Event between (612083) 98WX31 and star GA1140:02781967 with event index number of 2805027
Geocentric closest approach at 2022/12/14 23:51:33 UTC
J2000 position of star is 07:00:02.2 +25:30:21
Equinox of date position of star is 07:01:24.6 +25:28:24
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 54 degrees from the moon.
Moon is 63% illuminated.
TNO apparent brightness V=22.8
TNO is 40.9 AU from the Sun
and 40.0 AU from the Earth.
The TNO is moving 23.5
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 593 seconds.
The 1-sigma cross-track error in the shadow position is
2027 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=270.4 km assuming a 5% albedo -- 11.5 sec chord
Diameter=110.4 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 612083, (2022/12/14 23:52UT) Object RA Dec mag sep mel Pollux 07:46:43.1 +27:58:08 1.1 10.41 44 39 Gem 07:00:12.2 +26:02:55 6.5 0.64 54 PPM 096920 07:03:31.7 +25:23:28 7.1 0.48 53 PPM 096848 07:00:45.6 +25:12:01 8.7 0.31 54 PPM 096876 07:01:41.8 +25:25:24 11.0 0.07 54 612083 07:01:26.9 +25:28:21 16.9 54 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 612083, (2022/12/14 23:52UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 10.41 44 39 Gem 06:58:47.1 +26:04:53 6.5 0.64 54 PPM 096920 07:02:07.1 +25:25:32 7.1 0.48 53 PPM 096848 06:59:21.1 +25:14:00 8.7 0.31 54 PPM 096876 07:00:17.1 +25:27:25 11.0 0.07 54 612083 07:00:02.2 +25:30:21 16.9 54 Positions are for J2000
Event circumstances last updated at 2022/05/03 00:48:34 UT
Marc W. Buie, Southwest Research Institute