Event between 05LA54 and star UC4-333-090626 with event index number of 9377
Geocentric closest approach at 2015/12/17 07:23:07 UTC
J2000 position of star is 17:00:14.6 -23:28:22
Equinox of date position of star is 17:01:12.4 -23:29:43
Stellar brightness R=15.5
Star is 82 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=22.9
TNO is 41.4 AU from the Sun
and 42.4 AU from the Earth.
The TNO is moving 34.7
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 383 seconds.
The 1-sigma cross-track error in the shadow position is
14672 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 7.8 sec chord
Diameter=110.9 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 05LA54, (2015/12/17 07:23UT) Object RA Dec mag sep mel Antares 16:30:23.3 -26:27:58 0.9 7.59 88 23Tau Sco 16:36:52.7 -28:14:52 2.8 7.25 87 26 Oph 17:01:08.3 -25:00:44 5.8 1.52 81 PPM 266304 17:03:06.7 -23:18:37 8.4 0.47 81 PPM 266259 17:01:28.5 -23:37:03 9.5 0.14 81 05LA54 17:01:12.6 -23:29:43 15.5 81 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 2015/11/21 23:49:12 UT
Marc W. Buie, Southwest Research Institute