Event between (449097) 12UT68 and star GA1240:02772687 with event index number of 157107
Geocentric closest approach at 2018/09/21 01:27:37 UTC
J2000 position of star is 06:33:31.2 +34:52:20
Equinox of date position of star is 06:34:44.8 +34:51:25
Stellar brightness G=13.6,
use SENSEUP=64
Star is 143 degrees from the moon.
Moon is 85% illuminated.
TNO apparent brightness V=21.3
TNO is 13.7 AU from the Sun
and 13.8 AU from the Earth.
The TNO is moving 15.0
km/sec on the sky relative to the star, or,
5.4 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is
1074 km.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 4.8 sec chord
Diameter=29.6 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
Star training set for 449097, (2018/09/21 01:28UT) Object RA Dec mag sep mel Pollux 07:46:27.5 +27:58:46 1.1 16.74 160 34Bet Aur 06:00:54.2 +44:56:50 1.9 11.98 134 PPM 071742 06:33:40.5 +32:26:24 6.0 2.43 144 PPM 071753 06:33:59.9 +35:02:52 8.1 0.25 143 PPM 071744 06:33:48.1 +34:50:58 10.7 0.20 143 449097 06:34:46.0 +34:51:24 13.6 143 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 449097, (2018/09/21 01:28UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 16.74 160 34Bet Aur 05:59:31.6 +44:56:51 1.9 11.98 134 PPM 071742 06:32:27.2 +32:27:18 6.0 2.43 144 PPM 071753 06:32:45.0 +35:03:47 8.1 0.25 143 PPM 071744 06:32:33.3 +34:51:52 10.7 0.20 143 449097 06:33:31.2 +34:52:20 13.6 143 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:27:08 UT
Marc W. Buie, Southwest Research Institute