Event between 14WC509 and star GA1140:02810587 with event index number of 1800494
Geocentric closest approach at 2021/05/03 19:41:22 UTC
J2000 position of star is 07:22:27.4 +24:19:55
Equinox of date position of star is 07:23:44.0 +24:17:26
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon.
Moon is 50% illuminated.
TNO apparent brightness V=22.4
TNO is 32.5 AU from the Sun
and 32.9 AU from the Earth.
The TNO is moving 17.5
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is
1255 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 13.1 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 3:2E
Star training set for 14WC509, (2021/05/03 19:41UT) Object RA Dec mag sep mel Pollux 07:46:37.1 +27:58:23 1.1 6.32 160 57 Gem 07:24:46.4 +25:00:28 5.9 0.75 155 58 Gem 07:24:45.0 +22:54:09 6.0 1.41 155 PPM 097443 07:24:32.4 +24:19:11 10.0 0.18 155 14WC509 07:23:45.0 +24:17:23 15.6 155 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 14WC509, (2021/05/03 19:41UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 6.32 160 57 Gem 07:23:28.4 +25:03:01 5.9 0.75 155 58 Gem 07:23:28.1 +22:56:42 6.0 1.41 155 PPM 097443 07:23:14.7 +24:21:44 10.0 0.18 155 14WC509 07:22:27.4 +24:19:55 15.6 155 Positions are for J2000
Event circumstances last updated at 2021/01/20 21:16:54 UT
Marc W. Buie, Southwest Research Institute