Event between (126154) 01YH140 and star GA1100:03172931 with event index number of 187315
Geocentric closest approach at 2019/04/16 12:08:59 UTC
J2000 position of star is 09:16:59.7 +21:18:58
Equinox of date position of star is 09:18:02.6 +21:14:17
Stellar brightness G=15.8,
use SENSEUP=128
Star is 31 degrees from the moon.
Moon is 88% illuminated.
TNO apparent brightness V=21.3
TNO is 37.1 AU from the Sun
and 36.8 AU from the Earth.
The TNO is moving 5.4
km/sec on the sky relative to the star, or,
0.7 arcsec/hr.
The 1-sigma error in the time of the event is 811 seconds.
The 1-sigma cross-track error in the shadow position is
2299 km.
The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 89.2 sec chord
Diameter=195.4 km assuming a 30% albedo -- 36.4 sec chord
Dynamical classification is 5:3EE
Star training set for 126154, (2019/04/16 12:09UT) Object RA Dec mag sep mel Regulus 10:09:23.9 +11:52:20 1.3 15.44 16 PPM 099404 09:14:43.2 +21:12:10 6.1 0.79 31 PPM 099440 09:17:05.1 +21:11:56 9.9 0.24 31 126154 09:18:05.5 +21:14:04 15.8 30 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 126154, (2019/04/16 12:09UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 15.44 16 PPM 099404 09:13:37.2 +21:17:00 6.1 0.79 31 PPM 099440 09:15:59.3 +21:16:49 9.9 0.24 31 126154 09:16:59.7 +21:18:58 15.8 31 Positions are for J2000
Event circumstances last updated at 2018/06/11 22:59:10 UT
Marc W. Buie, Southwest Research Institute