Event between (459865) 13XZ8 and star UC4-393-049958 with event index number of 188563
Geocentric closest approach at 2019/04/24 14:24:52 UTC
J2000 position of star is 09:49:41.2 -11:25:50
Equinox of date position of star is 09:50:35.1 -11:31:01
Stellar brightness R=14.3,
use SENSEUP=64
Star is 122 degrees from the moon.
Moon is 72% illuminated.
TNO apparent brightness V=19.3
TNO is 8.8 AU from the Sun
and 8.3 AU from the Earth.
The TNO is moving 9.1
km/sec on the sky relative to the star, or,
5.5 arcsec/hr.
The 1-sigma error in the time of the event is 44 seconds.
The 1-sigma cross-track error in the shadow position is
526 km.
The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 8.3 sec chord
Diameter=31.0 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CENTAURR
Star training set for 459865, (2019/04/24 14:25UT) Object RA Dec mag sep mel Regulus 10:09:23.9 +11:52:20 1.3 23.85 128 Alphard 09:28:32.2 -08:44:36 2.0 6.11 128 8Gam Sex 09:53:27.8 -08:11:48 4.8 3.40 123 PPM 222091 09:51:50.2 -11:49:42 8.1 0.43 121 PPM 222053 09:50:02.7 -11:45:44 9.4 0.28 122 459865 09:50:37.8 -11:31:17 14.3 121 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 459865, (2019/04/24 14:25UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 23.85 128 Alphard 09:27:35.2 -08:39:31 2.0 6.11 128 8Gam Sex 09:52:30.4 -08:06:19 4.8 3.40 123 PPM 222091 09:50:53.7 -11:44:15 8.1 0.43 121 PPM 222053 09:49:06.2 -11:40:18 9.4 0.28 122 459865 09:49:41.2 -11:25:50 14.3 122 Positions are for J2000
Event circumstances last updated at 2018/05/23 05:43:54 UT
Marc W. Buie, Southwest Research Institute