Event between 12UL177 and star GA1200:00438458 with event index number of 357150
Geocentric closest approach at 2020/09/17 21:45:15 UTC
J2000 position of star is 02:40:20.7 +30:43:12
Equinox of date position of star is 02:41:33.1 +30:48:21
Stellar brightness G=16.2,
use SENSEUP=128
Star is 131 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=25.7
TNO is 36.1 AU from the Sun
and 35.5 AU from the Earth.
The TNO is moving 14.2
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 362 seconds.
The 1-sigma cross-track error in the shadow position is
1801 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=193.2 km assuming a 5% albedo -- 4.2 sec chord
Diameter=78.9 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is SCATEXTD
Star training set for 12UL177, (2020/09/17 21:45UT) Object RA Dec mag sep mel Aldebaran 04:37:06.7 +16:32:57 0.8 29.91 112 Hamal 02:08:20.8 +23:33:34 2.0 10.35 141 39 Ari 02:49:08.9 +29:19:55 5.6 2.20 131 PPM 067638 02:43:15.4 +31:01:23 7.9 0.42 131 PPM 067590 02:40:48.1 +30:57:53 10.6 0.23 131 12UL177 02:41:35.0 +30:48:29 16.2 131 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 12UL177, (2020/09/17 21:45UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 29.91 112 Hamal 02:07:10.7 +23:27:42 2.0 10.35 141 39 Ari 02:47:54.8 +29:14:47 5.6 2.20 131 PPM 067638 02:42:00.9 +30:56:08 7.9 0.42 131 PPM 067590 02:39:33.7 +30:52:35 10.6 0.23 131 12UL177 02:40:20.7 +30:43:12 16.2 131 Positions are for J2000
Event circumstances last updated at 2020/03/10 22:05:33 UT
Marc W. Buie, Southwest Research Institute