Event between 98WV31 and star GA1140:00846667 with event index number of 181923
Geocentric closest approach at 2018/11/13 23:37:08 UTC
J2000 position of star is 04:51:54.2 +24:05:13
Equinox of date position of star is 04:53:01.4 +24:07:01
Stellar brightness G=10.4,
use SENSEUP=4
Star is 131 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=24.0
TNO is 38.5 AU from the Sun
and 37.5 AU from the Earth.
The TNO is moving 23.2
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 318 seconds.
The 1-sigma cross-track error in the shadow position is
4422 km.
The TNO has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 6.2 sec chord
Diameter=59.0 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
Star training set for 98WV31, (2018/11/13 23:37UT) Object RA Dec mag sep mel Aldebaran 04:37:00.3 +16:32:45 0.8 8.45 126 Alnath 05:27:29.2 +28:37:18 1.6 8.93 138 PPM 093742 04:46:51.0 +23:39:41 6.1 1.49 129 PPM 093877 04:55:46.4 +23:58:02 8.5 0.64 131 PPM 093822 04:52:23.8 +24:19:17 9.4 0.25 130 PPM 093834 04:53:16.8 +24:04:49 11.3 0.06 131 98WV31 04:53:03.0 +24:07:03 10.4 131 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 98WV31, (2018/11/13 23:37UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 8.45 126 Alnath 05:26:17.5 +28:36:23 1.6 8.93 138 PPM 093742 04:45:42.5 +23:37:41 6.1 1.49 129 PPM 093877 04:54:37.6 +23:56:16 8.5 0.64 131 PPM 093822 04:51:14.9 +24:17:27 9.4 0.25 130 PPM 093834 04:52:08.0 +24:02:59 11.3 0.06 131 98WV31 04:51:54.2 +24:05:13 10.4 131 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:33:40 UT
Marc W. Buie, Southwest Research Institute