Event between (469987) 06HJ123 and star GA0720:06383172 with event index number of 1054804
Geocentric closest approach at 2021/02/06 04:05:02 UTC
J2000 position of star is 16:39:23.2 -16:32:10
Equinox of date position of star is 16:40:35.8 -16:34:35
Stellar brightness G=11.4,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 6 degrees from the moon.
Moon is 34% illuminated.
TNO apparent brightness V=21.6
TNO is 33.3 AU from the Sun
and 33.6 AU from the Earth.
The TNO is moving 17.9
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 80 seconds.
The 1-sigma cross-track error in the shadow position is
1224 km.
The TNO has an absolute magnitude Hv=6.2
Diameter=354.8 km assuming a 5% albedo -- 19.8 sec chord
Diameter=144.9 km assuming a 30% albedo -- 8.1 sec chord
Dynamical classification is 3:2E
Star training set for 469987, (2021/02/06 04:05UT) Object RA Dec mag sep mel Antares 16:30:42.3 -26:28:37 0.9 10.16 7 13Zet Oph 16:38:19.4 -10:36:30 2.6 5.99 11 PPM 232030 16:42:47.8 -17:46:53 5.0 1.31 6 PPM 231984 16:41:01.4 -16:39:11 7.9 0.13 6 PPM 231978 16:40:38.1 -16:39:26 9.5 0.08 6 469987 16:40:35.9 -16:34:35 11.4 6 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, (2021/02/06 04:05UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.16 7 13Zet Oph 16:37:09.6 -10:34:01 2.6 5.99 11 PPM 232030 16:41:34.4 -17:44:32 5.0 1.31 6 PPM 231984 16:39:48.6 -16:36:47 7.9 0.13 6 PPM 231978 16:39:25.3 -16:37:01 9.5 0.08 6 469987 16:39:23.2 -16:32:10 11.4 6 Positions are for J2000
Event circumstances last updated at 2021/01/18 21:19:57 UT
Marc W. Buie, Southwest Research Institute