Occultation event with (11395) Iphinous, event index number 858
Regions able to see the event: Australia
Geocentric closest approach at 2025/03/27 15:21:09 UTC
J2000 position of star is 08:38:29.2 -08:17:51
Equinox of date position of star is 08:39:43.0 -08:23:14
Star is 142 degrees from the moon. Moon is 5% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=15.6
Use an exposure time of 1.15 seconds with the standard RECON-QHY system.
Expected flux drop is 49% with SNR of 7.4 per integration
Apparent velocity is 12.9 km/sec on the sky relative to the star, or, 12.9 arcsec/hr.
The recommended exposure time corresponds to 14.8 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 54.1 km.
The sky-plane scale is 3586.2 km/arcsec.
Diameter estimates:
61.4 km assuming a 5% albedo, aximum of 4.8 sec for a central chord
25.1 km assuming a 30% albedo, maximum of 1.9 sec for a central chord
Cross-track diameter of 61.4 km used for deployment plan.
Star training set for 11395_Iphinous, (2025/03/27 15:21UT) Object RA Dec mag sep mel Sirius 06:46:15.6 -16:45:08 -1.5 28.88 113 Alphard 09:28:49.7 -08:46:09 2.0 12.15 152 3 Hya 08:36:42.1 -08:04:14 6.2 0.81 141 PPM 191553 08:40:04.4 -08:38:48 8.5 0.27 142 PPM 191541 08:39:32.6 -08:39:21 8.9 0.27 142 11395_Iphinous 08:39:43.0 -08:23:14 15.6 142 Positions are for equinox of date
Star training set for 11395_Iphinous, (2025/03/27 15:21UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:28 -1.5 28.88 113 Alphard 09:27:35.2 -08:39:30 2.0 12.15 152 3 Hya 08:35:28.2 -07:58:56 6.2 0.81 141 PPM 191553 08:38:50.7 -08:33:23 8.5 0.27 142 PPM 191541 08:38:19.0 -08:33:57 8.9 0.27 142 11395_Iphinous 08:38:29.2 -08:17:51 15.6 142 Positions are for J2000