Event between (330836) Orius and star GA0500:32426133 with event index number of 1112040
Geocentric closest approach at 2021/08/04 16:51:49 UTC
J2000 position of star is 19:38:27.1 -38:15:10
Equinox of date position of star is 19:39:52.4 -38:12:12
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon.
Moon is 15% illuminated.
TNO apparent brightness V=22.8
TNO is 19.3 AU from the Sun
and 18.4 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
5.6 arcsec/hr.
The 1-sigma error in the time of the event is 1066 seconds.
The 1-sigma cross-track error in the shadow position is
790 km.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 3.0 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 330836, (2021/08/04 16:52UT) Object RA Dec mag sep mel Antares 16:30:44.1 -26:28:41 0.9 41.16 162 38Zet Sgr 19:03:59.0 -29:50:51 2.7 11.18 163 PPM 299319 19:45:03.9 -37:29:10 6.2 1.25 153 PPM 299220 19:39:34.6 -38:42:29 8.1 0.51 153 PPM 299237 19:40:35.7 -38:16:10 9.7 0.15 153 330836 19:39:54.1 -38:12:08 16.1 153 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, (2021/08/04 16:52UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 41.16 162 38Zet Sgr 19:02:36.7 -29:52:49 2.7 11.18 163 PPM 299319 19:43:37.6 -37:32:20 6.2 1.25 153 PPM 299220 19:38:07.2 -38:45:30 8.1 0.51 153 PPM 299237 19:39:08.7 -38:19:13 9.7 0.15 153 330836 19:38:27.1 -38:15:10 16.1 154 Positions are for J2000
Event circumstances last updated at 2021/03/02 02:03:16 UT
Marc W. Buie, Southwest Research Institute