Occultation event with (2207) Antenor, event index number 4996
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/12/02 23:24:08 UTC
J2000 position of star is 05:50:41.4 +15:22:10
Equinox of date position of star is 05:52:14.0 +15:22:30
Star is 94 degrees from the moon. Moon is 32% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=13.7
Use an exposure time of 1.55 seconds with the standard RECON-QHY system.
SNR of 7.5 per integration for unocculted signal
Expected flux drop is 18% with SNR of 1.4 for the occulted depth (per occulted point)
Apparent velocity is 15.7 km/sec on the sky relative to the star, or, 18.7 arcsec/hr.
Position angle of asteroid motion is 86.5 degrees
The recommended exposure time corresponds to 24.3 km per image.
The 1-sigma error in the time of the event is 0.3 seconds.
The 1-sigma cross-track error in the shadow position is 43.2 km.
The sky-plane scale is 3017.8 km/arcsec.
Diameter estimates:
98.6 km assuming a 5% albedo, maximum of 6.3 sec for a central chord
40.3 km assuming a 30% albedo, maximum of 2.6 sec for a central chord
Cross-track diameter of 97.7 km used for deployment plan.
Star training set for 2207_Antenor, (2026/12/02 23:24UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.8 +07:24:35 0.4 8.04 92 Bellatrix 05:26:34.6 +06:22:18 1.6 10.98 99 131 Tau 05:48:45.2 +14:29:46 5.7 1.22 94 PPM 121447 05:51:30.4 +14:53:10 8.1 0.52 94 PPM 121462 05:52:06.7 +15:30:53 8.9 0.14 94 2207_Antenor 05:52:14.0 +15:22:30 13.7 93 Positions are for equinox of date
Star training set for 2207_Antenor, (2026/12/02 23:24UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 8.04 92 Bellatrix 05:25:07.8 +06:20:58 1.6 10.98 99 131 Tau 05:47:13.1 +14:29:18 5.7 1.22 94 PPM 121447 05:49:58.0 +14:52:49 8.1 0.52 94 PPM 121462 05:50:33.9 +15:30:33 8.9 0.14 94 2207_Antenor 05:50:41.4 +15:22:10 13.7 94 Positions are for J2000