Event between 09KN30 and star GA0640:26510392 with event index number of 196329
Geocentric closest approach at 2019/02/28 17:01:54 UTC
J2000 position of star is 18:18:08.1 -24:20:08
Equinox of date position of star is 18:19:18.4 -24:19:36
Stellar brightness G=17.2,
use SENSEUP=128
Star is 3 degrees from the moon.
Moon is 29% illuminated.
TNO apparent brightness V=23.3
TNO is 33.5 AU from the Sun
and 33.9 AU from the Earth.
The TNO is moving 19.0
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 237 seconds.
The 1-sigma cross-track error in the shadow position is
1472 km.
The TNO has an absolute magnitude Hv=7.9
Diameter=156.3 km assuming a 5% albedo -- 8.2 sec chord
Diameter=63.8 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 7:2EEEEE
Star training set for 09KN30, (2019/02/28 17:02UT) Object RA Dec mag sep mel Antares 16:30:35.1 -26:28:23 0.9 24.60 26 Nunki 18:56:27.1 -26:16:17 2.0 8.62 9 PPM 268291 18:22:42.1 -24:54:17 6.0 0.96 3 PPM 268162 18:17:44.5 -23:53:42 8.1 0.56 3 PPM 268214 18:19:29.2 -24:17:39 9.2 0.05 3 09KN30 18:19:18.6 -24:19:36 17.2 3 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 09KN30, (2019/02/28 17:02UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 24.60 26 Nunki 18:55:15.9 -26:17:49 2.0 8.62 9 PPM 268291 18:21:31.4 -24:54:54 6.0 0.96 3 PPM 268162 18:16:34.3 -23:54:10 8.1 0.56 3 PPM 268214 18:18:18.8 -24:18:11 9.2 0.05 3 09KN30 18:18:08.1 -24:20:08 17.2 3 Positions are for J2000
Event circumstances last updated at 2019/02/12 06:21:50 UT
Marc W. Buie, Southwest Research Institute