Event between 15VT169 and star GA1080:00397950 with event index number of 1020466
Geocentric closest approach at 2018/12/29 19:47:59 UTC
J2000 position of star is 03:36:22.4 +18:51:50
Equinox of date position of star is 03:37:27.5 +18:55:32
Stellar brightness G=15.3,
use SENSEUP=128
Star is 137 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=24.7
TNO is 40.6 AU from the Sun
and 39.8 AU from the Earth.
The TNO is moving 17.8
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 413 seconds.
The 1-sigma cross-track error in the shadow position is
4430 km.
The TNO has an absolute magnitude Hv=8.6
Diameter=117.5 km assuming a 5% albedo -- 6.6 sec chord
Diameter=48.0 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 15VT169, (2018/12/29 19:48UT) Object RA Dec mag sep mel Aldebaran 04:37:00.8 +16:32:45 0.8 14.37 124 44Zet Per 03:55:19.8 +31:56:19 2.8 13.62 128 13 Tau 03:43:24.9 +19:45:35 5.7 1.63 135 PPM 119223 03:38:07.6 +18:25:33 8.3 0.52 137 PPM 119203 03:36:23.8 +18:57:54 8.8 0.26 137 PPM 119220 03:37:59.2 +19:01:26 10.4 0.16 137 15VT169 03:37:27.8 +18:55:33 15.3 137 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 15VT169, (2018/12/29 19:48UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 14.37 124 44Zet Per 03:54:07.9 +31:53:01 2.8 13.62 128 13 Tau 03:42:18.9 +19:42:01 5.7 1.63 135 PPM 119223 03:37:02.3 +18:21:51 8.3 0.52 137 PPM 119203 03:35:18.4 +18:54:10 8.8 0.26 137 PPM 119220 03:36:53.7 +18:57:44 10.4 0.16 137 15VT169 03:36:22.4 +18:51:50 15.3 137 Positions are for J2000
Event circumstances last updated at 2018/12/01 22:11:44 UT
Marc W. Buie, Southwest Research Institute