Event between 10WG9 and star GA1140:01780780 with event index number of 1094539
Geocentric closest approach at 2021/04/04 17:24:21 UTC
J2000 position of star is 06:03:17.4 +25:54:09
Equinox of date position of star is 06:04:35.8 +25:54:01
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 162 degrees from the moon.
Moon is 47% illuminated.
TNO apparent brightness V=22.5
TNO is 25.2 AU from the Sun
and 25.4 AU from the Earth.
The TNO is moving 10.3
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 191 seconds.
The 1-sigma cross-track error in the shadow position is
3442 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=134.9 km assuming a 5% albedo -- 13.0 sec chord
Diameter=55.1 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CENTAURR
Star training set for 10WG9, (2021/04/04 17:24UT) Object RA Dec mag sep mel Betelgeuse 05:56:19.4 +07:24:33 0.4 18.60 152 Alnath 05:27:38.3 +28:37:24 1.6 8.65 154 139 Tau 05:59:18.8 +25:57:16 4.7 1.19 161 PPM 095283 06:04:11.7 +25:52:56 8.3 0.09 162 10WG9 06:04:36.6 +25:54:01 16.5 162 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 10WG9, (2021/04/04 17:24UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 18.60 152 Alnath 05:26:17.5 +28:36:23 1.6 8.65 154 139 Tau 05:57:59.6 +25:57:14 4.7 1.19 161 PPM 095283 06:02:52.6 +25:53:02 8.3 0.09 162 10WG9 06:03:17.4 +25:54:09 16.5 162 Positions are for J2000
Event circumstances last updated at 2021/01/19 21:46:23 UT
Marc W. Buie, Southwest Research Institute