Occultation event with (5041) Theotes, event index number 3317
Regions able to see the event: Australia
Geocentric closest approach at 2026/02/26 13:15:03 UTC
J2000 position of star is 13:25:36.4 -05:17:02
Equinox of date position of star is 13:26:58.1 -05:25:09
Star is 107 degrees from the moon. Moon is 73% illuminated.
Stellar brightness G=11.8, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 24.3 per integration for unocculted signal
Expected flux drop is 98% with SNR of 23.8 for the occulted depth (per occulted point)
Apparent velocity is 8.5 km/sec on the sky relative to the star, or, 9.7 arcsec/hr.
Position angle of asteroid motion is 103.7 degrees
The recommended exposure time corresponds to 1.0 km per image.
The 1-sigma error in the time of the event is 3.0 seconds.
The 1-sigma cross-track error in the shadow position is 24.9 km.
The sky-plane scale is 3152.7 km/arcsec.
Diameter estimates:
41.1 km assuming a 5% albedo, maximum of 4.9 sec for a central chord
16.8 km assuming a 30% albedo, maximum of 2.0 sec for a central chord
Cross-track diameter of 41.9 km used for deployment plan.
Star training set for 5041_Theotes, (2026/02/26 13:15UT) Object RA Dec mag sep mel Spica 13:26:34.5 -11:17:49 1.0 5.88 109 66 Vir 13:25:55.1 -05:18:00 6.1 0.29 106 PPM 196483 13:26:08.7 -05:23:30 8.4 0.21 106 5041_Theotes 13:26:58.1 -05:25:09 15.9 107 Positions are for equinox of date
Star training set for 5041_Theotes, (2026/02/26 13:15UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 5.88 109 66 Vir 13:24:33.5 -05:09:51 6.1 0.29 106 PPM 196483 13:24:47.1 -05:15:21 8.4 0.21 106 5041_Theotes 13:25:36.4 -05:17:02 15.9 107 Positions are for J2000