Occultation event with (16070) Charops, event index number 1139
Regions able to see the event: Australia
Geocentric closest approach at 2025/07/14 19:37:10 UTC
J2000 position of star is 03:54:05.0 +33:56:06
Equinox of date position of star is 03:55:43.2 +34:00:31
Star is 83 degrees from the moon. Moon is 83% illuminated.
Stellar brightness G=16.3, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.85 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 36% with SNR of 1.1 for the occulted depth (per occulted point)
Apparent velocity is 31.4 km/sec on the sky relative to the star, or, 26.0 arcsec/hr.
The recommended exposure time corresponds to 26.7 km per image.
The 1-sigma error in the time of the event is 1.4 seconds.
The 1-sigma cross-track error in the shadow position is 12.8 km.
The sky-plane scale is 4345.3 km/arcsec.
Diameter estimates:
66.4 km assuming a 5% albedo, aximum of 2.1 sec for a central chord
27.1 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 66.4 km used for deployment plan.
Star training set for 16070_Charops, (2025/07/14 19:37UT) Object RA Dec mag sep mel Aldebaran 04:37:23.3 +16:33:31 0.8 19.80 89 44Zet Per 03:55:44.6 +31:57:26 2.8 2.05 82 PPM 068848 03:53:32.0 +34:26:03 5.6 0.62 82 PPM 068856 03:53:57.2 +34:17:49 7.5 0.47 82 PPM 068892 03:55:43.3 +33:36:22 10.0 0.40 83 PPM 068897 03:56:00.4 +33:59:49 10.5 0.06 83 16070_Charops 03:55:43.2 +34:00:31 15.7 83 Positions are for equinox of date
Star training set for 16070_Charops, (2025/07/14 19:37UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 19.80 89 44Zet Per 03:54:07.9 +31:53:01 2.8 2.05 82 PPM 068848 03:51:53.7 +34:21:34 5.6 0.62 82 PPM 068856 03:52:18.9 +34:13:20 7.5 0.47 82 PPM 068892 03:54:05.5 +33:31:56 10.0 0.40 83 PPM 068897 03:54:22.3 +33:55:24 10.5 0.06 83 16070_Charops 03:54:05.0 +33:56:06 15.7 83 Positions are for J2000