Occultation event with (30102) 00FC1, event index number 3839
Regions able to see the event: NZ
Geocentric closest approach at 2026/07/10 06:43:24 UTC
J2000 position of star is 11:52:14.8 +17:15:12
Equinox of date position of star is 11:53:36.7 +17:06:21
Star is 118 degrees from the moon. Moon is 24% illuminated.
Stellar brightness G=15.8, apparent brightess of occulting body is G=16.8
Use an exposure time of 0.40 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 72% with SNR of 2.2 for the occulted depth (per occulted point)
Apparent velocity is 27.0 km/sec on the sky relative to the star, or, 23.1 arcsec/hr.
Position angle of asteroid motion is 136.2 degrees
The recommended exposure time corresponds to 10.8 km per image.
The 1-sigma error in the time of the event is 1.3 seconds.
The 1-sigma cross-track error in the shadow position is 2.3 km.
The sky-plane scale is 4204.4 km/arcsec.
Diameter estimates:
40.4 km assuming a 5% albedo, maximum of 1.5 sec for a central chord
16.5 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 36.4 km used for deployment plan.
Star training set for 30102_00FC1, (2026/07/10 06:43UT) Object RA Dec mag sep mel Regulus 10:09:46.9 +11:50:12 1.3 25.66 99 Denebola 11:50:24.7 +14:25:25 2.1 2.79 119 PPM 128581 11:50:36.9 +16:05:42 6.3 1.24 118 PPM 128627 11:54:32.7 +16:42:05 8.2 0.46 119 PPM 128610 11:53:06.7 +16:56:08 9.4 0.21 118 30102_00FC1 11:53:36.7 +17:06:21 16.8 119 Positions are for equinox of date
Star training set for 30102_00FC1, (2026/07/10 06:43UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 25.66 99 Denebola 11:49:02.7 +14:34:16 2.1 2.79 119 PPM 128581 11:49:14.9 +16:14:33 6.3 1.24 118 PPM 128627 11:53:10.8 +16:50:56 8.2 0.46 119 PPM 128610 11:51:44.8 +17:05:00 9.4 0.21 118 30102_00FC1 11:52:14.8 +17:15:12 16.8 118 Positions are for J2000