Event between (28978) Ixion and star GA0580:29073473 with event index number of 1108270
Geocentric closest approach at 2021/06/06 12:16:53 UTC
J2000 position of star is 18:02:31.9 -30:16:29
Equinox of date position of star is 18:03:54.3 -30:16:23
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=19.5
TNO is 38.7 AU from the Sun
and 37.8 AU from the Earth.
The TNO is moving 24.0
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 248 seconds.
The 1-sigma cross-track error in the shadow position is
2379 km.
The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 47.9 sec chord
Diameter=468.7 km assuming a 30% albedo -- 19.6 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2021/06/06 12:17UT) Object RA Dec mag sep mel Antares 16:30:43.5 -26:28:40 0.9 20.81 143 34Ups Sco 17:32:13.4 -37:18:39 2.7 9.63 127 10Gam2Sgr 18:07:11.1 -30:25:18 3.0 0.72 121 PPM 297133 18:02:40.6 -30:09:47 8.5 0.29 122 PPM 297141 18:02:58.9 -30:20:53 9.0 0.21 122 28978 18:03:54.5 -30:16:23 15.8 122 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 28978, (2021/06/06 12:17UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.81 143 34Ups Sco 17:30:45.8 -37:17:46 2.7 9.63 127 10Gam2Sgr 18:05:48.4 -30:25:31 3.0 0.72 121 PPM 297133 18:01:18.1 -30:09:50 8.5 0.29 122 PPM 297141 18:01:36.2 -30:20:58 9.0 0.21 122 28978 18:02:31.9 -30:16:29 15.8 122 Positions are for J2000
Event circumstances last updated at 2021/05/20 01:09:44 UT
Marc W. Buie, Southwest Research Institute