Event between (328884) 10LJ109 and star UC4-242-117697 with event index number of 81599
Geocentric closest approach at 2017/09/16 03:19:06 UTC
J2000 position of star is 17:23:04.5 -41:41:24
Equinox of date position of star is 17:24:15.8 -41:42:17
Stellar brightness R=15.4
Star is 137 degrees from the moon.
Moon is 19% illuminated.
TNO apparent brightness V=21.4
TNO is 12.1 AU from the Sun
and 12.1 AU from the Earth.
The TNO is moving 11.2
km/sec on the sky relative to the star, or,
4.6 arcsec/hr.
The 1-sigma error in the time of the event is 219 seconds.
The 1-sigma cross-track error in the shadow position is
1652 km.
The TNO has an absolute magnitude Hv=10.2
Diameter=55.0 km assuming a 5% albedo -- 4.9 sec chord
Diameter=22.4 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
Star training set for 328884, (2017/09/16 03:19UT) Object RA Dec mag sep mel Antares 16:30:29.8 -26:28:11 0.9 18.83 128 The Sco 17:38:35.6 -43:00:26 1.9 2.94 139 PPM 322870 17:23:27.8 -41:08:14 6.4 0.59 137 PPM 322849 17:22:26.0 -41:34:23 8.5 0.38 137 328884 17:24:19.8 -41:42:20 15.4 137 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, (2017/09/16 03:19UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 18.83 128 The Sco 17:37:19.2 -42:59:52 1.9 2.94 139 PPM 322870 17:22:13.0 -41:07:17 6.4 0.59 137 PPM 322849 17:21:10.8 -41:33:24 8.5 0.38 137 328884 17:23:04.5 -41:41:24 15.4 137 Positions are for J2000
Event circumstances last updated at 2016/10/08 16:37:45 UT
Marc W. Buie, Southwest Research Institute