Event between 11JY31 and star UC4-349-168571 with event index number of 203183
Geocentric closest approach at 2018/06/04 04:16:02 UTC
J2000 position of star is 19:10:15.0 -20:17:01
Equinox of date position of star is 19:11:18.5 -20:15:11
Stellar brightness R=15.0,
use SENSEUP=128
Star is 29 degrees from the moon.
Moon is 74% illuminated.
TNO apparent brightness V=25.1
TNO is 42.5 AU from the Sun
and 41.6 AU from the Earth.
The TNO is moving 19.8
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 707 seconds.
The 1-sigma cross-track error in the shadow position is
4989 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=103.8 km assuming a 5% albedo -- 5.2 sec chord
Diameter=42.4 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 11JY31, (2018/06/04 04:16UT) Object RA Dec mag sep mel Antares 16:30:32.4 -26:28:17 0.9 37.27 65 Nunki 18:56:24.4 -26:16:20 2.0 6.93 33 PPM 235581 19:10:53.3 -19:46:23 6.4 0.49 29 PPM 269430 19:12:24.6 -20:18:57 8.3 0.26 28 PPM 269396 19:10:56.5 -20:25:12 8.6 0.19 29 11JY31 19:11:20.3 -20:15:08 15.0 28 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 11JY31, (2018/06/04 04:16UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 37.27 65 Nunki 18:55:15.9 -26:17:49 2.0 6.93 33 PPM 235581 19:09:48.2 -19:48:15 6.4 0.49 29 PPM 269430 19:11:19.3 -20:20:50 8.3 0.26 28 PPM 269396 19:09:51.1 -20:27:04 8.6 0.19 29 11JY31 19:10:15.0 -20:17:01 15.0 28 Positions are for J2000
Event circumstances last updated at 2017/12/04 18:42:20 UT
Marc W. Buie, Southwest Research Institute