Occultation event with (16070) Charops, event index number 1261
Regions able to see the event: Europe,Senegal
Geocentric closest approach at 2025/09/02 03:54:20 UTC
J2000 position of star is 04:22:59.4 +36:23:46
Equinox of date position of star is 04:24:41.4 +36:27:16
Star is 157 degrees from the moon. Moon is 68% illuminated.
Stellar brightness G=16.3, apparent brightess of occulting body is G=15.6
Use an exposure time of 1.25 seconds with the standard RECON-QHY system.
SNR of 4.0 per integration for unocculted signal
Expected flux drop is 34% with SNR of 1.4 for the occulted depth (per occulted point)
Apparent velocity is 12.6 km/sec on the sky relative to the star, or, 11.7 arcsec/hr.
Position angle of asteroid motion is 55.7 degrees
The recommended exposure time corresponds to 15.8 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 20.6 km.
The sky-plane scale is 3879.3 km/arcsec.
Diameter estimates:
66.4 km assuming a 5% albedo, aximum of 5.3 sec for a central chord
27.1 km assuming a 30% albedo, maximum of 2.2 sec for a central chord
Cross-track diameter of 63.2 km used for deployment plan.
Star training set for 16070_Charops, (2025/09/02 03:54UT) Object RA Dec mag sep mel Aldebaran 04:37:23.8 +16:33:32 0.8 20.09 156 44Zet Per 03:55:45.1 +31:57:28 2.8 7.48 152 55 Per 04:26:09.4 +34:11:17 5.5 2.29 158 PPM 069372 04:24:52.9 +36:05:37 8.2 0.36 157 PPM 069377 04:25:28.3 +36:36:03 9.7 0.21 157 16070_Charops 04:24:41.4 +36:27:16 15.6 158 Positions are for equinox of date
Star training set for 16070_Charops, (2025/09/02 03:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 20.09 156 44Zet Per 03:54:07.9 +31:53:01 2.8 7.48 152 55 Per 04:24:29.2 +34:07:51 5.5 2.29 158 PPM 069372 04:23:11.2 +36:02:08 8.2 0.36 157 PPM 069377 04:23:46.1 +36:32:35 9.7 0.21 157 16070_Charops 04:22:59.4 +36:23:46 15.6 157 Positions are for J2000