Event between (131318) 01FL194 and star UC4-352-067131 with event index number of 58142
Geocentric closest approach at 2017/05/23 03:01:39 UTC
J2000 position of star is 13:53:08.9 -19:40:41
Equinox of date position of star is 13:54:06.3 -19:45:47
Stellar brightness R=16.6,
use SENSEUP=128
Star is 165 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=23.1
TNO is 33.8 AU from the Sun
and 32.9 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 313 seconds.
The 1-sigma cross-track error in the shadow position is
4760 km.
The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 8.0 sec chord
Diameter=67.8 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 3:2E
Star training set for 131318, (2017/05/23 03:02UT) Object RA Dec mag sep mel Spica 13:26:06.7 -11:15:06 1.0 10.85 174 89 Vir 13:50:49.2 -18:13:13 5.0 1.73 167 PPM 227986 13:54:53.7 -19:15:12 8.3 0.54 166 PPM 227964 13:53:46.4 -19:58:06 9.4 0.22 165 131318 13:54:06.3 -19:45:48 16.6 165 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 131318, (2017/05/23 03:02UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 10.85 174 89 Vir 13:49:52.2 -18:08:04 5.0 1.73 167 PPM 227986 13:53:56.4 -19:10:06 8.3 0.54 166 PPM 227964 13:52:48.9 -19:52:59 9.4 0.22 165 131318 13:53:08.9 -19:40:41 16.6 165 Positions are for J2000
Event circumstances last updated at 2017/05/15 17:59:15 UT
Marc W. Buie, Southwest Research Institute