Occultation event with (11395) Iphinous, event index number 3286
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/02/21 23:05:56 UTC
J2000 position of star is 10:56:27.7 -16:04:14
Equinox of date position of star is 10:57:45.3 -16:12:39
Star is 140 degrees from the moon. Moon is 22% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=15.2
Use an exposure time of 1.00 seconds with the standard RECON-QHY system.
SNR of 7.0 per integration for unocculted signal
Expected flux drop is 45% with SNR of 3.1 for the occulted depth (per occulted point)
Apparent velocity is 16.7 km/sec on the sky relative to the star, or, 17.8 arcsec/hr.
Position angle of asteroid motion is 114.7 degrees
The recommended exposure time corresponds to 16.7 km per image.
The 1-sigma error in the time of the event is 1.0 seconds.
The 1-sigma cross-track error in the shadow position is 28.1 km.
The sky-plane scale is 3379.7 km/arcsec.
Diameter estimates:
62.0 km assuming a 5% albedo, maximum of 3.7 sec for a central chord
25.3 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 69.0 km used for deployment plan.
Star training set for 11395_Iphinous, (2026/02/21 23:06UT) Object RA Dec mag sep mel Regulus 10:09:45.7 +11:50:18 1.3 30.46 120 4Gam Crv 12:17:09.3 -17:41:13 2.6 19.04 159 PPM 223760 11:00:48.6 -16:29:40 5.3 0.79 140 PPM 223686 10:57:48.9 -15:42:37 8.3 0.50 140 PPM 223671 10:57:13.9 -16:25:55 9.4 0.25 139 11395_Iphinous 10:57:45.3 -16:12:39 15.2 140 Positions are for equinox of date
Star training set for 11395_Iphinous, (2026/02/21 23:06UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 30.46 120 4Gam Crv 12:15:48.1 -17:32:30 2.6 19.04 159 PPM 223760 10:59:30.8 -16:21:13 5.3 0.79 140 PPM 223686 10:56:31.2 -15:34:12 8.3 0.50 140 PPM 223671 10:55:56.3 -16:17:31 9.4 0.25 139 11395_Iphinous 10:56:27.7 -16:04:14 15.2 140 Positions are for J2000