Event between 15VD171 and star GA1060:00357514 with event index number of 1016705
Geocentric closest approach at 2018/12/29 21:37:50 UTC
J2000 position of star is 03:27:50.3 +17:49:00
Equinox of date position of star is 03:28:54.9 +17:52:53
Stellar brightness G=14.9,
use SENSEUP=128
Star is 140 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=24.9
TNO is 42.1 AU from the Sun
and 41.4 AU from the Earth.
The TNO is moving 17.1
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 529 seconds.
The 1-sigma cross-track error in the shadow position is
3845 km.
The TNO has an absolute magnitude Hv=8.6
Diameter=117.5 km assuming a 5% albedo -- 6.9 sec chord
Diameter=48.0 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 15VD171, (2018/12/29 21:38UT) Object RA Dec mag sep mel Aldebaran 04:37:00.8 +16:32:45 0.8 16.31 125 Menkar 03:03:16.5 +04:09:47 2.5 15.09 150 PPM 119253 03:40:30.4 +16:35:50 6.2 3.05 138 PPM 119101 03:29:13.8 +17:13:56 8.5 0.65 140 PPM 119117 03:30:23.1 +17:51:25 9.9 0.35 140 15VD171 03:28:55.1 +17:52:54 14.9 140 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 15VD171, (2018/12/29 21:38UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 16.31 125 Menkar 03:02:16.8 +04:05:21 2.5 15.09 150 PPM 119253 03:39:25.8 +16:32:11 6.2 3.05 138 PPM 119101 03:28:09.2 +17:10:03 8.5 0.65 140 PPM 119117 03:29:18.2 +17:47:33 9.9 0.35 140 15VD171 03:27:50.3 +17:49:00 14.9 140 Positions are for J2000
Event circumstances last updated at 2018/12/01 22:11:51 UT
Marc W. Buie, Southwest Research Institute