Event between (82155) 01FZ173 and star UC4-339-067729 with event index number of 110435
Geocentric closest approach at 2018/03/17 15:10:14 UTC
J2000 position of star is 14:20:13.8 -22:15:28
Equinox of date position of star is 14:21:12.5 -22:20:12
Stellar brightness R=15.4,
use SENSEUP=128
Star is 136 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=21.4
TNO is 33.0 AU from the Sun
and 32.3 AU from the Earth.
The TNO is moving 15.5
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 603 seconds.
The 1-sigma cross-track error in the shadow position is
5591 km.
The TNO has an absolute magnitude Hv=6.1
Diameter=346.7 km assuming a 5% albedo -- 23.4 sec chord
Diameter=141.6 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is SCATNEAR
Star training set for 82155, (2018/03/17 15:10UT) Object RA Dec mag sep mel Spica 13:26:09.3 -11:15:21 1.0 17.21 154 5The Cen 14:07:45.6 -36:27:31 2.1 14.42 130 PPM 262884 14:25:51.2 -24:53:17 5.3 2.76 134 PPM 262742 14:18:43.2 -21:54:45 7.6 0.73 137 PPM 262801 14:22:03.7 -21:59:31 9.5 0.40 136 82155 14:21:15.6 -22:20:26 15.4 136 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 82155, (2018/03/17 15:10UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 17.21 154 5The Cen 14:06:40.2 -36:22:21 2.1 14.42 130 PPM 262884 14:24:48.6 -24:48:23 5.3 2.76 134 PPM 262742 14:17:41.7 -21:49:44 7.6 0.73 137 PPM 262801 14:21:02.1 -21:54:34 9.5 0.40 136 82155 14:20:13.8 -22:15:28 15.4 136 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:20:50 UT
Marc W. Buie, Southwest Research Institute