Event between (455206) 01FE193 and star UC4-413-058532 with event index number of 105300
Geocentric closest approach at 2017/04/19 16:01:11 UTC
J2000 position of star is 13:34:50.7 -07:31:26
Equinox of date position of star is 13:35:41.8 -07:36:23
Stellar brightness R=14.5
Star is 98 degrees from the moon.
Moon is 48% illuminated.
TNO apparent brightness V=23.6
TNO is 44.2 AU from the Sun
and 43.2 AU from the Earth.
The TNO is moving 25.0
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 194 seconds.
The 1-sigma cross-track error in the shadow position is
3664 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 8.8 sec chord
Diameter=89.3 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 455206, (2017/04/19 16:01UT) Object RA Dec mag sep mel Spica 13:26:06.4 -11:15:04 1.0 4.35 99 74 Vir 13:32:52.0 -06:20:41 4.1 1.46 99 PPM 196627 13:34:18.9 -07:42:39 7.6 0.37 98 PPM 196644 13:35:33.4 -07:41:39 9.7 0.10 98 455206 13:35:45.2 -07:36:43 14.5 98 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.
Event circumstances last updated at 2016/03/20 17:20:40 UT
Marc W. Buie, Southwest Research Institute