Event between (471325) 11KT19 and star GA1000:04019003 with event index number of 1060189
Geocentric closest approach at 2021/03/15 01:14:42 UTC
J2000 position of star is 15:54:33.9 +10:34:24
Equinox of date position of star is 15:55:34.1 +10:30:45
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 134 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=22.2
TNO is 28.4 AU from the Sun
and 27.9 AU from the Earth.
The TNO is moving 25.3
km/sec on the sky relative to the star, or,
4.5 arcsec/hr.
The 1-sigma error in the time of the event is 46 seconds.
The 1-sigma cross-track error in the shadow position is
1083 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=193.2 km assuming a 5% albedo -- 7.6 sec chord
Diameter=78.9 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
Star training set for 471325, (2021/03/15 01:15UT) Object RA Dec mag sep mel Arcturus 14:16:37.8 +19:04:23 0.0 25.37 152 Unukalhai 15:45:18.8 +06:21:37 2.6 4.87 137 39 Ser 15:54:11.4 +13:07:54 6.1 2.64 134 PPM 131819 15:57:13.0 +10:14:12 8.4 0.49 133 PPM 131779 15:54:30.1 +10:16:59 8.7 0.35 134 PPM 131796 15:55:44.8 +10:31:34 10.9 0.04 134 471325 15:55:34.5 +10:30:43 16.0 134 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, (2021/03/15 01:15UT) Object RA Dec mag sep mel Arcturus 14:15:38.1 +19:10:15 0.0 25.37 152 Unukalhai 15:44:16.3 +06:25:33 2.6 4.87 137 39 Ser 15:53:11.9 +13:11:36 6.1 2.64 134 PPM 131819 15:56:12.2 +10:17:50 8.4 0.49 133 PPM 131779 15:53:29.3 +10:20:41 8.7 0.35 134 PPM 131796 15:54:44.2 +10:35:14 10.9 0.04 134 471325 15:54:33.9 +10:34:24 16.0 134 Positions are for J2000
Event circumstances last updated at 2021/01/19 21:08:42 UT
Marc W. Buie, Southwest Research Institute