Event between (328884) 10LJ109 and star UC4-238-121187 with event index number of 81546
Geocentric closest approach at 2017/07/27 05:12:35 UTC
J2000 position of star is 17:25:15.9 -42:33:21
Equinox of date position of star is 17:26:27.8 -42:34:10
Stellar brightness R=15.9
Star is 90 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=21.2
TNO is 12.0 AU from the Sun
and 11.3 AU from the Earth.
The TNO is moving 14.3
km/sec on the sky relative to the star, or,
6.3 arcsec/hr.
The 1-sigma error in the time of the event is 173 seconds.
The 1-sigma cross-track error in the shadow position is
1237 km.
The TNO has an absolute magnitude Hv=10.2
Diameter=55.0 km assuming a 5% albedo -- 3.8 sec chord
Diameter=22.4 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
Star training set for 328884, (2017/07/27 05:13UT) Object RA Dec mag sep mel Antares 16:30:29.2 -26:28:10 0.9 19.75 76 The Sco 17:38:35.0 -43:00:26 1.9 2.26 92 PPM 322870 17:23:27.2 -41:08:14 6.4 1.54 89 PPM 322887 17:24:31.1 -42:31:34 8.3 0.37 90 PPM 322941 17:27:14.9 -42:34:18 8.7 0.13 90 328884 17:26:31.3 -42:34:13 15.9 90 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 328884, (2017/07/27 05:13UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 19.75 76 The Sco 17:37:19.2 -42:59:52 1.9 2.26 92 PPM 322870 17:22:13.0 -41:07:17 6.4 1.54 89 PPM 322887 17:23:15.8 -42:30:39 8.3 0.37 90 PPM 322941 17:25:59.6 -42:33:27 8.7 0.13 90 328884 17:25:15.9 -42:33:21 15.9 90 Positions are for J2000
Event circumstances last updated at 2016/10/07 18:09:08 UT
Marc W. Buie, Southwest Research Institute