geocentric closest approach at 2026/07/02 10:09:26 UTC
J2000 position of star is 12:50:09.9 -04:16:31
Equinox of date position of star is 12:51:32.0 -04:25:09
Star is 114 degrees from the moon. Moon is 95% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=16.4
Use an exposure time of 0.85 seconds with the standard RECON-QHY system.
SNR of 7.1 per integration for unocculted signal
Expected flux drop is 71% with SNR of 5.1 for the occulted depth (per occulted point)
Apparent velocity is 11.6 km/sec on the sky relative to the star, or, 11.6 arcsec/hr.
Position angle of asteroid motion is 127.2 degrees
The recommended exposure time corresponds to 9.9 km per image.
The 1-sigma error in the time of the event is 2.8 seconds.
The 1-sigma cross-track error in the shadow position is 11.5 km.
The sky-plane scale is 3611.8 km/arcsec.
Diameter estimates:
41.1 km assuming a 5% albedo, maximum of 3.5 sec for a central chord
16.8 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 41.9 km used for deployment plan.
Star training set for 5041_Theotes, (2026/07/02 10:09UT) Object RA Dec mag sep mel Spica 13:26:35.6 -11:17:56 1.0 11.07 103 PPM 195939 12:55:00.3 -04:22:07 6.5 0.87 113 PPM 195846 12:48:56.2 -04:49:32 7.5 0.76 115 PPM 195872 12:51:00.5 -04:16:54 9.6 0.19 114 5041_Theotes 12:51:32.0 -04:25:09 16.4 114 Positions are for equinox of date
Star training set for 5041_Theotes, (2026/07/02 10:09UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 11.07 103 PPM 195939 12:53:38.1 -04:13:31 6.5 0.87 113 PPM 195846 12:47:34.1 -04:40:53 7.5 0.76 115 PPM 195872 12:49:38.5 -04:08:15 9.6 0.19 114 5041_Theotes 12:50:09.9 -04:16:31 16.4 114 Positions are for J2000