Event between (120216) 04EW95 and star GA0520:08630022 with event index number of 2139286
Geocentric closest approach at 2022/03/23 17:10:07 UTC
J2000 position of star is 15:34:32.9 -36:56:13
Equinox of date position of star is 15:35:59.2 -37:00:36
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 20 degrees from the moon.
Moon is 67% illuminated.
TNO apparent brightness V=21.1
TNO is 27.1 AU from the Sun
and 26.6 AU from the Earth.
The TNO is moving 14.0
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 124 seconds.
The 1-sigma cross-track error in the shadow position is
1623 km.
The TNO has an absolute magnitude Hv=6.6
Diameter=287.1 km assuming a 5% albedo -- 20.5 sec chord
Diameter=117.2 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is 3:2E
Star training set for 120216, (2022/03/23 17:10UT) Object RA Dec mag sep mel Antares 16:30:46.4 -26:28:46 0.9 15.67 4 Eta Lup 16:01:36.1 -38:27:29 2.8 5.27 17 PPM 293873 15:28:43.9 -36:50:38 5.9 1.46 21 PPM 294042 15:37:54.2 -37:26:46 8.4 0.58 20 PPM 293995 15:35:19.1 -37:08:48 9.6 0.19 20 PPM 294010 15:35:50.1 -37:04:18 10.6 0.07 20 120216 15:35:59.3 -37:00:36 14.8 20 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 120216, (2022/03/23 17:10UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 15.67 4 Eta Lup 16:00:07.3 -38:23:48 2.8 5.27 17 PPM 293873 15:27:18.1 -36:46:04 5.9 1.46 21 PPM 294042 15:36:27.4 -37:22:26 8.4 0.58 20 PPM 293995 15:33:52.7 -37:04:24 9.6 0.19 20 PPM 294010 15:34:23.7 -36:59:55 10.6 0.07 20 120216 15:34:32.9 -36:56:13 14.8 20 Positions are for J2000
Event circumstances last updated at 2022/03/14 01:00:43 UT
Marc W. Buie, Southwest Research Institute