Event between (53311) Deucalion and star UC4-367-066106 with event index number of 65597
Geocentric closest approach at 2017/06/24 12:36:41 UTC
J2000 position of star is 14:55:28.9 -16:41:45
Equinox of date position of star is 14:56:23.3 -16:45:39
Stellar brightness R=14.8
Star is 127 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=23.0
TNO is 42.8 AU from the Sun
and 42.1 AU from the Earth.
The TNO is moving 15.6
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 589 seconds.
The 1-sigma cross-track error in the shadow position is
3779 km.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 18.5 sec chord
Diameter=117.7 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 53311, (2017/06/24 12:37UT) Object RA Dec mag sep mel Spica 13:26:07.0 -11:15:07 1.0 22.58 105 27Bet Lib 15:17:57.0 -09:26:47 2.6 9.00 130 8Alp1Lib 14:51:39.4 -16:04:08 5.1 1.35 126 PPM 229513 14:57:18.5 -16:52:15 7.5 0.23 127 PPM 229497 14:56:46.9 -16:47:53 9.5 0.08 127 53311 14:56:27.5 -16:45:57 14.8 127 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 17:22:19 UT
Marc W. Buie, Southwest Research Institute