Event between 12UD178 and star GA1120:00856268 with event index number of 1048252
Geocentric closest approach at 2019/08/09 01:23:14 UTC
J2000 position of star is 04:55:53.6 +23:41:40
Equinox of date position of star is 04:57:04.3 +23:43:27
Stellar brightness G=14.8,
use SENSEUP=128
Star is 166 degrees from the moon.
Moon is 64% illuminated.
TNO apparent brightness V=23.1
TNO is 35.6 AU from the Sun
and 36.1 AU from the Earth.
The TNO is moving 19.8
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 190 seconds.
The 1-sigma cross-track error in the shadow position is
1826 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=201.4 km assuming a 5% albedo -- 10.2 sec chord
Diameter=82.2 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 5:2EEE
Star training set for 12UD178, (2019/08/09 01:23UT) Object RA Dec mag sep mel Aldebaran 04:37:02.9 +16:32:50 0.8 8.58 173 Alnath 05:27:32.0 +28:37:20 1.6 8.40 158 98 Tau 04:59:21.5 +25:04:44 5.8 1.45 165 PPM 093877 04:55:49.1 +23:58:06 8.5 0.38 167 PPM 093890 04:56:32.1 +23:42:08 9.5 0.13 167 12UD178 04:57:04.9 +23:43:28 14.8 166 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 12UD178, (2019/08/09 01:23UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 8.58 173 Alnath 05:26:17.5 +28:36:23 1.6 8.40 158 98 Tau 04:58:09.4 +25:03:00 5.8 1.45 165 PPM 093877 04:54:37.6 +23:56:16 8.5 0.38 167 PPM 093890 04:55:20.8 +23:40:20 9.5 0.13 167 12UD178 04:55:53.6 +23:41:40 14.8 166 Positions are for J2000
Event circumstances last updated at 2019/06/07 22:31:19 UT
Marc W. Buie, Southwest Research Institute