Event between (434390) 05CH81 and star GA0980:03661767 with event index number of 178537
Geocentric closest approach at 2019/02/01 16:09:34 UTC
J2000 position of star is 11:01:12.8 +09:52:28
Equinox of date position of star is 11:02:10.6 +09:46:30
Stellar brightness G=16.1,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 9% illuminated.
TNO apparent brightness V=24.1
TNO is 38.4 AU from the Sun
and 37.6 AU from the Earth.
The TNO is moving 20.5
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 411 seconds.
The 1-sigma cross-track error in the shadow position is
3717 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.7 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 434390, (2019/02/01 16:10UT) Object RA Dec mag sep mel Regulus 10:09:23.2 +11:52:24 1.3 13.14 128 68Del Leo 11:15:07.2 +20:25:08 2.6 11.09 115 63Chi Leo 11:06:00.1 +07:13:57 4.6 2.71 113 PPM 157450 11:03:32.5 +09:04:12 7.7 0.77 114 PPM 157468 11:04:56.8 +09:50:49 8.7 0.68 114 PPM 157426 11:02:00.4 +09:40:15 10.1 0.11 115 434390 11:02:12.6 +09:46:18 16.1 115 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 434390, (2019/02/01 16:10UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 13.14 128 68Del Leo 11:14:06.7 +20:31:23 2.6 11.09 115 63Chi Leo 11:05:00.6 +07:20:09 4.6 2.71 113 PPM 157450 11:02:32.8 +09:10:23 7.7 0.77 114 PPM 157468 11:03:57.0 +09:57:00 8.7 0.68 114 PPM 157426 11:01:00.6 +09:46:25 10.1 0.11 115 434390 11:01:12.8 +09:52:28 16.1 115 Positions are for J2000
Event circumstances last updated at 2018/06/11 22:34:46 UT
Marc W. Buie, Southwest Research Institute