Event between 04HC79 and star UC4-339-080176 with event index number of 123357
Geocentric closest approach at 2018/04/14 15:54:22 UTC
J2000 position of star is 16:39:42.3 -22:12:27
Equinox of date position of star is 16:40:46.6 -22:14:29
Stellar brightness R=16.5,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=23.5
TNO is 39.5 AU from the Sun
and 38.8 AU from the Earth.
The TNO is moving 14.8
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 554 seconds.
The 1-sigma cross-track error in the shadow position is
4451 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=201.4 km assuming a 5% albedo -- 13.6 sec chord
Diameter=82.2 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 04HC79, (2018/04/14 15:54UT) Object RA Dec mag sep mel Antares 16:30:31.9 -26:28:16 0.9 4.83 117 23Tau Sco 16:37:01.4 -28:15:09 2.8 6.07 115 PPM 232040 16:42:58.3 -19:57:29 5.8 2.34 115 PPM 265749 16:39:25.1 -22:55:43 7.7 0.76 115 PPM 265777 16:40:49.0 -22:20:05 9.2 0.09 115 04HC79 16:40:47.9 -22:14:32 16.5 115 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 04HC79, (2018/04/14 15:54UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 4.83 117 23Tau Sco 16:35:53.0 -28:12:58 2.8 6.07 115 PPM 232040 16:41:53.7 -19:55:27 5.8 2.34 115 PPM 265749 16:38:19.2 -22:53:36 7.7 0.76 115 PPM 265777 16:39:43.4 -22:18:00 9.2 0.09 115 04HC79 16:39:42.3 -22:12:27 16.5 115 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:26:22 UT
Marc W. Buie, Southwest Research Institute