Event between (469438) 02GV31 and star UC4-465-047470 with event index number of 148383
Geocentric closest approach at 2018/04/10 02:45:46 UTC
J2000 position of star is 11:52:26.6 +02:57:30
Equinox of date position of star is 11:53:21.8 +02:51:31
Stellar brightness R=14.6,
use SENSEUP=128
Star is 133 degrees from the moon.
Moon is 33% illuminated.
TNO apparent brightness V=22.5
TNO is 40.1 AU from the Sun
and 39.2 AU from the Earth.
The TNO is moving 22.7
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 226 seconds.
The 1-sigma cross-track error in the shadow position is
2942 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 13.9 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 469438, (2018/04/10 02:46UT) Object RA Dec mag sep mel Spica 13:26:09.5 -11:15:22 1.0 27.05 106 Denebola 11:49:59.5 +14:28:11 2.1 11.64 137 5Bet Vir 11:51:38.8 +01:39:42 3.6 1.27 133 PPM 158328 11:56:03.3 +03:07:01 8.0 0.72 132 PPM 158288 11:53:21.8 +02:59:34 8.7 0.14 133 469438 11:53:22.9 +02:51:24 14.6 132 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, (2018/04/10 02:46UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 27.05 106 Denebola 11:49:03.0 +14:34:17 2.1 11.64 137 5Bet Vir 11:50:42.6 +01:45:48 3.6 1.27 133 PPM 158328 11:55:07.1 +03:13:07 8.0 0.72 132 PPM 158288 11:52:25.5 +03:05:40 8.7 0.14 133 469438 11:52:26.6 +02:57:30 14.6 133 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:25:35 UT
Marc W. Buie, Southwest Research Institute