Event between (28978) Ixion and star GA0580:29551414 with event index number of 1108181
Geocentric closest approach at 2021/05/23 02:06:09 UTC
J2000 position of star is 18:03:51.1 -30:14:15
Equinox of date position of star is 18:05:13.5 -30:14:07
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon.
Moon is 84% illuminated.
TNO apparent brightness V=19.5
TNO is 38.7 AU from the Sun
and 37.9 AU from the Earth.
The TNO is moving 21.3
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 282 seconds.
The 1-sigma cross-track error in the shadow position is
2551 km.
The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 53.8 sec chord
Diameter=468.7 km assuming a 30% albedo -- 22.0 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2021/05/23 02:06UT) Object RA Dec mag sep mel Antares 16:30:43.3 -26:28:40 0.9 21.09 56 Kap Sco 17:43:58.1 -39:02:20 2.4 9.82 74 10Gam2Sgr 18:07:11.0 -30:25:18 3.0 0.46 77 PPM 267763 18:04:58.5 -29:51:34 7.6 0.38 77 PPM 297200 18:05:44.0 -30:02:49 9.4 0.22 77 28978 18:05:13.6 -30:14:07 16.9 77 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, (2021/05/23 02:06UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 21.09 56 Kap Sco 17:42:29.3 -39:01:49 2.4 9.82 74 10Gam2Sgr 18:05:48.4 -30:25:31 3.0 0.46 77 PPM 267763 18:03:36.3 -29:51:42 7.6 0.38 77 PPM 297200 18:04:21.7 -30:02:58 9.4 0.22 77 28978 18:03:51.1 -30:14:15 16.9 77 Positions are for J2000
Event circumstances last updated at 2021/05/20 01:09:37 UT
Marc W. Buie, Southwest Research Institute