Occultation event with (16070) Charops, event index number 5144
Regions able to see the event: Senegal,UAE
Geocentric closest approach at 2026/12/09 22:37:45 UTC
J2000 position of star is 06:23:01.9 +32:54:32
Equinox of date position of star is 06:24:47.9 +32:53:36
Star is 171 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=11.2, apparent brightess of occulting body is G=15.1
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 33.7 per integration for unocculted signal
Expected flux drop is 97% with SNR of 32.8 for the occulted depth (per occulted point)
Apparent velocity is 17.7 km/sec on the sky relative to the star, or, 18.3 arcsec/hr.
Position angle of asteroid motion is 87.4 degrees
The recommended exposure time corresponds to 2.1 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 25.6 km.
The sky-plane scale is 3473.3 km/arcsec.
Diameter estimates:
66.4 km assuming a 5% albedo, maximum of 3.8 sec for a central chord
27.1 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 63.2 km used for deployment plan.
Star training set for 16070_Charops, (2026/12/09 22:38UT) Object RA Dec mag sep mel Pollux 07:46:57.7 +27:57:32 1.1 18.35 155 34Bet Aur 06:01:30.4 +44:56:50 1.9 12.87 162 PPM 071742 06:34:12.6 +32:26:00 6.0 2.03 170 PPM 071595 06:26:58.1 +32:15:17 8.1 0.79 171 PPM 071545 06:24:20.9 +32:44:41 8.9 0.18 171 PPM 071555 06:24:57.0 +32:57:25 10.6 0.07 171 16070_Charops 06:24:47.9 +32:53:36 15.1 171 Positions are for equinox of date
Star training set for 16070_Charops, (2026/12/09 22:38UT) Object RA Dec mag sep mel Pollux 07:45:17.7 +28:01:33 1.1 18.35 155 34Bet Aur 05:59:31.6 +44:56:51 1.9 12.87 162 PPM 071742 06:32:27.1 +32:27:18 6.0 2.03 170 PPM 071595 06:25:12.7 +32:16:18 8.1 0.79 171 PPM 071545 06:22:35.0 +32:45:36 8.9 0.18 171 PPM 071555 06:23:11.0 +32:58:22 10.6 0.07 171 16070_Charops 06:23:01.9 +32:54:32 15.1 171 Positions are for J2000