Event between (523800) 17KZ31 and star GA1060:03254140 with event index number of 2431989
Geocentric closest approach at 2023/01/18 00:02:20 UTC
J2000 position of star is 09:32:10.5 +16:57:37
Equinox of date position of star is 09:33:24.5 +16:51:39
Stellar brightness G=14.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon.
Moon is 21% illuminated.
TNO apparent brightness V=22.0
TNO is 14.8 AU from the Sun
and 13.9 AU from the Earth.
The TNO is moving 36.6
km/sec on the sky relative to the star, or,
13.1 arcsec/hr.
The 1-sigma error in the time of the event is 24 seconds.
The 1-sigma cross-track error in the shadow position is
787 km.
The TNO has an absolute magnitude Hv=10.3
Diameter=51.3 km assuming a 5% albedo -- 1.4 sec chord
Diameter=20.9 km assuming a 30% albedo -- 0.6 sec chord
Dynamical classification is CENTAURR
Star training set for 523800, (2023/01/18 00:03UT) Object RA Dec mag sep mel Regulus 10:09:35.8 +11:51:13 1.3 10.08 94 PPM 126439 09:26:48.9 +16:29:06 6.3 1.63 105 PPM 126508 09:30:49.7 +17:33:00 8.3 0.93 105 PPM 126560 09:34:15.8 +16:23:30 9.9 0.50 104 PPM 126550 09:33:29.0 +16:40:46 10.1 0.18 104 523800 09:33:27.0 +16:51:27 14.6 104 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 523800, (2023/01/18 00:03UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 10.08 94 PPM 126439 09:25:32.4 +16:35:07 6.3 1.63 105 PPM 126508 09:29:32.9 +17:39:07 8.3 0.93 105 PPM 126560 09:32:59.5 +16:29:41 9.9 0.50 104 PPM 126550 09:32:12.6 +16:46:56 10.1 0.18 104 523800 09:32:10.5 +16:57:37 14.6 104 Positions are for J2000
Event circumstances last updated at 2022/04/16 00:17:41 UT
Marc W. Buie, Southwest Research Institute