Event between 99HV11 and star UC4-376-071128 with event index number of 327758
Geocentric closest approach at 2019/04/04 15:33:23 UTC
J2000 position of star is 15:14:17.2 -14:54:18
Equinox of date position of star is 15:15:21.1 -14:58:31
Stellar brightness R=15.5,
use SENSEUP=128
Star is 136 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=24.1
TNO is 43.9 AU from the Sun
and 43.1 AU from the Earth.
The TNO is moving 19.4
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 658 seconds.
The 1-sigma cross-track error in the shadow position is
5919 km.
The TNO has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 9.3 sec chord
Diameter=74.0 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 99HV11, (2019/04/04 15:33UT) Object RA Dec mag sep mel Antares 16:30:35.5 -26:28:23 0.9 20.97 116 27Bet Lib 15:18:02.8 -09:27:10 2.6 5.56 137 21Nu Lib 15:07:42.3 -16:19:49 5.2 2.29 138 PPM 229981 15:16:49.6 -14:45:48 8.5 0.41 136 PPM 229924 15:14:43.2 -14:51:12 9.5 0.20 136 99HV11 15:15:21.6 -14:58:33 15.5 136 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 99HV11, (2019/04/04 15:33UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.97 116 27Bet Lib 15:17:00.3 -09:22:59 2.6 5.56 137 21Nu Lib 15:06:37.6 -16:15:25 5.2 2.29 138 PPM 229981 15:15:45.2 -14:41:35 8.5 0.41 136 PPM 229924 15:13:38.9 -14:46:56 9.5 0.20 136 99HV11 15:14:17.2 -14:54:18 15.5 136 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:08:38 UT
Marc W. Buie, Southwest Research Institute