Event between (126155) 01YJ140 and star GA1100:03091524 with event index number of 2142813
Geocentric closest approach at 2021/10/06 00:22:28 UTC
J2000 position of star is 08:37:39.7 +20:03:42
Equinox of date position of star is 08:38:54.8 +19:59:05
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.4
TNO is 29.1 AU from the Sun
and 29.5 AU from the Earth.
The TNO is moving 17.7
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is
1405 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 10.6 sec chord
Diameter=76.7 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
Star training set for 126155, (2021/10/06 00:22UT) Object RA Dec mag sep mel Pollux 07:46:38.7 +27:58:19 1.1 14.35 73 33Eta Cnc 08:33:57.8 +20:21:57 5.3 1.22 62 PPM 098891 08:39:38.3 +20:07:47 8.3 0.22 60 PPM 098877 08:38:48.8 +19:56:11 8.9 0.05 60 126155 08:38:54.8 +19:59:05 15.7 60 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 126155, (2021/10/06 00:22UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 14.35 73 33Eta Cnc 08:32:42.4 +20:26:27 5.3 1.22 62 PPM 098891 08:38:23.1 +20:12:26 8.3 0.22 60 PPM 098877 08:37:33.7 +20:00:49 8.9 0.05 60 126155 08:37:39.7 +20:03:42 15.7 60 Positions are for J2000
Event circumstances last updated at 2021/10/04 01:47:29 UT
Marc W. Buie, Southwest Research Institute