Occultation event with (5119) Imbrius, event index number 5110
Regions able to see the event: Europe
Geocentric closest approach at 2026/12/08 05:58:59 UTC
J2000 position of star is 05:56:06.6 +38:31:07
Equinox of date position of star is 05:57:58.1 +38:31:14
Star is 156 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.3
Use an exposure time of 1.30 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 24% with SNR of 0.7 for the occulted depth (per occulted point)
Apparent velocity is 17.1 km/sec on the sky relative to the star, or, 19.3 arcsec/hr.
Position angle of asteroid motion is 87.4 degrees
The recommended exposure time corresponds to 22.3 km per image.
The 1-sigma error in the time of the event is 0.3 seconds.
The 1-sigma cross-track error in the shadow position is 32.0 km.
The sky-plane scale is 3199.4 km/arcsec.
Diameter estimates:
51.8 km assuming a 5% albedo, maximum of 3.0 sec for a central chord
21.1 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 49.3 km used for deployment plan.
Star training set for 5119_Imbrius, (2026/12/08 05:59UT) Object RA Dec mag sep mel Pollux 07:46:57.7 +27:57:32 1.1 24.99 134 34Bet Aur 06:01:30.3 +44:56:50 1.9 6.46 153 32Nu Aur 05:53:21.5 +39:09:13 4.0 1.10 157 PPM 071021 05:58:21.7 +38:27:19 8.4 0.10 156 5119_Imbrius 05:57:58.1 +38:31:14 15.3 156 Positions are for equinox of date
Star training set for 5119_Imbrius, (2026/12/08 05:59UT) Object RA Dec mag sep mel Pollux 07:45:17.7 +28:01:33 1.1 24.99 134 34Bet Aur 05:59:31.6 +44:56:51 1.9 6.46 153 32Nu Aur 05:51:29.4 +39:08:55 4.0 1.10 157 PPM 071021 05:56:30.3 +38:27:13 8.4 0.10 156 5119_Imbrius 05:56:06.6 +38:31:07 15.3 156 Positions are for J2000