Event between 05UN524 and star GA1280:03527231 with event index number of 1957724
Geocentric closest approach at 2022/01/09 18:50:20 UTC
J2000 position of star is 08:14:29.7 +38:38:18
Equinox of date position of star is 08:15:56.8 +38:34:13
Stellar brightness G=14.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 98 degrees from the moon.
Moon is 50% illuminated.
TNO apparent brightness V=21.7
TNO is 19.0 AU from the Sun
and 18.0 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
6.3 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is
716 km.
The TNO has an absolute magnitude Hv=8.9
Diameter=96.8 km assuming a 5% albedo -- 4.4 sec chord
Diameter=39.5 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 05UN524, (2022/01/09 18:50UT) Object RA Dec mag sep mel Pollux 07:46:39.7 +27:58:16 1.1 12.23 94 PPM 073770 08:32:45.3 +37:11:20 6.0 3.59 102 PPM 073486 08:12:48.9 +38:39:51 6.6 0.62 97 PPM 073555 08:17:21.4 +38:24:46 9.8 0.32 98 PPM 073532 08:15:57.5 +38:23:13 10.2 0.18 98 05UN524 08:15:56.9 +38:34:13 14.4 98 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 05UN524, (2022/01/09 18:50UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 12.23 94 PPM 073770 08:31:20.0 +37:15:52 6.0 3.59 102 PPM 073486 08:11:21.4 +38:43:51 6.6 0.62 97 PPM 073555 08:15:54.3 +38:28:54 9.8 0.32 98 PPM 073532 08:14:30.4 +38:27:19 10.2 0.18 98 05UN524 08:14:29.7 +38:38:18 14.4 98 Positions are for J2000
Event circumstances last updated at 2022/01/03 00:28:18 UT
Marc W. Buie, Southwest Research Institute