Event between 15KO174 and star GA0740:06261766 with event index number of 2454252
Geocentric closest approach at 2023/05/17 21:16:01 UTC
J2000 position of star is 16:42:19.0 -15:29:03
Equinox of date position of star is 16:43:33.5 -15:31:27
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=23.1
TNO is 33.1 AU from the Sun
and 32.2 AU from the Earth.
The TNO is moving 22.0
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 163 seconds.
The 1-sigma cross-track error in the shadow position is
1449 km.
The TNO has an absolute magnitude Hv=7.9
Diameter=147.2 km assuming a 5% albedo -- 7.0 sec chord
Diameter=60.1 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 7:2EEEEE
Star training set for 15KO174, (2023/05/17 21:16UT) Object RA Dec mag sep mel Antares 16:30:50.7 -26:28:55 0.9 11.35 145 13Zet Oph 16:38:26.9 -10:36:45 2.6 5.07 144 PPM 232182 16:49:46.8 -14:56:57 6.2 1.59 142 PPM 232012 16:42:23.0 -15:24:03 8.5 0.33 144 PPM 232052 16:43:44.0 -15:46:18 9.5 0.25 143 15KO174 16:43:39.0 -15:31:37 16.0 143 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 15KO174, (2023/05/17 21:16UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 11.35 145 13Zet Oph 16:37:09.6 -10:34:01 2.6 5.07 144 PPM 232182 16:48:27.0 -14:54:34 6.2 1.59 142 PPM 232012 16:41:03.0 -15:21:27 8.5 0.33 144 PPM 232052 16:42:23.8 -15:43:43 9.5 0.25 143 15KO174 16:42:19.0 -15:29:03 16.0 143 Positions are for J2000
Event circumstances last updated at 2021/10/08 00:58:39 UT
Marc W. Buie, Southwest Research Institute