Event between (118378) 99HT11 and star GA0720:05735334 with event index number of 1094864
Geocentric closest approach at 2022/04/09 02:05:11 UTC
J2000 position of star is 15:52:31.1 -17:38:39
Equinox of date position of star is 15:53:47.4 -17:42:32
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 48% illuminated.
TNO apparent brightness V=23.6
TNO is 39.6 AU from the Sun
and 38.9 AU from the Earth.
The TNO is moving 17.3
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 391 seconds.
The 1-sigma cross-track error in the shadow position is
2444 km.
The TNO has an absolute magnitude Hv=7.6
Diameter=182.0 km assuming a 5% albedo -- 10.5 sec chord
Diameter=74.3 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 7:4EEE
Star training set for 118378, (2022/04/09 02:05UT) Object RA Dec mag sep mel Antares 16:30:46.6 -26:28:46 0.9 12.25 143 8Bet1Sco 16:06:44.1 -19:51:53 2.6 3.75 136 46The Lib 15:55:05.8 -16:47:35 4.3 0.97 132 PPM 230840 15:52:13.4 -18:06:43 8.5 0.55 132 PPM 230873 15:53:36.9 -17:28:18 9.4 0.24 132 118378 15:53:47.7 -17:42:33 16.7 133 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 118378, (2022/04/09 02:05UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.25 143 8Bet1Sco 16:05:26.2 -19:48:20 2.6 3.75 136 46The Lib 15:53:49.7 -16:43:43 4.3 0.97 132 PPM 230840 15:50:56.7 -18:02:46 8.5 0.55 132 PPM 230873 15:52:20.4 -17:24:23 9.4 0.24 132 118378 15:52:31.1 -17:38:39 16.7 132 Positions are for J2000
Event circumstances last updated at 2022/03/14 01:01:11 UT
Marc W. Buie, Southwest Research Institute