Event between (330836) Orius and star GA0520:31060281 with event index number of 155583
Geocentric closest approach at 2018/10/26 17:28:22 UTC
J2000 position of star is 18:26:45.3 -36:28:40
Equinox of date position of star is 18:28:01.5 -36:27:55
Stellar brightness G=16.9,
use SENSEUP=128
Star is 139 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=22.7
TNO is 17.6 AU from the Sun
and 18.0 AU from the Earth.
The TNO is moving 21.8
km/sec on the sky relative to the star, or,
6.0 arcsec/hr.
The 1-sigma error in the time of the event is 528 seconds.
The 1-sigma cross-track error in the shadow position is
4445 km.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 2.9 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 330836, (2018/10/26 17:28UT) Object RA Dec mag sep mel Antares 16:30:33.9 -26:28:20 0.9 26.83 166 Kap Sco 17:43:47.5 -39:02:16 2.4 9.11 146 PPM 297683 18:26:37.6 -35:58:48 5.9 0.56 140 PPM 297748 18:29:03.2 -36:28:21 8.4 0.21 139 PPM 297712 18:27:40.4 -36:18:14 9.4 0.18 140 330836 18:28:01.6 -36:27:55 16.9 139 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 330836, (2018/10/26 17:28UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 26.83 166 Kap Sco 17:42:29.3 -39:01:49 2.4 9.11 146 PPM 297683 18:25:21.6 -35:59:31 5.9 0.56 140 PPM 297748 18:27:46.9 -36:29:08 8.4 0.21 139 PPM 297712 18:26:24.1 -36:18:58 9.4 0.18 140 330836 18:26:45.3 -36:28:40 16.9 139 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:41:35 UT
Marc W. Buie, Southwest Research Institute