Occultation event with (3794) Sthenelos, event index number 3363
Regions able to see the event: Australia
Geocentric closest approach at 2026/03/06 17:22:50 UTC
J2000 position of star is 12:06:49.8 -03:01:07
Equinox of date position of star is 12:08:10.4 -03:09:52
Star is 22 degrees from the moon. Moon is 89% illuminated.
Stellar brightness G=16.2, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.70 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 44% with SNR of 1.3 for the occulted depth (per occulted point)
Apparent velocity is 17.4 km/sec on the sky relative to the star, or, 17.4 arcsec/hr.
Position angle of asteroid motion is 108.6 degrees
The recommended exposure time corresponds to 12.1 km per image.
The 1-sigma error in the time of the event is 1.6 seconds.
The 1-sigma cross-track error in the shadow position is 24.7 km.
The sky-plane scale is 3597.3 km/arcsec.
Diameter estimates:
47.2 km assuming a 5% albedo, maximum of 2.7 sec for a central chord
19.3 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 34.5 km used for deployment plan.
Star training set for 3794_Sthenelos, (2026/03/06 17:23UT) Object RA Dec mag sep mel Spica 13:26:34.6 -11:17:50 1.0 21.06 2 4Gam Crv 12:17:09.4 -17:41:14 2.6 14.69 17 PPM 178683 12:07:20.3 -03:16:39 6.4 0.24 22 PPM 178688 12:08:28.1 -03:03:58 11.2 0.12 22 3794_Sthenelos 12:08:10.4 -03:09:52 16.0 21 Positions are for equinox of date
Star training set for 3794_Sthenelos, (2026/03/06 17:23UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 21.06 2 4Gam Crv 12:15:48.1 -17:32:30 2.6 14.69 17 PPM 178683 12:05:59.8 -03:07:54 6.4 0.24 22 PPM 178688 12:07:07.5 -02:55:14 11.2 0.12 22 3794_Sthenelos 12:06:49.8 -03:01:07 16.0 22 Positions are for J2000