Occultation event with (2207) Antenor, event index number 4883
Regions able to see the event: Senegal
Geocentric closest approach at 2026/11/25 22:23:00 UTC
J2000 position of star is 05:54:08.9 +15:25:59
Equinox of date position of star is 05:55:41.6 +15:26:11
Star is 14 degrees from the moon. Moon is 97% illuminated.
Stellar brightness G=12.6, apparent brightess of occulting body is G=13.8
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 13.9 per integration for unocculted signal
Expected flux drop is 76% with SNR of 10.5 for the occulted depth (per occulted point)
Apparent velocity is 14.2 km/sec on the sky relative to the star, or, 16.8 arcsec/hr.
Position angle of asteroid motion is 84.6 degrees
The recommended exposure time corresponds to 1.7 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 43.1 km.
The sky-plane scale is 3046.5 km/arcsec.
Diameter estimates:
98.6 km assuming a 5% albedo, maximum of 6.9 sec for a central chord
40.3 km assuming a 30% albedo, maximum of 2.8 sec for a central chord
Cross-track diameter of 97.7 km used for deployment plan.
Star training set for 2207_Antenor, (2026/11/25 22:23UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.7 +07:24:35 0.4 8.03 21 Alhena 06:39:15.9 +16:22:26 1.9 10.52 20 137 Tau 05:53:54.0 +14:10:35 5.5 1.33 15 PPM 121573 05:56:10.0 +15:30:38 8.1 0.14 14 PPM 121553 05:55:22.9 +15:26:31 10.0 0.08 14 2207_Antenor 05:55:41.6 +15:26:11 13.8 14 Positions are for equinox of date
Star training set for 2207_Antenor, (2026/11/25 22:23UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 8.03 21 Alhena 06:37:42.8 +16:23:56 1.9 10.52 20 137 Tau 05:52:22.2 +14:10:18 5.5 1.33 15 PPM 121573 05:54:37.3 +15:30:27 8.1 0.14 14 PPM 121553 05:53:50.2 +15:26:18 10.0 0.08 14 2207_Antenor 05:54:08.9 +15:25:59 13.8 14 Positions are for J2000