Event between 12HE85 and star GA0700:32435238 with event index number of 205956
Geocentric closest approach at 2018/06/24 12:41:45 UTC
J2000 position of star is 19:12:23.3 -19:57:10
Equinox of date position of star is 19:13:28.4 -19:55:15
Stellar brightness G=16.3,
use SENSEUP=128
Star is 55 degrees from the moon.
Moon is 88% illuminated.
TNO apparent brightness V=25.0
TNO is 40.3 AU from the Sun
and 39.3 AU from the Earth.
The TNO is moving 23.4
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 259 seconds.
The 1-sigma cross-track error in the shadow position is
1512 km.
The TNO has an absolute magnitude Hv=9.0
Diameter=93.8 km assuming a 5% albedo -- 4.0 sec chord
Diameter=38.3 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is 9:5EEEE
Star training set for 12HE85, (2018/06/24 12:42UT) Object RA Dec mag sep mel Antares 16:30:32.6 -26:28:17 0.9 37.85 20 Nunki 18:56:24.6 -26:16:20 2.0 7.46 51 PPM 235581 19:10:53.5 -19:46:23 6.4 0.63 54 PPM 269440 19:12:57.7 -20:20:56 8.5 0.45 55 PPM 235647 19:13:42.8 -19:38:49 9.7 0.28 55 12HE85 19:13:28.6 -19:55:14 16.3 55 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 12HE85, (2018/06/24 12:42UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 37.85 20 Nunki 18:55:15.9 -26:17:49 2.0 7.46 51 PPM 235581 19:09:48.2 -19:48:15 6.4 0.63 54 PPM 269440 19:11:52.2 -20:22:51 8.5 0.45 55 PPM 235647 19:12:37.6 -19:40:45 9.7 0.28 55 12HE85 19:12:23.3 -19:57:10 16.3 55 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:10:38 UT
Marc W. Buie, Southwest Research Institute