Event between (463368) 12VU85 and star UC4-555-013009 with event index number of 112671
Geocentric closest approach at 2017/03/30 14:03:39 UTC
J2000 position of star is 05:06:46.8 +20:58:39
Equinox of date position of star is 05:07:48.2 +20:59:57
Stellar brightness R=13.6,
use SENSEUP=64
Star is 34 degrees from the moon.
Moon is 9% illuminated.
TNO apparent brightness V=21.5
TNO is 24.8 AU from the Sun
and 25.1 AU from the Earth.
The TNO is moving 16.7
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 111 seconds.
The 1-sigma cross-track error in the shadow position is
953 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 12.5 sec chord
Diameter=85.3 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is CENTAURR
Star training set for 463368, (2017/03/30 14:04UT) Object RA Dec mag sep mel Aldebaran 04:36:54.7 +16:32:33 0.8 8.56 26 Alnath 05:27:23.0 +28:37:14 1.6 8.82 40 102Iot Tau 05:04:07.7 +21:36:47 4.6 1.05 33 PPM 094027 05:05:23.3 +21:18:02 7.3 0.64 33 PPM 094058 05:06:56.6 +20:44:56 9.7 0.32 34 PPM 094078 05:08:42.7 +21:05:22 10.2 0.23 34 463368 05:07:48.5 +20:59:57 13.6 34 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 463368, (2017/03/30 14:04UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 8.56 26 Alnath 05:26:17.5 +28:36:24 1.6 8.82 40 102Iot Tau 05:03:05.8 +21:35:23 4.6 1.05 33 PPM 094027 05:04:21.6 +21:16:40 7.3 0.64 33 PPM 094058 05:05:55.1 +20:43:36 9.7 0.32 34 PPM 094078 05:07:41.0 +21:04:04 10.2 0.23 34 463368 05:06:46.8 +20:58:39 13.6 34 Positions are for J2000
Event circumstances last updated at 2017/03/07 17:42:16 UT
Marc W. Buie, Southwest Research Institute