Event between (558168) 14XQ40 and star GA0640:06771734 with event index number of 2629218
Geocentric closest approach at 2027/07/06 21:20:17 UTC
J2000 position of star is 15:11:58.2 -25:02:48
Equinox of date position of star is 15:13:16.4 -25:07:43
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 89 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=22.8
TNO is 23.6 AU from the Sun
and 22.9 AU from the Earth.
The TNO is moving 11.9
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 280 seconds.
The 1-sigma cross-track error in the shadow position is
2166 km.
The TNO has an absolute magnitude Hv=8.9
Diameter=98.2 km assuming a 5% albedo -- 8.2 sec chord
Diameter=40.1 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CENTAURR
Star training set for 558168, (2027/07/06 21:20UT) Object RA Dec mag sep mel Antares 16:31:05.9 -26:29:26 0.9 17.48 106 7Del Sco 16:01:57.9 -22:41:52 2.3 11.32 99 PPM 263889 15:11:28.0 -24:05:21 6.5 1.16 88 23 Lib 15:15:05.7 -25:24:40 6.7 0.43 89 PPM 263951 15:14:38.3 -25:07:28 9.6 0.24 89 558168 15:13:35.7 -25:08:55 16.1 89 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 558168, (2027/07/06 21:20UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 17.48 106 7Del Sco 16:00:20.0 -22:37:19 2.3 11.32 99 PPM 263889 15:09:51.3 -23:59:10 6.5 1.16 88 23 Lib 15:13:28.0 -25:18:35 6.7 0.43 89 PPM 263951 15:13:00.8 -25:01:23 9.6 0.24 89 558168 15:11:58.2 -25:02:48 16.1 89 Positions are for J2000
Event circumstances last updated at 2022/01/27 00:00:33 UT
Marc W. Buie, Southwest Research Institute