Event between 12GX17 and star GA0760:04830227 with event index number of 170382
Geocentric closest approach at 2018/12/21 10:24:38 UTC
J2000 position of star is 13:37:29.4 -12:33:55
Equinox of date position of star is 13:38:29.5 -12:39:38
Stellar brightness G=11.2,
use SENSEUP=8
Star is 135 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=23.3
TNO is 33.0 AU from the Sun
and 33.4 AU from the Earth.
The TNO is moving 17.9
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 262 seconds.
The 1-sigma cross-track error in the shadow position is
2961 km.
The TNO has an absolute magnitude Hv=7.9
Diameter=155.6 km assuming a 5% albedo -- 8.7 sec chord
Diameter=63.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR
Star training set for 12GX17, (2018/12/21 10:25UT) Object RA Dec mag sep mel Spica 13:26:11.7 -11:15:35 1.0 3.32 132 PPM 227511 13:35:41.1 -13:18:40 6.4 0.94 135 PPM 227672 13:42:00.5 -12:52:43 7.5 0.88 136 PPM 227568 13:37:56.8 -12:41:07 9.5 0.14 135 12GX17 13:38:30.0 -12:39:41 11.2 135 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 12GX17, (2018/12/21 10:25UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 3.32 132 PPM 227511 13:34:40.4 -13:12:52 6.4 0.94 135 PPM 227672 13:40:59.7 -12:46:59 7.5 0.88 136 PPM 227568 13:36:56.1 -12:35:21 9.5 0.14 135 12GX17 13:37:29.4 -12:33:55 11.2 135 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:46:20 UT
Marc W. Buie, Southwest Research Institute