Event between (517717) 15KZ120 and star GA1700:00958810 with event index number of 1172112
Geocentric closest approach at 2021/06/28 02:28:11 UTC
J2000 position of star is 23:31:34.4 +80:33:24
Equinox of date position of star is 23:32:18.7 +80:40:25
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=20.4
TNO is 9.5 AU from the Sun
and 9.8 AU from the Earth.
The TNO is moving 26.3
km/sec on the sky relative to the star, or,
13.3 arcsec/hr.
The 1-sigma error in the time of the event is 21 seconds.
The 1-sigma cross-track error in the shadow position is
786 km.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 2.2 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.9 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2021/06/28 02:28UT) Object RA Dec mag sep mel PPM 000431 02:59:13.5 +89:21:14 2.0 8.94 109 PPM 004304 00:10:34.0 +79:50:02 6.3 1.82 101 PPM 004210 23:48:57.2 +80:41:03 8.5 0.67 101 PPM 004169 23:36:08.3 +80:42:01 9.3 0.16 101 517717 23:32:19.3 +80:40:31 16.6 101 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 517717, (2021/06/28 02:28UT) Object RA Dec mag sep mel PPM 000431 02:31:52.9 +89:15:50 2.0 8.94 109 PPM 004304 00:09:21.0 +79:42:52 6.3 1.82 101 PPM 004210 23:47:59.8 +80:33:53 8.5 0.67 101 PPM 004169 23:35:20.7 +80:34:53 9.3 0.16 101 517717 23:31:34.4 +80:33:24 16.6 101 Positions are for J2000
Event circumstances last updated at 2021/03/11 01:31:37 UT
Marc W. Buie, Southwest Research Institute