Event between 03TJ58 and star GA1140:02176973 with event index number of 1694459
Geocentric closest approach at 2021/01/20 23:00:13 UTC
J2000 position of star is 06:23:29.3 +24:09:51
Equinox of date position of star is 06:24:46.6 +24:09:07
Stellar brightness G=14.1,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 64 degrees from the moon.
Moon is 51% illuminated.
TNO apparent brightness V=23.8
TNO is 41.6 AU from the Sun
and 40.7 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 250 seconds.
The 1-sigma cross-track error in the shadow position is
1544 km.
The TNO has an absolute magnitude Hv=7.6
Diameter=182.0 km assuming a 5% albedo -- 8.0 sec chord
Diameter=74.3 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 03TJ58, (2021/01/20 23:00UT) Object RA Dec mag sep mel Betelgeuse 05:56:18.7 +07:24:33 0.4 18.08 57 Alhena 06:38:55.7 +16:22:46 1.9 8.45 67 PPM 095919 06:26:01.6 +25:02:09 6.3 0.93 64 PPM 095926 06:26:18.3 +24:17:20 8.5 0.37 64 PPM 095888 06:24:45.7 +24:01:37 9.2 0.13 63 PPM 095880 06:24:33.5 +24:07:01 10.1 0.06 63 03TJ58 06:24:46.6 +24:09:07 14.1 64 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 03TJ58, (2021/01/20 23:00UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 18.08 57 Alhena 06:37:42.8 +16:23:57 1.9 8.45 67 PPM 095919 06:24:43.7 +25:02:55 6.3 0.93 64 PPM 095926 06:25:00.9 +24:18:07 8.5 0.37 64 PPM 095888 06:23:28.5 +24:02:21 9.2 0.13 63 PPM 095880 06:23:16.2 +24:07:45 10.1 0.06 63 03TJ58 06:23:29.3 +24:09:51 14.1 63 Positions are for J2000
Event circumstances last updated at 2021/01/18 20:47:39 UT
Marc W. Buie, Southwest Research Institute