Event between (523800) 17KZ31 and star GA0860:03918613 with event index number of 352887
Geocentric closest approach at 2019/05/26 01:13:56 UTC
J2000 position of star is 10:56:16.4 -02:28:07
Equinox of date position of star is 10:57:15.8 -02:34:21
Stellar brightness G=14.8,
use SENSEUP=128
Star is 158 degrees from the moon.
Moon is 56% illuminated.
TNO apparent brightness V=21.2
TNO is 11.7 AU from the Sun
and 11.5 AU from the Earth.
The TNO is moving 18.6
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 44 seconds.
The 1-sigma cross-track error in the shadow position is
826 km.
The TNO has an absolute magnitude Hv=10.2
Diameter=55.0 km assuming a 5% albedo -- 3.0 sec chord
Diameter=22.4 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 523800, (2019/05/26 01:14UT) Object RA Dec mag sep mel Regulus 10:09:24.2 +11:52:18 1.3 18.71 176 PPM 178324 10:54:42.9 -02:13:58 6.3 0.72 159 PPM 178351 10:59:49.5 -02:20:26 8.1 0.68 158 PPM 178348 10:58:47.1 -02:42:08 9.8 0.40 158 PPM 178343 10:58:01.3 -02:39:47 10.5 0.21 158 523800 10:57:15.8 -02:34:21 14.8 158 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 523800, (2019/05/26 01:14UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 18.71 176 PPM 178324 10:53:43.6 -02:07:45 6.3 0.72 159 PPM 178351 10:58:50.1 -02:14:11 8.1 0.68 158 PPM 178348 10:57:47.7 -02:35:54 9.8 0.40 158 PPM 178343 10:57:01.9 -02:33:33 10.5 0.21 158 523800 10:56:16.4 -02:28:07 14.8 158 Positions are for J2000
Event circumstances last updated at 2019/05/23 22:39:41 UT
Marc W. Buie, Southwest Research Institute