Event between (576257) 12JD68 and star GA0940:04793612 with event index number of 2528207
Geocentric closest approach at 2022/06/21 14:21:18 UTC
J2000 position of star is 17:14:10.0 +05:58:12
Equinox of date position of star is 17:15:14.0 +05:56:46
Stellar brightness G=13.2,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 108 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=22.7
TNO is 28.0 AU from the Sun
and 27.1 AU from the Earth.
The TNO is moving 22.4
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is
999 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.2 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 576257, (2022/06/21 14:21UT) Object RA Dec mag sep mel Antares 16:30:47.3 -26:28:48 0.9 34.17 116 60Bet Oph 17:44:35.0 +04:33:34 2.8 7.43 101 PPM 163642 17:12:50.3 +07:52:08 6.3 2.02 109 PPM 163671 17:13:56.3 +06:01:23 8.4 0.34 109 PPM 163719 17:16:13.9 +05:46:12 9.8 0.30 108 PPM 163687 17:14:49.5 +05:47:01 10.2 0.20 108 576257 17:15:16.0 +05:56:43 13.2 108 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 576257, (2022/06/21 14:21UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 34.17 116 60Bet Oph 17:43:28.3 +04:34:06 2.8 7.43 101 PPM 163642 17:11:45.3 +07:53:41 6.3 2.02 109 PPM 163671 17:12:50.3 +06:02:54 8.4 0.34 109 PPM 163719 17:15:07.8 +05:47:39 9.8 0.30 108 PPM 163687 17:13:43.3 +05:48:30 10.2 0.20 108 576257 17:14:10.0 +05:58:12 13.2 108 Positions are for J2000
Event circumstances last updated at 2021/10/13 01:34:14 UT
Marc W. Buie, Southwest Research Institute