Event between (523642) 10SS43 and star UC4-618-002246 with event index number of 322380
Geocentric closest approach at 2018/10/30 00:17:36 UTC
J2000 position of star is 00:47:02.6 +33:26:14
Equinox of date position of star is 00:48:03.9 +33:32:23
Stellar brightness R=16.1,
use SENSEUP=128
Star is 82 degrees from the moon.
Moon is 69% illuminated.
TNO apparent brightness V=21.9
TNO is 39.2 AU from the Sun
and 38.3 AU from the Earth.
The TNO is moving 24.8
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 74 seconds.
The 1-sigma cross-track error in the shadow position is
1890 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 16.1 sec chord
Diameter=162.5 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is SCATEXTD
Star training set for 523642, (2018/10/30 00:18UT) Object RA Dec mag sep mel Deneb 20:42:04.5 +45:20:54 1.3 47.73 110 57Gam1And 02:05:03.8 +42:25:09 2.3 17.52 65 PPM 065488 00:38:22.0 +35:30:11 6.4 2.80 83 PPM 065648 00:49:56.0 +33:01:37 8.0 0.64 81 PPM 065608 00:47:07.5 +33:38:23 10.0 0.22 82 523642 00:48:03.9 +33:32:23 16.1 81 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 523642, (2018/10/30 00:18UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 47.73 110 57Gam1And 02:03:54.0 +42:19:46 2.3 17.52 65 PPM 065488 00:37:21.2 +35:23:59 6.4 2.80 83 PPM 065648 00:48:54.6 +32:55:28 8.0 0.64 81 PPM 065608 00:46:06.2 +33:32:14 10.0 0.22 82 523642 00:47:02.6 +33:26:14 16.1 82 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:41:55 UT
Marc W. Buie, Southwest Research Institute