Event between (578559) 14DC143 and star GA0740:08078973 with event index number of 2550005
Geocentric closest approach at 2028/02/28 00:07:48 UTC
J2000 position of star is 17:25:59.8 -14:29:39
Equinox of date position of star is 17:27:15.4 -14:30:43
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon.
Moon is 6% illuminated.
TNO apparent brightness V=23.4
TNO is 18.8 AU from the Sun
and 19.0 AU from the Earth.
The TNO is moving 13.6
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 369 seconds.
The 1-sigma cross-track error in the shadow position is
2345 km.
The TNO has an absolute magnitude Hv=10.3
Diameter=52.2 km assuming a 5% albedo -- 3.8 sec chord
Diameter=21.3 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
Star training set for 578559, (2028/02/28 00:08UT) Object RA Dec mag sep mel Antares 16:31:08.3 -26:29:31 0.9 17.81 117 35Eta Oph 17:11:59.7 -15:45:28 2.6 3.97 108 53Nu Ser 17:22:24.8 -12:52:23 4.0 2.07 105 PPM 233132 17:30:43.3 -14:06:04 8.2 0.86 103 PPM 233061 17:27:50.2 -14:43:09 9.1 0.21 104 578559 17:27:36.0 -14:31:00 16.8 104 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 578559, (2028/02/28 00:08UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 17.81 117 35Eta Oph 17:10:22.7 -15:43:29 2.6 3.97 108 53Nu Ser 17:20:49.7 -12:50:49 4.0 2.07 105 PPM 233132 17:29:07.3 -14:04:50 8.2 0.86 103 PPM 233061 17:26:13.9 -14:41:48 9.1 0.21 104 578559 17:25:59.8 -14:29:39 16.8 104 Positions are for J2000
Event circumstances last updated at 2022/02/09 00:44:02 UT
Marc W. Buie, Southwest Research Institute