Event between (28978) Ixion and star GA0580:29344702 with event index number of 1213209
Geocentric closest approach at 2022/10/17 11:33:38 UTC
J2000 position of star is 18:03:16.7 -30:39:56
Equinox of date position of star is 18:04:44.7 -30:39:48
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon.
Moon is 52% illuminated.
TNO apparent brightness V=19.5
TNO is 38.4 AU from the Sun
and 38.8 AU from the Earth.
The TNO is moving 16.7
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 352 seconds.
The 1-sigma cross-track error in the shadow position is
3073 km.
The TNO has an absolute magnitude Hv=3.5
Diameter=1148.2 km assuming a 5% albedo -- 72.9 sec chord
Diameter=468.7 km assuming a 30% albedo -- 29.8 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2022/10/17 11:34UT) Object RA Dec mag sep mel Antares 16:30:48.5 -26:28:50 0.9 21.00 138 Kap Sco 17:44:04.0 -39:02:22 2.4 9.38 153 10Gam2Sgr 18:07:16.4 -30:25:18 3.0 0.60 160 PPM 297208 18:06:17.5 -30:33:33 8.1 0.35 160 PPM 297166 18:04:08.3 -30:49:54 8.9 0.21 159 28978 18:04:44.9 -30:39:48 15.1 160 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, (2022/10/17 11:34UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 21.00 138 Kap Sco 17:42:29.3 -39:01:49 2.4 9.38 153 10Gam2Sgr 18:05:48.4 -30:25:31 3.0 0.60 160 PPM 297208 18:04:49.5 -30:33:44 8.1 0.35 160 PPM 297166 18:02:40.0 -30:50:01 8.9 0.21 159 28978 18:03:16.7 -30:39:56 15.1 159 Positions are for J2000
Event circumstances last updated at 2022/10/02 04:08:21 UT
Marc W. Buie, Southwest Research Institute