Event between (500885) 13JL65 and star UC4-372-078138 with event index number of 221522
Geocentric closest approach at 2019/04/08 05:17:37 UTC
J2000 position of star is 16:57:58.5 -15:37:29
Equinox of date position of star is 16:59:04.2 -15:39:10
Stellar brightness R=16.0,
use SENSEUP=128
Star is 156 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=24.7
TNO is 36.1 AU from the Sun
and 35.5 AU from the Earth.
The TNO is moving 11.1
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 916 seconds.
The 1-sigma cross-track error in the shadow position is
2375 km.
The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 8.6 sec chord
Diameter=39.0 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E
Star training set for 500885, (2019/04/08 05:18UT) Object RA Dec mag sep mel Antares 16:30:35.5 -26:28:23 0.9 12.69 160 35Eta Oph 17:11:29.1 -15:44:51 2.6 2.99 153 PPM 232348 16:57:08.7 -16:50:07 6.3 1.27 157 PPM 232423 17:00:04.3 -15:50:25 8.4 0.30 156 PPM 232388 16:58:51.0 -15:38:43 9.5 0.06 156 500885 16:59:04.7 -15:39:11 16.0 156 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 500885, (2019/04/08 05:18UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.69 160 35Eta Oph 17:10:22.7 -15:43:29 2.6 2.99 153 PPM 232348 16:56:02.0 -16:48:22 6.3 1.27 157 PPM 232423 16:58:58.0 -15:48:44 8.4 0.30 156 PPM 232388 16:57:44.9 -15:37:00 9.5 0.06 156 500885 16:57:58.5 -15:37:29 16.0 156 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:11:21 UT
Marc W. Buie, Southwest Research Institute