Event between (26375) 99DE9 and star UC4-408-056371 with event index number of 105536
Geocentric closest approach at 2018/02/24 21:52:54 UTC
J2000 position of star is 12:22:22.9 -08:24:13
Equinox of date position of star is 12:23:18.4 -08:30:11
Stellar brightness R=15.9,
use SENSEUP=128
Star is 101 degrees from the moon.
Moon is 68% illuminated.
TNO apparent brightness V=20.9
TNO is 39.0 AU from the Sun
and 38.2 AU from the Earth.
The TNO is moving 20.1
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 120 seconds.
The 1-sigma cross-track error in the shadow position is
1851 km.
The TNO has an absolute magnitude Hv=4.9
Diameter=631.0 km assuming a 5% albedo -- 31.3 sec chord
Diameter=257.6 km assuming a 30% albedo -- 12.8 sec chord
Dynamical classification is 5:2EEE
Star training set for 26375, (2018/02/24 21:53UT) Object RA Dec mag sep mel Spica 13:26:09.1 -11:15:20 1.0 15.72 117 4Gam Crv 12:16:44.5 -17:38:33 2.6 9.28 102 PPM 225575 12:16:06.7 -10:25:06 6.1 2.61 100 PPM 195404 12:22:30.3 -09:30:02 8.4 1.02 101 PPM 195415 12:23:00.4 -08:39:29 8.9 0.17 101 26375 12:23:19.1 -08:30:15 15.9 101 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.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 26375, (2018/02/24 21:53UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 15.72 117 4Gam Crv 12:15:48.2 -17:32:31 2.6 9.28 102 PPM 225575 12:15:10.6 -10:19:03 6.1 2.61 100 PPM 195404 12:21:34.1 -09:24:00 8.4 1.02 101 PPM 195415 12:22:04.2 -08:33:27 8.9 0.17 101 26375 12:22:22.9 -08:24:13 15.9 101 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:17:48 UT
Marc W. Buie, Southwest Research Institute