Event between (538691) 16FW59 and star GA0780:04265973 with event index number of 2397549
Geocentric closest approach at 2022/12/10 08:58:51 UTC
J2000 position of star is 12:40:05.1 -11:02:22
Equinox of date position of star is 12:41:16.2 -11:09:51
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 92 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=22.8
TNO is 45.1 AU from the Sun
and 45.6 AU from the Earth.
The TNO is moving 17.5
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 233 seconds.
The 1-sigma cross-track error in the shadow position is
3615 km.
The TNO has an absolute magnitude Hv=6.1
Diameter=359.8 km assuming a 5% albedo -- 20.6 sec chord
Diameter=146.9 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 538691, (2022/12/10 09:06UT) Object RA Dec mag sep mel Spica 13:26:24.3 -11:16:49 1.0 11.07 101 4Gam Crv 12:16:59.4 -17:40:09 2.6 8.77 89 PPM 226198 12:42:27.5 -13:08:23 6.0 2.00 93 PPM 226295 12:46:16.0 -11:07:28 8.2 1.22 92 PPM 226183 12:41:44.5 -11:09:36 9.5 0.11 91 538691 12:41:16.8 -11:09:54 16.6 92 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 538691, (2022/12/10 09:06UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 11.07 101 4Gam Crv 12:15:48.1 -17:32:30 2.6 8.77 89 PPM 226198 12:41:15.7 -13:00:51 6.0 2.00 93 PPM 226295 12:45:04.3 -10:59:58 8.2 1.22 92 PPM 226183 12:40:32.9 -11:02:03 9.5 0.11 91 538691 12:40:05.1 -11:02:22 16.6 91 Positions are for J2000
Event circumstances last updated at 2022/10/03 04:13:52 UT
Marc W. Buie, Southwest Research Institute