Event between 98HH151 and star UC4-381-072429 with event index number of 188286
Geocentric closest approach at 2019/05/02 02:14:30 UTC
J2000 position of star is 15:55:15.2 -13:52:07
Equinox of date position of star is 15:56:19.4 -13:55:25
Stellar brightness R=16.3,
use SENSEUP=128
Star is 129 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=23.5
TNO is 32.0 AU from the Sun
and 31.0 AU from the Earth.
The TNO is moving 22.3
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 496 seconds.
The 1-sigma cross-track error in the shadow position is
3781 km.
The TNO has an absolute magnitude Hv=8.4
Diameter=128.8 km assuming a 5% albedo -- 5.8 sec chord
Diameter=52.6 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 3:2E
Star training set for 98HH151, (2019/05/02 02:14UT) Object RA Dec mag sep mel Antares 16:30:35.7 -26:28:24 0.9 14.89 118 8Bet1Sco 16:06:33.9 -19:51:25 2.6 6.42 125 PPM 230856 15:52:43.4 -14:11:26 6.2 0.92 129 PPM 230978 15:57:50.2 -13:37:50 7.8 0.47 128 PPM 230942 15:56:09.5 -13:55:43 8.9 0.04 129 98HH151 15:56:20.1 -13:55:27 16.3 128 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 98HH151, (2019/05/02 02:14UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 14.89 118 8Bet1Sco 16:05:26.2 -19:48:20 2.6 6.42 125 PPM 230856 15:51:38.4 -14:08:01 6.2 0.92 129 PPM 230978 15:56:45.4 -13:34:33 7.8 0.47 128 PPM 230942 15:55:04.6 -13:52:23 8.9 0.04 129 98HH151 15:55:15.2 -13:52:07 16.3 129 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:32:40 UT
Marc W. Buie, Southwest Research Institute