Event between (143991) 03YO179 and star GA1200:02319279 with event index number of 1639266
Geocentric closest approach at 2020/10/30 18:43:24 UTC
J2000 position of star is 06:09:20.0 +31:40:08
Equinox of date position of star is 06:10:38.7 +31:39:50
Stellar brightness G=15.5,
use SENSEUP=128
Star is 64 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=26.1
TNO is 39.6 AU from the Sun
and 39.0 AU from the Earth.
The TNO is moving 14.0
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 966 seconds.
The 1-sigma cross-track error in the shadow position is
5267 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=416.9 km assuming a 5% albedo -- 4.3 sec chord
Diameter=170.2 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is SCATEXTD
Star training set for 143991, (2020/10/30 18:43UT) Object RA Dec mag sep mel Pollux 07:46:35.3 +27:58:27 1.1 21.08 85 Alnath 05:27:36.6 +28:37:23 1.6 9.79 55 PPM 071342 06:13:42.0 +32:41:12 5.8 1.21 65 PPM 071271 06:10:27.6 +31:15:38 8.1 0.41 64 PPM 071275 06:10:35.2 +31:43:44 9.1 0.07 64 143991 06:10:41.2 +31:39:50 15.5 65 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 143991, (2020/10/30 18:43UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 21.08 85 Alnath 05:26:17.5 +28:36:23 1.6 9.79 55 PPM 071342 06:12:20.1 +32:41:36 5.8 1.21 65 PPM 071271 06:09:06.7 +31:15:55 8.1 0.41 64 PPM 071275 06:09:13.9 +31:44:02 9.1 0.07 64 143991 06:09:20.0 +31:40:08 15.5 64 Positions are for J2000
Event circumstances last updated at 2020/03/11 21:29:57 UT
Marc W. Buie, Southwest Research Institute