Event between (471931) 13PH44 and star UC4-401-000820 with event index number of 189457
Geocentric closest approach at 2019/06/05 16:10:16 UTC
J2000 position of star is 00:41:22.1 -09:52:41
Equinox of date position of star is 00:42:14.9 -09:46:58
Stellar brightness R=15.4,
use SENSEUP=128
Star is 98 degrees from the moon.
Moon is 6% illuminated.
TNO apparent brightness V=21.5
TNO is 15.8 AU from the Sun
and 16.2 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
6.3 arcsec/hr.
The 1-sigma error in the time of the event is 212 seconds.
The 1-sigma cross-track error in the shadow position is
1196 km.
The TNO has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 4.4 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 471931, (2019/06/05 16:10UT) Object RA Dec mag sep mel Fomalhaut 22:58:43.2 -29:31:08 1.2 31.24 127 Diphda 00:44:33.8 -17:52:49 2.0 8.13 101 PPM 209218 00:44:48.8 -11:54:24 6.1 2.22 98 PPM 182574 00:43:49.6 -09:48:56 7.1 0.37 98 PPM 182540 00:42:34.4 -09:34:08 9.3 0.21 98 471931 00:42:21.0 -09:46:18 15.4 98 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 471931, (2019/06/05 16:10UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 31.24 127 Diphda 00:43:35.7 -17:59:11 2.0 8.13 101 PPM 209218 00:43:50.1 -12:00:46 6.1 2.22 98 PPM 182574 00:42:50.7 -09:55:19 7.1 0.37 98 PPM 182540 00:41:35.4 -09:40:31 9.3 0.21 98 471931 00:41:22.1 -09:52:41 15.4 98 Positions are for J2000
Event circumstances last updated at 2017/06/02 16:25:30 UT
Marc W. Buie, Southwest Research Institute