Event between (469987) 06HJ123 and star GA0740:06248066 with event index number of 2256128
Geocentric closest approach at 2022/06/25 12:37:00 UTC
J2000 position of star is 16:41:37.3 -15:50:19
Equinox of date position of star is 16:42:53.5 -15:52:47
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 162 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=21.4
TNO is 32.8 AU from the Sun
and 31.9 AU from the Earth.
The TNO is moving 21.8
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 60 seconds.
The 1-sigma cross-track error in the shadow position is
1170 km.
The TNO has an absolute magnitude Hv=6.2
Diameter=354.8 km assuming a 5% albedo -- 16.3 sec chord
Diameter=144.9 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
Star training set for 469987, (2022/06/25 12:37UT) Object RA Dec mag sep mel Antares 16:30:47.4 -26:28:48 0.9 10.97 164 13Zet Oph 16:38:23.9 -10:36:39 2.6 5.38 161 PPM 232182 16:49:43.7 -14:56:51 6.2 1.89 161 PPM 232012 16:42:20.0 -15:23:57 8.5 0.50 162 PPM 232025 16:42:43.2 -15:55:05 9.5 0.06 162 469987 16:42:54.4 -15:52:49 16.2 162 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 469987, (2022/06/25 12:37UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.97 164 13Zet Oph 16:37:09.6 -10:34:01 2.6 5.38 161 PPM 232182 16:48:27.0 -14:54:34 6.2 1.89 161 PPM 232012 16:41:03.0 -15:21:27 8.5 0.50 162 PPM 232025 16:41:26.0 -15:52:34 9.5 0.06 162 469987 16:41:37.3 -15:50:19 16.2 162 Positions are for J2000
Event circumstances last updated at 2022/03/12 01:43:44 UT
Marc W. Buie, Southwest Research Institute