Event between (469438) 02GV31 and star UC4-462-048516 with event index number of 148381
Geocentric closest approach at 2017/12/22 00:04:57 UTC
J2000 position of star is 11:57:58.0 +02:19:17
Equinox of date position of star is 11:58:53.1 +02:13:18
Stellar brightness R=14.3,
use SENSEUP=64
Star is 132 degrees from the moon.
Moon is 12% illuminated.
TNO apparent brightness V=22.6
TNO is 40.1 AU from the Sun
and 40.1 AU from the Earth.
The TNO is moving 4.1
km/sec on the sky relative to the star, or,
0.5 arcsec/hr.
The 1-sigma error in the time of the event is 1157 seconds.
The 1-sigma cross-track error in the shadow position is
3683 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 76.6 sec chord
Diameter=129.1 km assuming a 30% albedo -- 31.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 469438, (2017/12/22 00:05UT) Object RA Dec mag sep mel Spica 13:26:08.5 -11:15:17 1.0 25.54 107 Denebola 11:49:58.5 +14:28:17 2.1 12.45 137 7 Vir 12:00:52.2 +03:33:18 5.4 1.42 132 PPM 158396 12:00:19.2 +01:43:35 7.9 0.61 131 PPM 158356 11:57:53.4 +02:18:42 9.3 0.26 132 469438 11:58:53.2 +02:13:17 14.3 132 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 469438, (2017/12/22 00:05UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 25.54 107 Denebola 11:49:03.0 +14:34:17 2.1 12.45 137 7 Vir 11:59:56.9 +03:39:18 5.4 1.42 132 PPM 158396 11:59:23.9 +01:49:35 7.9 0.61 131 PPM 158356 11:56:58.2 +02:24:43 9.3 0.26 132 469438 11:57:58.0 +02:19:17 14.3 132 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:07:17 UT
Marc W. Buie, Southwest Research Institute