Event between (15810) 94JR1 and star UC4-349-166100 with event index number of 90989
Geocentric closest approach at 2017/11/06 22:33:51 UTC
J2000 position of star is 19:04:59.5 -20:15:55
Equinox of date position of star is 19:05:57.9 -20:14:22
Stellar brightness R=15.4
Star is 157 degrees from the moon.
Moon is 89% illuminated.
TNO apparent brightness V=23.3
TNO is 35.6 AU from the Sun
and 36.1 AU from the Earth.
The TNO is moving 20.3
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 166 seconds.
The 1-sigma cross-track error in the shadow position is
1387 km.
The TNO has an absolute magnitude Hv=7.6
Diameter=182.0 km assuming a 5% albedo -- 9.0 sec chord
Diameter=74.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
Star training set for 15810, (2017/11/06 22:34UT) Object RA Dec mag sep mel Antares 16:30:30.3 -26:28:12 0.9 36.10 165 Nunki 18:56:22.2 -26:16:23 2.0 6.43 159 PPM 235418 19:04:06.8 -19:13:06 5.9 1.12 158 PPM 269246 19:04:36.4 -20:06:05 8.2 0.36 158 PPM 269266 19:05:21.6 -20:06:54 8.9 0.20 157 15810 19:06:02.8 -20:14:14 15.4 157 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 15810, (2017/11/06 22:34UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 36.10 165 Nunki 18:55:15.9 -26:17:49 2.0 6.43 159 PPM 235418 19:03:04.0 -19:14:44 5.9 1.12 158 PPM 269246 19:03:33.1 -20:07:43 8.2 0.36 158 PPM 269266 19:04:18.4 -20:08:34 8.9 0.20 157 15810 19:04:59.5 -20:15:55 15.4 157 Positions are for J2000
Event circumstances last updated at 2016/06/23 16:16:44 UT
Marc W. Buie, Southwest Research Institute