Occultation event with (2207) Antenor, event index number 4132
Regions able to see the event: NZ
Geocentric closest approach at 2026/08/30 17:36:05 UTC
J2000 position of star is 05:47:40.5 +16:58:57
Equinox of date position of star is 05:49:13.3 +16:59:24
Star is 79 degrees from the moon. Moon is 93% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=14.6
Use an exposure time of 1.55 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 14% with SNR of 0.4 for the occulted depth (per occulted point)
Apparent velocity is 22.9 km/sec on the sky relative to the star, or, 21.2 arcsec/hr.
Position angle of asteroid motion is 95.4 degrees
The recommended exposure time corresponds to 35.5 km per image.
The 1-sigma error in the time of the event is 0.1 seconds.
The 1-sigma cross-track error in the shadow position is 42.8 km.
The sky-plane scale is 3888.4 km/arcsec.
Diameter estimates:
98.6 km assuming a 5% albedo, maximum of 4.3 sec for a central chord
40.3 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 97.7 km used for deployment plan.
Star training set for 2207_Antenor, (2026/08/30 17:36UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.0 +07:24:35 0.4 9.75 82 Bellatrix 05:26:33.8 +06:22:18 1.6 11.98 74 126 Tau 05:42:50.2 +16:32:43 4.6 1.59 78 PPM 121412 05:49:45.2 +17:30:13 8.2 0.53 79 PPM 121416 05:49:56.2 +16:58:28 9.9 0.17 79 2207_Antenor 05:49:13.3 +16:59:24 14.6 80 Positions are for equinox of date
Star training set for 2207_Antenor, (2026/08/30 17:36UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 9.75 82 Bellatrix 05:25:07.8 +06:20:58 1.6 11.98 74 126 Tau 05:41:17.7 +16:32:01 4.6 1.59 78 PPM 121412 05:48:11.9 +17:29:47 8.2 0.53 79 PPM 121416 05:48:23.4 +16:58:03 9.9 0.17 79 2207_Antenor 05:47:40.5 +16:58:57 14.6 79 Positions are for J2000