Event between (471325) 11KT19 and star GA0940:04131039 with event index number of 144835
Geocentric closest approach at 2018/07/08 17:12:39 UTC
J2000 position of star is 15:45:23.3 +04:29:04
Equinox of date position of star is 15:46:18.4 +04:25:40
Stellar brightness G=15.6,
use SENSEUP=128
Star is 160 degrees from the moon.
Moon is 26% illuminated.
TNO apparent brightness V=21.7
TNO is 27.5 AU from the Sun
and 26.9 AU from the Earth.
The TNO is moving 20.1
km/sec on the sky relative to the star, or,
3.7 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is
2578 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 10.9 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CENTAURR
Star training set for 471325, (2018/07/08 17:13UT) Object RA Dec mag sep mel Arcturus 14:16:30.4 +19:05:12 0.0 26.36 147 Unukalhai 15:45:10.9 +06:22:07 2.6 1.96 159 PPM 161874 15:46:18.5 +05:23:26 5.6 0.96 160 PPM 161919 15:48:43.7 +04:14:32 8.1 0.63 160 PPM 161873 15:46:15.6 +04:28:32 9.4 0.05 160 471325 15:46:18.7 +04:25:39 15.6 160 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 471325, (2018/07/08 17:13UT) Object RA Dec mag sep mel Arcturus 14:15:38.3 +19:10:20 0.0 26.36 147 Unukalhai 15:44:16.3 +06:25:33 2.6 1.96 159 PPM 161874 15:45:23.6 +05:26:51 5.6 0.96 160 PPM 161919 15:47:48.3 +04:17:54 8.1 0.63 160 PPM 161873 15:45:20.3 +04:31:57 9.4 0.05 160 471325 15:45:23.3 +04:29:04 15.6 160 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:13:37 UT
Marc W. Buie, Southwest Research Institute