Occultation event with (11395) Iphinous, event index number 3267
Regions able to see the event: SAmericaN,SAfrica
Geocentric closest approach at 2026/02/19 03:58:03 UTC
J2000 position of star is 10:57:42.3 -16:12:09
Equinox of date position of star is 10:58:59.9 -16:20:34
Star is 160 degrees from the moon. Moon is 3% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.3
Use an exposure time of 1.25 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 23% with SNR of 0.7 for the occulted depth (per occulted point)
Apparent velocity is 16.2 km/sec on the sky relative to the star, or, 17.2 arcsec/hr.
Position angle of asteroid motion is 112.9 degrees
The recommended exposure time corresponds to 20.2 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 3391.2 km/arcsec.
Diameter estimates:
62.0 km assuming a 5% albedo, maximum of 3.8 sec for a central chord
25.3 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 69.0 km used for deployment plan.
Star training set for 11395_Iphinous, (2026/02/19 03:58UT) Object RA Dec mag sep mel Regulus 10:09:45.7 +11:50:18 1.3 30.70 159 4Gam Crv 12:17:09.2 -17:41:13 2.6 18.72 156 PPM 223760 11:00:48.5 -16:29:39 5.3 0.46 160 PPM 223686 10:57:48.9 -15:42:36 8.3 0.69 161 PPM 223738 10:59:50.7 -16:34:37 9.4 0.31 160 11395_Iphinous 10:58:59.9 -16:20:34 15.3 160 Positions are for equinox of date
Star training set for 11395_Iphinous, (2026/02/19 03:58UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 30.70 159 4Gam Crv 12:15:48.1 -17:32:30 2.6 18.72 156 PPM 223760 10:59:30.8 -16:21:13 5.3 0.46 160 PPM 223686 10:56:31.2 -15:34:12 8.3 0.69 161 PPM 223738 10:58:33.1 -16:26:12 9.4 0.31 160 11395_Iphinous 10:57:42.3 -16:12:09 15.3 160 Positions are for J2000