Event between (330836) Orius and star GDR2_276.238_-37.204 with event index number of 132057
Geocentric closest approach at 2018/08/10 10:38:19 UTC
J2000 position of star is 18:24:57.2 -37:12:13
Equinox of date position of star is 18:26:12.3 -37:11:32
Stellar brightness G=13.5,
use SENSEUP=32
Star is 148 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.5
TNO is 17.4 AU from the Sun
and 16.7 AU from the Earth.
The TNO is moving 14.7
km/sec on the sky relative to the star, or,
4.4 arcsec/hr.
The 1-sigma error in the time of the event is 819 seconds.
The 1-sigma cross-track error in the shadow position is
5032 km.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 4.3 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 330836, (2018/08/10 10:38UT) Object RA Dec mag sep mel Antares 16:30:33.1 -26:28:18 0.9 26.67 126 Kap Sco 17:43:46.6 -39:02:16 2.4 8.54 140 PPM 297622 18:24:08.7 -36:39:33 5.2 0.68 148 PPM 297691 18:26:47.3 -37:08:15 8.2 0.13 148 330836 18:26:13.2 -37:11:31 13.5 148 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, (2018/08/10 10:38UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 26.67 126 Kap Sco 17:42:29.3 -39:01:49 2.4 8.54 140 PPM 297622 18:22:53.0 -36:40:11 5.2 0.68 148 PPM 297691 18:25:31.4 -37:08:57 8.2 0.13 148 330836 18:24:57.2 -37:12:13 13.5 148 Positions are for J2000
Event circumstances last updated at 2018/05/24 17:56:00 UT
Marc W. Buie, Southwest Research Institute