Occultation event with (34642) 00WN2, event index number 4598
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/07 17:52:05 UTC
J2000 position of star is 04:52:28.9 +32:50:26
Equinox of date position of star is 04:54:13.7 +32:53:00
Star is 132 degrees from the moon. Moon is 3% illuminated.
Stellar brightness G=15.9, apparent brightess of occulting body is G=16.1
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 3.2 per integration for unocculted signal
Expected flux drop is 54% with SNR of 1.7 for the occulted depth (per occulted point)
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 17.0 arcsec/hr.
Position angle of asteroid motion is 106.8 degrees
The recommended exposure time corresponds to 7.8 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 33.8 km.
The sky-plane scale is 3301.3 km/arcsec.
Diameter estimates:
41.1 km assuming a 5% albedo, maximum of 2.6 sec for a central chord
16.8 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 33.3 km used for deployment plan.
Star training set for 34642_00WN2, (2026/11/07 17:52UT) Object RA Dec mag sep mel Aldebaran 04:37:27.9 +16:33:40 0.8 16.76 137 3Iot Aur 04:58:44.8 +33:12:22 2.7 1.00 131 PPM 069666 04:51:03.6 +32:37:58 6.0 0.71 133 PPM 069754 04:57:15.2 +32:49:29 8.2 0.64 131 PPM 069691 04:53:01.4 +32:55:53 9.9 0.26 132 34642_00WN2 04:54:13.7 +32:53:00 16.1 132 Positions are for equinox of date
Star training set for 34642_00WN2, (2026/11/07 17:52UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 16.76 137 3Iot Aur 04:56:59.6 +33:09:57 2.7 1.00 131 PPM 069666 04:49:19.1 +32:35:16 6.0 0.71 133 PPM 069754 04:55:30.4 +32:47:02 8.2 0.64 131 PPM 069691 04:51:16.6 +32:53:16 9.9 0.26 132 34642_00WN2 04:52:28.9 +32:50:26 16.1 132 Positions are for J2000