Event between 02GW31 and star GA0800:04328279 with event index number of 1182524
Geocentric closest approach at 2023/04/13 23:33:25 UTC
J2000 position of star is 13:08:30.4 -08:38:52
Equinox of date position of star is 13:09:38.6 -08:45:49
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 102 degrees from the moon.
Moon is 43% illuminated.
TNO apparent brightness V=23.6
TNO is 44.5 AU from the Sun
and 43.5 AU from the Earth.
The TNO is moving 25.6
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 334 seconds.
The 1-sigma cross-track error in the shadow position is
4995 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 8.9 sec chord
Diameter=92.7 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E
Star training set for 02GW31, (2023/04/13 23:31UT) Object RA Dec mag sep mel Spica 13:26:25.4 -11:16:56 1.0 4.82 98 PPM 196204 13:09:45.5 -09:06:31 5.5 0.34 102 PPM 196226 13:10:48.9 -07:54:16 8.1 0.91 103 PPM 196218 13:10:19.3 -08:37:29 9.1 0.21 102 02GW31 13:09:43.4 -08:46:18 16.4 102 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 02GW31, (2023/04/13 23:31UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 4.82 98 PPM 196204 13:08:32.4 -08:59:05 5.5 0.34 102 PPM 196226 13:09:36.1 -07:46:51 8.1 0.91 103 PPM 196218 13:09:06.3 -08:30:04 9.1 0.21 102 02GW31 13:08:30.4 -08:38:52 16.4 102 Positions are for J2000
Event circumstances last updated at 2021/10/07 00:39:12 UT
Marc W. Buie, Southwest Research Institute