Event between (28978) Ixion and star GA0580:35708512 with event index number of 1302847
Geocentric closest approach at 2024/06/30 20:44:09 UTC
J2000 position of star is 18:20:34.1 -31:40:49
Equinox of date position of star is 18:22:08.3 -31:40:04
Stellar brightness G=17.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 121 degrees from the moon.
Moon is 29% illuminated.
Apparent brightness V=19.3
Object is 38.0 AU from the Sun
and 37.0 AU from the Earth.
Apparent velocity is 24.7
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 222 seconds.
The 1-sigma cross-track error in the shadow position is
2060 km.
The object has an absolute magnitude Hv=3.5
Diameter=1148.2 km assuming a 5% albedo -- 49.4 sec chord
Diameter=468.7 km assuming a 30% albedo -- 20.2 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2024/06/30 20:50UT) Object RA Dec mag sep mel Antares 16:30:54.8 -26:29:03 0.9 24.78 145 38Zet Sgr 19:04:10.1 -29:50:35 2.7 9.20 112 18 Sgr 18:26:35.9 -30:44:30 5.3 1.33 120 PPM 297564 18:22:01.8 -31:18:13 7.4 0.37 121 PPM 297565 18:22:04.6 -31:32:55 9.4 0.12 121 28978 18:22:09.6 -31:40:03 17.0 120 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, (2024/06/30 20:50UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 24.78 145 38Zet Sgr 19:02:36.7 -29:52:49 2.7 9.20 112 18 Sgr 18:25:01.2 -30:45:26 5.3 1.33 120 PPM 297564 18:20:26.6 -31:18:58 7.4 0.37 121 PPM 297565 18:20:29.3 -31:33:41 9.4 0.12 121 28978 18:20:34.1 -31:40:49 17.0 121 Positions are for J2000
Event circumstances last updated at 2024/03/02 05:49:03 UT
Marc W. Buie, Southwest Research Institute