Occultation event with (5041) Theotes, event index number 3347
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/04 09:27:08 UTC
J2000 position of star is 13:23:56.6 -05:10:46
Equinox of date position of star is 13:25:18.2 -05:18:55
Star is 27 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.95 seconds with the standard RECON-QHY system.
SNR of 4.3 per integration for unocculted signal
Expected flux drop is 46% with SNR of 2.0 for the occulted depth (per occulted point)
Apparent velocity is 10.6 km/sec on the sky relative to the star, or, 12.2 arcsec/hr.
Position angle of asteroid motion is 104.5 degrees
The recommended exposure time corresponds to 10.0 km per image.
The 1-sigma error in the time of the event is 2.4 seconds.
The 1-sigma cross-track error in the shadow position is 23.6 km.
The sky-plane scale is 3108.8 km/arcsec.
Diameter estimates:
41.1 km assuming a 5% albedo, maximum of 3.9 sec for a central chord
16.8 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 41.9 km used for deployment plan.
Star training set for 5041_Theotes, (2026/03/04 09:27UT) Object RA Dec mag sep mel Spica 13:26:34.5 -11:17:50 1.0 5.99 29 66 Vir 13:25:55.2 -05:18:00 6.1 0.15 27 PPM 196471 13:25:18.1 -05:17:04 8.4 0.03 27 5041_Theotes 13:25:18.2 -05:18:55 15.9 27 Positions are for equinox of date
Star training set for 5041_Theotes, (2026/03/04 09:27UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 5.99 29 66 Vir 13:24:33.5 -05:09:51 6.1 0.15 27 PPM 196471 13:23:56.4 -05:08:55 8.4 0.03 27 5041_Theotes 13:23:56.6 -05:10:46 15.9 27 Positions are for J2000