Event between (119979) 02WC19 and star GA1100:01700434 with event index number of 1024683
Geocentric closest approach at 2021/01/05 00:07:21 UTC
J2000 position of star is 06:03:12.6 +20:24:31
Equinox of date position of star is 06:04:27.5 +20:24:24
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 86 degrees from the moon.
Moon is 66% illuminated.
TNO apparent brightness V=20.7
TNO is 39.9 AU from the Sun
and 38.9 AU from the Earth.
The TNO is moving 24.5
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 58 seconds.
The 1-sigma cross-track error in the shadow position is
1412 km.
The TNO has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 28.2 sec chord
Diameter=282.4 km assuming a 30% albedo -- 11.5 sec chord
Dynamical classification is 2:1E
Star training set for 119979, (2021/01/05 00:07UT) Object RA Dec mag sep mel Betelgeuse 05:56:18.6 +07:24:33 0.4 13.15 90 Alhena 06:38:55.5 +16:22:46 1.9 9.11 78 62Chi2Ori 06:05:10.1 +20:08:10 4.5 0.32 86 PPM 095290 06:04:22.1 +20:35:04 7.7 0.18 86 119979 06:04:27.7 +20:24:24 15.8 86 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 119979, (2021/01/05 00:07UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 13.15 90 Alhena 06:37:42.8 +16:23:57 1.9 9.11 78 62Chi2Ori 06:03:55.2 +20:08:18 4.5 0.32 86 PPM 095290 06:03:06.9 +20:35:11 7.7 0.18 86 119979 06:03:12.6 +20:24:31 15.8 86 Positions are for J2000
Event circumstances last updated at 2020/12/14 19:15:26 UT
Marc W. Buie, Southwest Research Institute