Occultation event with (16070) Charops, event index number 5052
Regions able to see the event: Europe
Geocentric closest approach at 2026/12/05 17:20:23 UTC
J2000 position of star is 06:25:25.6 +32:55:33
Equinox of date position of star is 06:27:11.5 +32:54:31
Star is 122 degrees from the moon. Moon is 10% illuminated.
Stellar brightness G=14.2, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.35 seconds with the standard RECON-QHY system.
SNR of 9.8 per integration for unocculted signal
Expected flux drop is 72% with SNR of 7.0 for the occulted depth (per occulted point)
Apparent velocity is 16.8 km/sec on the sky relative to the star, or, 17.4 arcsec/hr.
Position angle of asteroid motion is 88.7 degrees
The recommended exposure time corresponds to 5.9 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 25.7 km.
The sky-plane scale is 3488.5 km/arcsec.
Diameter estimates:
66.4 km assuming a 5% albedo, maximum of 3.9 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 63.2 km used for deployment plan.
Star training set for 16070_Charops, (2026/12/05 17:20UT) Object RA Dec mag sep mel Pollux 07:46:57.7 +27:57:32 1.1 17.86 104 34Bet Aur 06:01:30.3 +44:56:50 1.9 13.02 126 PPM 071742 06:34:12.6 +32:26:00 6.0 1.55 120 PPM 071634 06:29:21.1 +32:32:38 7.5 0.58 121 PPM 071612 06:27:57.8 +33:06:28 9.4 0.26 121 PPM 071585 06:26:37.9 +32:49:01 11.3 0.15 122 16070_Charops 06:27:11.5 +32:54:31 15.2 121 Positions are for equinox of date
Star training set for 16070_Charops, (2026/12/05 17:20UT) Object RA Dec mag sep mel Pollux 07:45:17.7 +28:01:33 1.1 17.86 104 34Bet Aur 05:59:31.6 +44:56:51 1.9 13.02 126 PPM 071742 06:32:27.1 +32:27:18 6.0 1.55 120 PPM 071634 06:27:35.5 +32:33:45 7.5 0.58 121 PPM 071612 06:26:11.6 +33:07:31 9.4 0.26 121 PPM 071585 06:24:52.0 +32:50:02 11.3 0.15 122 16070_Charops 06:25:25.6 +32:55:33 15.2 122 Positions are for J2000