Event between (281371) 08FC76 and star UC4-538-009419 with event index number of 109918
Geocentric closest approach at 2018/03/07 09:08:28 UTC
J2000 position of star is 04:32:35.0 +17:30:31
Equinox of date position of star is 04:33:38.1 +17:32:46
Stellar brightness R=15.6,
use SENSEUP=128
Star is 164 degrees from the moon.
Moon is 70% illuminated.
TNO apparent brightness V=20.2
TNO is 11.0 AU from the Sun
and 11.1 AU from the Earth.
The TNO is moving 12.5
km/sec on the sky relative to the star, or,
5.6 arcsec/hr.
The 1-sigma error in the time of the event is 57 seconds.
The 1-sigma cross-track error in the shadow position is
447 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 6.7 sec chord
Diameter=34.0 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2018/03/07 09:08UT) Object RA Dec mag sep mel Aldebaran 04:36:58.0 +16:32:40 0.8 1.28 164 Alnath 05:27:26.6 +28:37:16 1.6 16.58 149 PPM 120015 04:34:36.2 +18:03:13 6.3 0.56 164 PPM 120000 04:33:43.4 +17:53:56 9.2 0.35 164 281371 04:33:38.1 +17:32:46 15.6 164 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 281371, (2018/03/07 09:08UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 1.28 164 Alnath 05:26:17.5 +28:36:23 1.6 16.58 149 PPM 120015 04:33:33.0 +18:01:00 6.3 0.56 164 PPM 120000 04:32:40.2 +17:51:41 9.2 0.35 164 281371 04:32:35.0 +17:30:31 15.6 164 Positions are for J2000
Event circumstances last updated at 2018/03/06 17:21:09 UT
Marc W. Buie, Southwest Research Institute