Occultation event with (6997) Laomedon, event index number 4653
Regions able to see the event: Australia
Geocentric closest approach at 2026/11/12 13:29:55 UTC
J2000 position of star is 04:53:28.6 +03:57:31
Equinox of date position of star is 04:54:53.6 +04:00:03
Star is 153 degrees from the moon. Moon is 10% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 5.1 per integration for unocculted signal
Expected flux drop is 65% with SNR of 3.3 for the occulted depth (per occulted point)
Apparent velocity is 17.3 km/sec on the sky relative to the star, or, 17.8 arcsec/hr.
Position angle of asteroid motion is 64.1 degrees
The recommended exposure time corresponds to 8.6 km per image.
The 1-sigma error in the time of the event is 0.8 seconds.
The 1-sigma cross-track error in the shadow position is 32.5 km.
The sky-plane scale is 3490.1 km/arcsec.
Diameter estimates:
45.5 km assuming a 5% albedo, maximum of 2.6 sec for a central chord
18.6 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 37.5 km used for deployment plan.
Star training set for 6997_Laomedon, (2026/11/12 13:30UT) Object RA Dec mag sep mel Rigel 05:15:49.8 -08:10:21 0.1 13.25 143 Bellatrix 05:26:34.4 +06:22:18 1.6 8.24 158 8Pi 5Ori 04:55:39.2 +02:28:57 3.7 1.53 152 PPM 148203 04:57:51.2 +03:59:39 8.2 0.74 154 PPM 148099 04:53:49.5 +04:22:31 9.1 0.46 154 PPM 148144 04:55:29.1 +04:12:53 10.9 0.26 154 6997_Laomedon 04:54:53.6 +04:00:03 16.0 154 Positions are for equinox of date
Star training set for 6997_Laomedon, (2026/11/12 13:30UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 13.25 143 Bellatrix 05:25:07.8 +06:20:58 1.6 8.24 158 8Pi 5Ori 04:54:15.1 +02:26:26 3.7 1.53 152 PPM 148203 04:56:26.2 +03:57:13 8.2 0.74 154 PPM 148099 04:52:24.3 +04:19:56 9.1 0.46 154 PPM 148144 04:54:03.9 +04:10:22 10.9 0.26 154 6997_Laomedon 04:53:28.6 +03:57:31 16.0 153 Positions are for J2000