Event between 98HQ151 and star UC4-381-120323 with event index number of 119683
Geocentric closest approach at 2018/05/29 22:34:59 UTC
J2000 position of star is 18:35:44.9 -13:50:51
Equinox of date position of star is 18:36:44.0 -13:49:57
Stellar brightness R=16.3,
use SENSEUP=128
Star is 27 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=23.9
TNO is 32.2 AU from the Sun
and 31.3 AU from the Earth.
The TNO is moving 19.9
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 1237 seconds.
The 1-sigma cross-track error in the shadow position is
4692 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=106.2 km assuming a 5% albedo -- 5.3 sec chord
Diameter=43.3 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 3:2E
Star training set for 98HQ151, (2018/05/29 22:35UT) Object RA Dec mag sep mel Antares 16:30:32.3 -26:28:17 0.9 32.09 9 Nunki 18:56:24.3 -26:16:20 2.0 13.26 31 PPM 234707 18:34:42.1 -14:50:19 6.1 1.13 26 PPM 234768 18:37:14.9 -13:49:03 8.3 0.11 27 98HQ151 18:36:47.5 -13:49:53 16.3 27 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 98HQ151, (2018/05/29 22:35UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 32.09 9 Nunki 18:55:15.9 -26:17:49 2.0 13.26 31 PPM 234707 18:33:39.1 -14:51:13 6.1 1.13 26 PPM 234768 18:36:12.4 -13:50:02 8.3 0.11 27 98HQ151 18:35:44.9 -13:50:51 16.3 27 Positions are for J2000
Event circumstances last updated at 2017/05/18 18:04:05 UT
Marc W. Buie, Southwest Research Institute