Event between (432949) 12HH2 and star GA0900:04082516 with event index number of 182103
Geocentric closest approach at 2019/03/05 00:50:37 UTC
J2000 position of star is 14:14:45.3 +01:31:17
Equinox of date position of star is 14:15:43.7 +01:25:58
Stellar brightness G=16.2,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=21.2
TNO is 30.7 AU from the Sun
and 30.0 AU from the Earth.
The TNO is moving 15.4
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 125 seconds.
The 1-sigma cross-track error in the shadow position is
1924 km.
The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 22.6 sec chord
Diameter=141.6 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is 5:4E+10:8II
Star training set for 432949, (2019/03/05 00:51UT) Object RA Dec mag sep mel Arcturus 14:16:32.2 +19:05:00 0.0 17.65 119 Spica 13:26:12.3 -11:15:39 1.0 17.68 122 PPM 160430 14:13:14.1 +02:19:12 4.7 1.08 116 PPM 160423 14:12:29.7 +01:16:23 6.8 0.82 116 PPM 160468 14:15:34.9 +01:32:30 9.5 0.12 115 432949 14:15:43.9 +01:25:57 16.2 115 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 432949, (2019/03/05 00:51UT) Object RA Dec mag sep mel Arcturus 14:15:38.2 +19:10:19 0.0 17.65 119 Spica 13:25:11.5 -11:09:41 1.0 17.68 122 PPM 160430 14:12:15.7 +02:24:34 4.7 1.08 116 PPM 160423 14:11:31.0 +01:21:45 6.8 0.82 116 PPM 160468 14:14:36.3 +01:37:49 9.5 0.12 115 432949 14:14:45.3 +01:31:17 16.2 115 Positions are for J2000
Event circumstances last updated at 2019/02/12 06:28:04 UT
Marc W. Buie, Southwest Research Institute