Event between (459865) 13XZ8 and star UC4-428-049165 with event index number of 111217
Geocentric closest approach at 2018/03/18 00:47:56 UTC
J2000 position of star is 08:59:06.5 -04:30:55
Equinox of date position of star is 09:00:01.0 -04:35:12
Stellar brightness R=13.3,
use SENSEUP=32
Star is 130 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=19.4
TNO is 9.3 AU from the Sun
and 8.6 AU from the Earth.
The TNO is moving 13.9
km/sec on the sky relative to the star, or,
8.0 arcsec/hr.
The 1-sigma error in the time of the event is 36 seconds.
The 1-sigma cross-track error in the shadow position is
462 km.
The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 5.5 sec chord
Diameter=31.0 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
Star training set for 459865, (2018/03/18 00:48UT) Object RA Dec mag sep mel Regulus 10:09:20.4 +11:52:39 1.3 23.83 147 Alphard 09:28:28.9 -08:44:18 2.0 8.20 136 PPM 191823 08:55:11.8 -05:30:16 6.4 1.51 129 PPM 191884 08:58:53.0 -04:55:51 7.1 0.45 130 PPM 191900 08:59:48.4 -04:36:47 9.5 0.06 130 459865 09:00:01.1 -04:35:12 13.3 130 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, (2018/03/18 00:48UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 23.83 147 Alphard 09:27:35.2 -08:39:31 2.0 8.20 136 PPM 191823 08:54:17.5 -05:26:04 6.4 1.51 129 PPM 191884 08:57:58.5 -04:51:35 7.1 0.45 130 PPM 191900 08:58:53.8 -04:32:30 9.5 0.06 130 459865 08:59:06.5 -04:30:55 13.3 130 Positions are for J2000
Event circumstances last updated at 2018/03/08 17:20:00 UT
Marc W. Buie, Southwest Research Institute