Event between (28978) Ixion and star GA0580:32307296 with event index number of 1109574
Geocentric closest approach at 2022/05/13 12:37:26 UTC
J2000 position of star is 18:11:19.2 -30:39:37
Equinox of date position of star is 18:12:45.0 -30:39:14
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 76 degrees from the moon.
Moon is 91% illuminated.
TNO apparent brightness V=19.5
TNO is 38.5 AU from the Sun
and 37.7 AU from the Earth.
The TNO is moving 18.2
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 380 seconds.
The 1-sigma cross-track error in the shadow position is
2632 km.
The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 62.9 sec chord
Diameter=468.7 km assuming a 30% albedo -- 25.7 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2022/05/13 12:37UT) Object RA Dec mag sep mel Antares 16:30:46.9 -26:28:47 0.9 22.73 53 Kap Sco 17:44:02.2 -39:02:21 2.4 10.24 71 PPM 297335 18:11:32.3 -30:43:22 5.2 0.27 76 PPM 297387 18:13:52.7 -30:00:24 8.1 0.69 76 PPM 297360 18:12:45.2 -30:42:56 9.7 0.06 76 28978 18:12:45.7 -30:39:14 16.2 76 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, (2022/05/13 12:37UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 22.73 53 Kap Sco 17:42:29.3 -39:01:49 2.4 10.24 71 PPM 297335 18:10:05.8 -30:43:43 5.2 0.27 76 PPM 297387 18:12:26.7 -30:00:49 8.1 0.69 76 PPM 297360 18:11:18.7 -30:43:20 9.7 0.06 76 28978 18:11:19.2 -30:39:37 16.2 76 Positions are for J2000
Event circumstances last updated at 2022/03/15 01:02:12 UT
Marc W. Buie, Southwest Research Institute