Event between (559178) 15BM518 and star GA0780:04189756 with event index number of 2638924
Geocentric closest approach at 2022/04/10 19:54:50 UTC
J2000 position of star is 12:07:21.7 -10:24:57
Equinox of date position of star is 12:08:30.2 -10:32:22
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 59 degrees from the moon.
Moon is 65% illuminated.
TNO apparent brightness V=21.9
TNO is 34.9 AU from the Sun
and 33.9 AU from the Earth.
The TNO is moving 23.8
km/sec on the sky relative to the star, or,
3.5 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is
1360 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=306.2 km assuming a 5% albedo -- 12.9 sec chord
Diameter=125.0 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 4:3E
Star training set for 559178, (2022/04/10 19:55UT) Object RA Dec mag sep mel Spica 13:26:22.2 -11:16:37 1.0 19.12 76 4Gam Crv 12:16:57.3 -17:39:56 2.6 7.41 65 PPM 225575 12:16:19.5 -10:26:33 6.1 1.92 61 PPM 225377 12:08:30.6 -10:51:48 8.3 0.32 59 PPM 225385 12:08:51.6 -10:26:07 9.5 0.14 59 559178 12:08:30.4 -10:32:23 16.8 60 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 559178, (2022/04/10 19:55UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 19.12 76 4Gam Crv 12:15:48.1 -17:32:30 2.6 7.41 65 PPM 225575 12:15:10.6 -10:19:07 6.1 1.92 61 PPM 225377 12:07:21.9 -10:44:22 8.3 0.32 59 PPM 225385 12:07:42.9 -10:18:41 9.5 0.14 59 559178 12:07:21.7 -10:24:57 16.8 59 Positions are for J2000
Event circumstances last updated at 2022/03/16 00:54:29 UT
Marc W. Buie, Southwest Research Institute