Event between (143707) 03UY117 and star GA1120:00426650 with event index number of 2468442
Geocentric closest approach at 2021/10/31 16:20:03 UTC
J2000 position of star is 03:31:47.9 +23:01:44
Equinox of date position of star is 03:33:04.7 +23:06:06
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 106 degrees from the moon.
Moon is 22% illuminated.
TNO apparent brightness V=21.4
TNO is 34.6 AU from the Sun
and 33.7 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 66 seconds.
The 1-sigma cross-track error in the shadow position is
1232 km.
The TNO has an absolute magnitude Hv=6.0
Diameter=376.7 km assuming a 5% albedo -- 16.5 sec chord
Diameter=153.8 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 5:2EEE
Star training set for 143707, (2021/10/31 16:20UT) Object RA Dec mag sep mel Aldebaran 04:37:10.6 +16:33:05 0.8 16.42 93 44Zet Per 03:55:30.6 +31:56:48 2.8 10.14 98 64 Ari 03:25:36.1 +24:47:59 5.5 2.41 107 66 Ari 03:29:43.4 +22:52:41 7.2 0.80 106 PPM 092581 03:32:47.9 +22:34:44 9.5 0.53 106 PPM 092561 03:31:53.4 +23:01:40 11.3 0.28 106 143707 03:33:05.0 +23:06:07 16.4 105 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 143707, (2021/10/31 16:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 16.42 93 44Zet Per 03:54:07.9 +31:53:01 2.8 10.14 98 64 Ari 03:24:18.5 +24:43:25 5.5 2.41 107 66 Ari 03:28:26.6 +22:48:13 7.2 0.80 106 PPM 092581 03:31:31.1 +22:30:21 9.5 0.53 106 PPM 092561 03:30:36.4 +22:57:15 11.3 0.28 106 143707 03:31:47.9 +23:01:44 16.4 106 Positions are for J2000
Event circumstances last updated at 2021/10/06 01:04:22 UT
Marc W. Buie, Southwest Research Institute