Event between (523640) 10RO64 and star GA0880:00138870 with event index number of 1055415
Geocentric closest approach at 2021/02/08 18:40:36 UTC
J2000 position of star is 01:41:00.7 -00:27:31
Equinox of date position of star is 01:42:05.3 -00:21:10
Stellar brightness G=14.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 100 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=21.5
TNO is 41.2 AU from the Sun
and 41.7 AU from the Earth.
The TNO is moving 19.0
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 99 seconds.
The 1-sigma cross-track error in the shadow position is
1824 km.
The TNO has an absolute magnitude Hv=5.2
Diameter=549.6 km assuming a 5% albedo -- 28.9 sec chord
Diameter=224.4 km assuming a 30% albedo -- 11.8 sec chord
Dynamical classification is SCATEXTD
Star training set for 523640, (2021/02/08 18:42UT) Object RA Dec mag sep mel Fomalhaut 22:58:48.8 -29:30:36 1.2 48.58 53 68Omi Cet 02:20:24.9 -02:52:58 2.0 9.90 108 PPM 183660 01:38:56.3 -03:20:02 6.5 3.08 98 PPM 174960 01:42:27.0 -00:24:02 8.5 0.10 100 523640 01:42:05.5 -00:21:09 14.9 100 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 523640, (2021/02/08 18:42UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 48.58 53 68Omi Cet 02:19:20.8 -02:58:45 2.0 9.90 108 PPM 183660 01:37:52.1 -03:26:27 6.5 3.08 98 PPM 174960 01:41:22.2 -00:30:24 8.5 0.10 100 523640 01:41:00.7 -00:27:31 14.9 100 Positions are for J2000
Event circumstances last updated at 2021/01/22 20:41:53 UT
Marc W. Buie, Southwest Research Institute