Occultation event with (5119) Imbrius, event index number 4613
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/08 22:11:46 UTC
J2000 position of star is 06:11:14.5 +38:13:57
Equinox of date position of star is 06:13:05.3 +38:13:28
Star is 130 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=15.0, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.90 seconds with the standard RECON-QHY system.
SNR of 9.8 per integration for unocculted signal
Expected flux drop is 65% with SNR of 6.4 for the occulted depth (per occulted point)
Apparent velocity is 9.4 km/sec on the sky relative to the star, or, 10.2 arcsec/hr.
Position angle of asteroid motion is 108.9 degrees
The recommended exposure time corresponds to 8.5 km per image.
The 1-sigma error in the time of the event is 1.8 seconds.
The 1-sigma cross-track error in the shadow position is 27.5 km.
The sky-plane scale is 3343.2 km/arcsec.
Diameter estimates:
51.8 km assuming a 5% albedo, maximum of 5.5 sec for a central chord
21.1 km assuming a 30% albedo, maximum of 2.2 sec for a central chord
Cross-track diameter of 49.3 km used for deployment plan.
Star training set for 5119_Imbrius, (2026/11/08 22:12UT) Object RA Dec mag sep mel Pollux 07:46:57.4 +27:57:33 1.1 22.09 109 34Bet Aur 06:01:30.0 +44:56:50 1.9 7.06 131 40 Aur 06:08:26.2 +38:28:39 5.4 0.95 131 PPM 071285 06:11:25.2 +38:17:21 7.7 0.33 130 PPM 071328 06:13:20.3 +38:20:53 9.9 0.13 130 5119_Imbrius 06:13:05.3 +38:13:28 15.7 130 Positions are for equinox of date
Star training set for 5119_Imbrius, (2026/11/08 22:12UT) Object RA Dec mag sep mel Pollux 07:45:17.7 +28:01:33 1.1 22.09 109 34Bet Aur 05:59:31.6 +44:56:51 1.9 7.06 131 40 Aur 06:06:35.1 +38:28:56 5.4 0.95 131 PPM 071285 06:09:34.3 +38:17:45 7.7 0.33 130 PPM 071328 06:11:29.4 +38:21:22 9.9 0.13 130 5119_Imbrius 06:11:14.5 +38:13:57 15.7 130 Positions are for J2000