Event between (511555) 14UM225 and star GA1060:00175992 with event index number of 250269
Geocentric closest approach at 2019/12/10 19:39:45 UTC
J2000 position of star is 01:44:56.3 +16:35:13
Equinox of date position of star is 01:45:59.5 +16:41:02
Stellar brightness G=17.4,
use SENSEUP=128
Star is 32 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=23.5
TNO is 40.3 AU from the Sun
and 39.6 AU from the Earth.
The TNO is moving 15.5
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 214 seconds.
The 1-sigma cross-track error in the shadow position is
2891 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 12.9 sec chord
Diameter=81.5 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 511555, (2019/12/10 19:40UT) Object RA Dec mag sep mel Aldebaran 04:37:04.0 +16:32:52 0.8 40.89 9 6Bet Ari 01:55:44.7 +20:54:17 2.6 4.81 30 PPM 117485 01:36:59.8 +17:32:06 6.0 2.32 34 PPM 117657 01:47:40.5 +17:30:42 6.7 0.92 32 PPM 117644 01:46:35.7 +16:21:56 9.8 0.35 32 PPM 117650 01:47:04.2 +16:45:54 11.9 0.26 32 511555 01:46:01.1 +16:41:11 17.4 32 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 511555, (2019/12/10 19:40UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 40.89 9 6Bet Ari 01:54:38.5 +20:48:27 2.6 4.81 30 PPM 117485 01:35:55.0 +17:26:02 6.0 2.32 34 PPM 117657 01:46:35.4 +17:24:45 6.7 0.92 32 PPM 117644 01:45:30.9 +16:15:58 9.8 0.35 32 PPM 117650 01:45:59.3 +16:39:56 11.9 0.26 32 511555 01:44:56.3 +16:35:13 17.4 32 Positions are for J2000
Event circumstances last updated at 2019/06/07 22:58:56 UT
Marc W. Buie, Southwest Research Institute