Event between (471172) 10JC80 and star UC4-336-082731 with event index number of 328024
Geocentric closest approach at 2020/05/01 06:14:38 UTC
J2000 position of star is 16:30:16.3 -22:49:30
Equinox of date position of star is 16:31:26.2 -22:51:58
Stellar brightness R=15.1,
use SENSEUP=128
Star is 113 degrees from the moon.
Moon is 55% illuminated.
TNO apparent brightness V=21.0
TNO is 32.0 AU from the Sun
and 31.1 AU from the Earth.
The TNO is moving 19.6
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 874 seconds.
The 1-sigma cross-track error in the shadow position is
5513 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 20.4 sec chord
Diameter=162.5 km assuming a 30% albedo -- 8.3 sec chord
Dynamical classification is 5:2EEE
Star training set for 471172, (2020/05/01 06:15UT) Object RA Dec mag sep mel Antares 16:30:39.4 -26:28:31 0.9 3.61 114 23Tau Sco 16:37:09.1 -28:15:23 2.8 5.54 115 22 Sco 16:31:26.8 -25:09:30 4.5 2.29 113 PPM 265625 16:32:50.4 -22:50:37 8.3 0.31 113 PPM 265584 16:30:56.4 -22:53:26 10.0 0.13 113 471172 16:31:29.4 -22:52:05 15.1 113 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 471172, (2020/05/01 06:15UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 3.61 114 23Tau Sco 16:35:53.0 -28:12:58 2.8 5.54 115 22 Sco 16:30:12.5 -25:06:55 4.5 2.29 113 PPM 265625 16:31:37.3 -22:48:05 8.3 0.31 113 PPM 265584 16:29:43.3 -22:50:50 10.0 0.13 113 471172 16:30:16.3 -22:49:30 15.1 113 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:32:46 UT
Marc W. Buie, Southwest Research Institute