Event between (10370) Hylonome and star UC4-356-161146 with event index number of 116783
Geocentric closest approach at 2018/05/19 03:38:07 UTC
J2000 position of star is 18:44:10.5 -18:50:04
Equinox of date position of star is 18:45:13.6 -18:48:54
Stellar brightness R=16.4,
use SENSEUP=128
Star is 172 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=22.5
TNO is 24.0 AU from the Sun
and 23.2 AU from the Earth.
The TNO is moving 15.5
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 1323 seconds.
The 1-sigma cross-track error in the shadow position is
2635 km.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 7.4 sec chord
Diameter=46.9 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
Star training set for 10370, (2018/05/19 03:38UT) Object RA Dec mag sep mel Antares 16:30:32.2 -26:28:17 0.9 31.91 141 Nunki 18:56:24.2 -26:16:20 2.0 7.89 172 PPM 234930 18:44:00.0 -19:15:54 6.1 0.54 172 PPM 234956 18:45:13.7 -19:17:53 7.2 0.48 172 PPM 234955 18:45:09.4 -18:44:40 8.6 0.07 172 10370 18:45:15.2 -18:48:53 16.4 172 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 10370, (2018/05/19 03:38UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 31.91 141 Nunki 18:55:15.9 -26:17:49 2.0 7.89 172 PPM 234930 18:42:55.1 -19:17:04 6.1 0.54 172 PPM 234956 18:44:08.8 -19:19:04 7.2 0.48 172 PPM 234955 18:44:04.7 -18:45:51 8.6 0.07 172 10370 18:44:10.5 -18:50:04 16.4 172 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:33:17 UT
Marc W. Buie, Southwest Research Institute