Event between (500833) 13GD137 and star UC4-385-065684 with event index number of 220515
Geocentric closest approach at 2018/05/10 18:10:26 UTC
J2000 position of star is 14:37:24.5 -13:10:39
Equinox of date position of star is 14:38:23.2 -13:15:16
Stellar brightness R=14.7,
use SENSEUP=128
Star is 129 degrees from the moon.
Moon is 25% illuminated.
TNO apparent brightness V=23.8
TNO is 35.6 AU from the Sun
and 34.6 AU from the Earth.
The TNO is moving 24.0
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is
1493 km.
The TNO has an absolute magnitude Hv=8.3
Diameter=131.8 km assuming a 5% albedo -- 5.5 sec chord
Diameter=53.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 3:2E
Star training set for 500833, (2018/05/10 18:10UT) Object RA Dec mag sep mel Spica 13:26:09.8 -11:15:24 1.0 17.76 146 27Bet Lib 15:17:59.8 -09:26:58 2.6 10.42 121 PPM 229046 14:37:58.6 -12:22:57 6.2 0.88 129 PPM 229061 14:39:06.7 -12:59:23 7.8 0.32 129 PPM 229047 14:38:07.4 -13:14:13 9.2 0.07 129 500833 14:38:24.6 -13:15:23 14.7 129 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 500833, (2018/05/10 18:10UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 17.76 146 27Bet Lib 15:17:00.3 -09:22:59 2.6 10.42 121 PPM 229046 14:36:58.7 -12:18:13 6.2 0.88 129 PPM 229061 14:38:06.7 -12:54:39 7.8 0.32 129 PPM 229047 14:37:07.3 -13:09:29 9.2 0.07 129 500833 14:37:24.5 -13:10:39 14.7 129 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:31:04 UT
Marc W. Buie, Southwest Research Institute