Event between (53311) Deucalion and star UC4-367-066162 with event index number of 65595
Geocentric closest approach at 2017/06/07 23:31:47 UTC
J2000 position of star is 14:56:26.2 -16:45:49
Equinox of date position of star is 14:57:20.7 -16:49:42
Stellar brightness R=14.8
Star is 15 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=23.0
TNO is 42.8 AU from the Sun
and 41.9 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 447 seconds.
The 1-sigma cross-track error in the shadow position is
3434 km.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 13.9 sec chord
Diameter=117.7 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 53311, (2017/06/07 23:32UT) Object RA Dec mag sep mel Spica 13:26:06.8 -11:15:06 1.0 22.82 37 27Bet Lib 15:17:56.9 -09:26:46 2.6 8.92 11 8Alp1Lib 14:51:39.2 -16:04:08 5.1 1.58 16 PPM 229513 14:57:18.4 -16:52:14 7.5 0.05 15 53311 14:57:24.8 -16:50:00 14.8 14 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 17:21:57 UT
Marc W. Buie, Southwest Research Institute