Event between 12GT41 and star GA0920:05463619 with event index number of 1583053
Geocentric closest approach at 2021/04/24 12:53:55 UTC
J2000 position of star is 17:43:14.0 +03:25:17
Equinox of date position of star is 17:44:17.8 +03:24:47
Stellar brightness G=14.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon.
Moon is 90% illuminated.
TNO apparent brightness V=21.9
TNO is 16.5 AU from the Sun
and 15.9 AU from the Earth.
The TNO is moving 12.9
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 73 seconds.
The 1-sigma cross-track error in the shadow position is
1004 km.
The TNO has an absolute magnitude Hv=9.5
Diameter=74.5 km assuming a 5% albedo -- 5.8 sec chord
Diameter=30.4 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
Star training set for 12GT41, (2021/04/24 12:54UT) Object RA Dec mag sep mel Antares 16:30:43.1 -26:28:39 0.9 34.78 72 60Bet Oph 17:44:31.6 +04:33:36 2.8 1.15 85 62Gam Oph 17:48:57.7 +02:42:03 3.8 1.37 87 PPM 164378 17:40:35.0 +03:22:56 8.0 0.93 84 PPM 164478 17:44:32.9 +03:37:50 9.6 0.23 85 PPM 164456 17:43:38.0 +03:19:14 11.1 0.19 85 12GT41 17:44:17.8 +03:24:47 14.4 86 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 12GT41, (2021/04/24 12:54UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 34.78 72 60Bet Oph 17:43:28.3 +04:34:06 2.8 1.15 85 62Gam Oph 17:47:53.5 +02:42:25 3.8 1.37 87 PPM 164378 17:39:31.2 +03:23:33 8.0 0.93 84 PPM 164478 17:43:29.1 +03:38:19 9.6 0.23 85 PPM 164456 17:42:34.1 +03:19:45 11.1 0.19 85 12GT41 17:43:14.0 +03:25:17 14.4 85 Positions are for J2000
Event circumstances last updated at 2021/04/21 22:32:05 UT
Marc W. Buie, Southwest Research Institute