Event between (330836) Orius and star UC4-270-134054 with event index number of 68495
Geocentric closest approach at 2017/08/13 05:48:54 UTC
J2000 position of star is 17:57:46.5 -36:04:46
Equinox of date position of star is 17:58:56.8 -36:04:48
Stellar brightness R=14.6,
use SENSEUP=128
Star is 116 degrees from the moon.
Moon is 70% illuminated.
TNO apparent brightness V=22.3
TNO is 16.8 AU from the Sun
and 16.2 AU from the Earth.
The TNO is moving 11.4
km/sec on the sky relative to the star, or,
3.5 arcsec/hr.
The 1-sigma error in the time of the event is 812 seconds.
The 1-sigma cross-track error in the shadow position is
4769 km.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 5.5 sec chord
Diameter=25.8 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
Star training set for 330836, (2017/08/13 05:49UT) Object RA Dec mag sep mel Antares 16:30:29.4 -26:28:11 0.9 21.14 136 Kap Sco 17:43:42.5 -39:02:15 2.4 4.23 118 PPM 296992 17:56:19.6 -36:28:39 6.3 0.66 116 PPM 297105 18:01:15.5 -35:55:39 7.7 0.49 115 PPM 297042 17:58:10.2 -36:16:25 8.7 0.25 116 330836 17:58:57.8 -36:04:48 14.6 115 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, (2017/08/13 05:49UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 21.14 136 Kap Sco 17:42:29.3 -39:01:49 2.4 4.23 118 PPM 296992 17:55:08.1 -36:28:32 6.3 0.66 116 PPM 297105 18:00:04.3 -35:55:40 7.7 0.49 115 PPM 297042 17:56:58.8 -36:16:22 8.7 0.25 116 330836 17:57:46.5 -36:04:46 14.6 116 Positions are for J2000
Event circumstances last updated at 2017/05/16 18:31:29 UT
Marc W. Buie, Southwest Research Institute