Event between (38628) Huya and star UC4-420-066854 with event index number of 191678
Geocentric closest approach at 2019/05/20 12:11:30 UTC
J2000 position of star is 16:36:56.8 -06:10:19
Equinox of date position of star is 16:37:55.8 -06:12:29
Stellar brightness R=14.3,
use SENSEUP=64
Star is 17 degrees from the moon.
Moon is 97% illuminated.
TNO apparent brightness V=19.4
TNO is 28.7 AU from the Sun
and 27.7 AU from the Earth.
The TNO is moving 22.7
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 87 seconds.
The 1-sigma cross-track error in the shadow position is
1220 km.
The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 29.1 sec chord
Diameter=269.7 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 38628, (2019/05/20 12:12UT) Object RA Dec mag sep mel Antares 16:30:35.9 -26:28:24 0.9 20.34 12 13Zet Oph 16:38:13.7 -10:36:18 2.6 4.40 13 PPM 199844 16:39:04.0 -06:34:33 6.4 0.45 17 PPM 199825 16:37:50.8 -06:19:57 8.3 0.13 17 38628 16:37:59.0 -06:12:36 14.3 17 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 38628, (2019/05/20 12:12UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.34 12 13Zet Oph 16:37:09.6 -10:34:01 2.6 4.40 13 PPM 199844 16:38:01.6 -06:32:17 6.4 0.45 17 PPM 199825 16:36:48.5 -06:17:40 8.3 0.13 17 38628 16:36:56.8 -06:10:19 14.3 17 Positions are for J2000
Event circumstances last updated at 2018/05/24 18:24:31 UT
Marc W. Buie, Southwest Research Institute