Event between 11JY31 and star GA0700:33172394 with event index number of 1122540
Geocentric closest approach at 2021/03/19 04:15:21 UTC
J2000 position of star is 19:28:00.0 -19:41:07
Equinox of date position of star is 19:29:14.0 -19:38:28
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 28% illuminated.
TNO apparent brightness V=25.2
TNO is 42.3 AU from the Sun
and 42.7 AU from the Earth.
The TNO is moving 16.4
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 724 seconds.
The 1-sigma cross-track error in the shadow position is
4055 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=103.8 km assuming a 5% albedo -- 6.3 sec chord
Diameter=42.4 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 11JY31, (2021/03/19 04:15UT) Object RA Dec mag sep mel Antares 16:30:42.7 -26:28:38 0.9 41.43 171 Nunki 18:56:34.7 -26:16:07 2.0 10.02 140 45Rho2Sgr 19:23:05.1 -18:16:03 5.8 2.00 133 PPM 236018 19:29:17.7 -19:17:54 8.1 0.34 131 PPM 236033 19:30:00.5 -19:40:45 8.9 0.18 131 11JY31 19:29:14.6 -19:38:26 15.6 131 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 11JY31, (2021/03/19 04:15UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 41.43 171 Nunki 18:55:15.9 -26:17:49 2.0 10.02 140 45Rho2Sgr 19:21:51.1 -18:18:32 5.8 2.00 133 PPM 236018 19:28:03.3 -19:20:34 8.1 0.34 131 PPM 236033 19:28:45.9 -19:43:27 8.9 0.18 131 11JY31 19:28:00.0 -19:41:07 15.6 132 Positions are for J2000
Event circumstances last updated at 2021/01/19 21:17:54 UT
Marc W. Buie, Southwest Research Institute