Event between (456826) 07TH422 and star UC4-521-012213 with event index number of 104251
Geocentric closest approach at 2017/11/24 19:16:22 UTC
J2000 position of star is 05:22:08.1 +14:11:29
Equinox of date position of star is 05:23:03.4 +14:12:22
Stellar brightness R=15.3
Star is 129 degrees from the moon.
Moon is 32% illuminated.
TNO apparent brightness V=22.3
TNO is 29.2 AU from the Sun
and 28.3 AU from the Earth.
The TNO is moving 23.4
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 115 seconds.
The 1-sigma cross-track error in the shadow position is
1835 km.
The TNO has an absolute magnitude Hv=7.6
Diameter=182.0 km assuming a 5% albedo -- 7.8 sec chord
Diameter=74.3 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
Star training set for 456826, (2017/11/24 19:16UT) Object RA Dec mag sep mel Betelgeuse 05:56:08.5 +07:24:32 0.4 10.57 135 Bellatrix 05:26:05.5 +06:21:52 1.6 7.88 128 PPM 120962 05:28:15.4 +15:16:18 6.1 1.63 130 PPM 120891 05:23:58.0 +14:22:37 8.3 0.26 129 456826 05:23:09.1 +14:12:27 15.3 129 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 2016/03/21 17:22:34 UT
Marc W. Buie, Southwest Research Institute