Event between (500831) 13GV136 and star GA0740:05334212 with event index number of 356600
Geocentric closest approach at 2020/03/19 18:39:08 UTC
J2000 position of star is 15:01:29.4 -15:43:27
Equinox of date position of star is 15:02:35.6 -15:48:05
Stellar brightness G=12.6,
use SENSEUP=16
Star is 82 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=24.4
TNO is 40.8 AU from the Sun
and 40.2 AU from the Earth.
The TNO is moving 15.0
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 709 seconds.
The 1-sigma cross-track error in the shadow position is
3954 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 9.2 sec chord
Diameter=56.4 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 500831, (2020/03/19 18:39UT) Object RA Dec mag sep mel Antares 16:30:39.0 -26:28:31 0.9 23.08 59 27Bet Lib 15:18:05.9 -09:27:23 2.6 7.38 80 21Nu Lib 15:07:45.5 -16:20:02 5.2 1.34 80 PPM 229647 15:02:41.8 -16:00:47 8.5 0.21 81 500831 15:02:37.1 -15:48:11 12.6 81 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 500831, (2020/03/19 18:39UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 23.08 59 27Bet Lib 15:17:00.3 -09:22:59 2.6 7.38 80 21Nu Lib 15:06:37.6 -16:15:25 5.2 1.34 80 PPM 229647 15:01:34.1 -15:56:04 8.5 0.21 81 500831 15:01:29.4 -15:43:27 12.6 82 Positions are for J2000
Event circumstances last updated at 2019/10/15 22:13:28 UT
Marc W. Buie, Southwest Research Institute