Occultation event with (2363) Cebriones, event index number 1374
Regions able to see the event: US
Geocentric closest approach at 2025/10/16 13:30:33 UTC
J2000 position of star is 04:04:57.0 +04:58:07
Equinox of date position of star is 04:06:19.0 +05:02:14
Star is 88 degrees from the moon. Moon is 22% illuminated.
Stellar brightness G=16.4, apparent brightess of occulting body is G=14.3
Use an exposure time of 1.40 seconds with the standard RECON-QHY system.
SNR of 3.2 per integration for unocculted signal
Expected flux drop is 13% with SNR of 0.4 for the occulted depth (per occulted point)
Apparent velocity is 16.8 km/sec on the sky relative to the star, or, 18.2 arcsec/hr.
Position angle of asteroid motion is 39.6 degrees
The recommended exposure time corresponds to 23.6 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 27.6 km.
The sky-plane scale is 3332.8 km/arcsec.
Diameter estimates:
93.8 km assuming a 5% albedo, aximum of 5.6 sec for a central chord
38.3 km assuming a 30% albedo, maximum of 2.3 sec for a central chord
Cross-track diameter of 96.0 km used for deployment plan.
Star training set for 2363_Cebriones, (2025/10/16 13:31UT) Object RA Dec mag sep mel Aldebaran 04:37:24.2 +16:33:32 0.8 13.81 78 Menkar 03:03:37.9 +04:11:22 2.5 15.64 103 40 Tau 04:05:06.8 +05:30:18 5.2 0.56 88 PPM 147174 04:05:23.4 +03:54:35 8.1 1.15 88 PPM 147186 04:06:14.6 +04:51:34 8.7 0.18 88 2363_Cebriones 04:06:19.0 +05:02:14 14.3 88 Positions are for equinox of date
Star training set for 2363_Cebriones, (2025/10/16 13:31UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 13.81 78 Menkar 03:02:16.8 +04:05:21 2.5 15.64 103 40 Tau 04:03:44.6 +05:26:08 5.2 0.56 88 PPM 147174 04:04:02.0 +03:50:26 8.1 1.15 88 PPM 147186 04:04:52.8 +04:47:26 8.7 0.18 88 2363_Cebriones 04:04:57.0 +04:58:07 14.3 88 Positions are for J2000