Event between (505412) 13QO95 and star UC4-455-003869 with event index number of 228177
Geocentric closest approach at 2019/08/20 21:22:59 UTC
J2000 position of star is 02:50:35.4 +00:53:58
Equinox of date position of star is 02:51:30.8 +00:58:22
Stellar brightness R=13.5,
use SENSEUP=32
Star is 17 degrees from the moon.
Moon is 76% illuminated.
TNO apparent brightness V=22.6
TNO is 38.7 AU from the Sun
and 38.4 AU from the Earth.
The TNO is moving 7.2
km/sec on the sky relative to the star, or,
0.9 arcsec/hr.
The 1-sigma error in the time of the event is 303 seconds.
The 1-sigma cross-track error in the shadow position is
2916 km.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 40.0 sec chord
Diameter=117.7 km assuming a 30% albedo -- 16.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 505412, (2019/08/20 21:23UT) Object RA Dec mag sep mel Aldebaran 04:37:03.0 +16:32:50 0.8 30.27 43 Menkar 03:03:18.5 +04:09:56 2.5 4.32 19 82Del Cet 02:40:29.5 +00:24:44 4.1 2.83 14 PPM 145955 02:51:21.0 +01:02:37 8.1 0.09 17 505412 02:51:36.0 +00:58:46 13.5 17 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 505412, (2019/08/20 21:23UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 30.27 43 Menkar 03:02:16.8 +04:05:22 2.5 4.32 19 82Del Cet 02:39:29.0 +00:19:43 4.1 2.83 14 PPM 145955 02:50:20.3 +00:57:48 8.1 0.09 17 505412 02:50:35.4 +00:53:58 13.5 17 Positions are for J2000
Event circumstances last updated at 2017/12/14 18:21:32 UT
Marc W. Buie, Southwest Research Institute