Event between (469442) 02GG166 and star GA0620:08298936 with event index number of 1103490
Geocentric closest approach at 2021/09/20 12:42:05 UTC
J2000 position of star is 16:22:12.2 -26:19:14
Equinox of date position of star is 16:23:31.9 -26:22:12
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=20.8
TNO is 17.0 AU from the Sun
and 17.3 AU from the Earth.
The TNO is moving 18.4
km/sec on the sky relative to the star, or,
5.3 arcsec/hr.
The 1-sigma error in the time of the event is 42 seconds.
The 1-sigma cross-track error in the shadow position is
640 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=136.1 km assuming a 5% albedo -- 7.4 sec chord
Diameter=55.6 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
Star training set for 469442, (2021/09/20 12:42UT) Object RA Dec mag sep mel Antares 16:30:44.6 -26:28:42 0.9 1.62 102 23Tau Sco 16:37:14.3 -28:15:33 2.8 3.58 100 PPM 265618 16:32:43.1 -26:34:59 6.1 2.07 101 PPM 265499 16:26:00.7 -26:51:22 8.5 0.74 103 PPM 265473 16:24:42.9 -26:25:14 9.7 0.27 103 469442 16:23:32.1 -26:22:13 15.6 103 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 469442, (2021/09/20 12:42UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 1.62 102 23Tau Sco 16:35:52.9 -28:12:58 2.8 3.58 100 PPM 265618 16:31:22.9 -26:32:16 6.1 2.07 101 PPM 265499 16:24:40.4 -26:48:27 8.5 0.74 103 PPM 265473 16:23:22.9 -26:22:17 9.7 0.27 103 469442 16:22:12.2 -26:19:14 15.6 104 Positions are for J2000
Event circumstances last updated at 2021/08/29 01:39:31 UT
Marc W. Buie, Southwest Research Institute