Event between (28978) Ixion and star GA0580:32312501 with event index number of 1109397
Geocentric closest approach at 2022/02/22 08:59:15 UTC
J2000 position of star is 18:11:20.0 -30:19:38
Equinox of date position of star is 18:12:44.6 -30:19:15
Stellar brightness G=14.4,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 50 degrees from the moon.
Moon is 67% illuminated.
TNO apparent brightness V=19.6
TNO is 38.6 AU from the Sun
and 39.0 AU from the Earth.
The TNO is moving 20.0
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 320 seconds.
The 1-sigma cross-track error in the shadow position is
3696 km.
The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 57.4 sec chord
Diameter=468.7 km assuming a 30% albedo -- 23.4 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2022/02/22 08:59UT) Object RA Dec mag sep mel Antares 16:30:46.1 -26:28:45 0.9 22.71 27 Nunki 18:56:38.2 -26:16:02 2.0 10.47 59 PPM 297335 18:11:31.5 -30:43:22 5.2 0.48 49 PPM 297387 18:13:51.8 -30:00:24 8.1 0.39 50 PPM 297364 18:12:47.9 -30:21:05 9.6 0.03 50 28978 18:12:45.4 -30:19:14 14.4 50 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, (2022/02/22 08:59UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 22.71 27 Nunki 18:55:15.9 -26:17:49 2.0 10.47 59 PPM 297335 18:10:05.8 -30:43:43 5.2 0.48 49 PPM 297387 18:12:26.7 -30:00:49 8.1 0.39 50 PPM 297364 18:11:22.5 -30:21:28 9.6 0.03 50 28978 18:11:20.0 -30:19:38 14.4 49 Positions are for J2000
Event circumstances last updated at 2021/12/05 02:04:27 UT
Marc W. Buie, Southwest Research Institute