Occultation event with (7119) Hiera, event index number 3268
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/02/19 04:35:23 UTC
J2000 position of star is 10:55:22.3 -15:41:49
Equinox of date position of star is 10:56:40.0 -15:50:12
Star is 160 degrees from the moon. Moon is 3% illuminated.
Stellar brightness G=13.3, apparent brightess of occulting body is G=14.9
Use an exposure time of 0.14 seconds with the standard RECON-QHY system.
SNR of 9.7 per integration for unocculted signal
Expected flux drop is 82% with SNR of 7.9 for the occulted depth (per occulted point)
Apparent velocity is 16.6 km/sec on the sky relative to the star, or, 18.5 arcsec/hr.
Position angle of asteroid motion is 94.5 degrees
The recommended exposure time corresponds to 2.3 km per image.
The 1-sigma error in the time of the event is 1.3 seconds.
The 1-sigma cross-track error in the shadow position is 30.6 km.
The sky-plane scale is 3231.0 km/arcsec.
Diameter estimates:
66.4 km assuming a 5% albedo, maximum of 4.0 sec for a central chord
27.1 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 59.2 km used for deployment plan.
Star training set for 7119_Hiera, (2026/02/19 04:35UT) Object RA Dec mag sep mel Regulus 10:09:45.7 +11:50:18 1.3 30.01 158 4Gam Crv 12:17:09.2 -17:41:13 2.6 19.35 157 PPM 223610 10:54:50.6 -15:35:09 6.3 0.51 160 PPM 223686 10:57:48.9 -15:42:36 8.3 0.30 161 PPM 223669 10:57:05.1 -15:48:03 9.5 0.11 160 7119_Hiera 10:56:40.0 -15:50:12 14.9 160 Positions are for equinox of date
Star training set for 7119_Hiera, (2026/02/19 04:35UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 30.01 158 4Gam Crv 12:15:48.1 -17:32:30 2.6 19.35 157 PPM 223610 10:53:33.0 -15:26:46 6.3 0.51 160 PPM 223686 10:56:31.2 -15:34:12 8.3 0.30 161 PPM 223669 10:55:47.5 -15:39:40 9.5 0.11 160 7119_Hiera 10:55:22.3 -15:41:49 14.9 160 Positions are for J2000