Event between (471325) 11KT19 and star GA0980:04212694 with event index number of 256719
Geocentric closest approach at 2020/04/25 20:48:31 UTC
J2000 position of star is 15:51:59.1 +09:00:46
Equinox of date position of star is 15:52:55.4 +08:57:20
Stellar brightness G=12.4,
use SENSEUP=16
Star is 151 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=21.7
TNO is 28.1 AU from the Sun
and 27.2 AU from the Earth.
The TNO is moving 32.0
km/sec on the sky relative to the star, or,
5.8 arcsec/hr.
The 1-sigma error in the time of the event is 83 seconds.
The 1-sigma cross-track error in the shadow position is
3682 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 6.8 sec chord
Diameter=89.3 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
Star training set for 471325, (2020/04/25 20:49UT) Object RA Dec mag sep mel Arcturus 14:16:35.4 +19:04:40 0.0 25.43 131 Unukalhai 15:45:16.2 +06:21:47 2.6 3.22 153 27Lam Ser 15:47:25.9 +07:17:26 5.1 2.15 152 PPM 162053 15:56:20.3 +09:09:54 7.9 0.86 151 PPM 161979 15:52:28.6 +09:10:20 9.6 0.25 150 471325 15:52:57.9 +08:57:11 12.4 151 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 471325, (2020/04/25 20:49UT) Object RA Dec mag sep mel Arcturus 14:15:38.2 +19:10:18 0.0 25.43 131 Unukalhai 15:44:16.3 +06:25:33 2.6 3.22 153 27Lam Ser 15:46:26.3 +07:21:09 5.1 2.15 152 PPM 162053 15:55:21.6 +09:13:24 7.9 0.86 151 PPM 161979 15:51:29.9 +09:13:56 9.6 0.25 150 471325 15:51:59.1 +09:00:46 12.4 151 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:31:11 UT
Marc W. Buie, Southwest Research Institute