Event between (612238) 01QR297 and star GA0820:24018324 with event index number of 2811456
Geocentric closest approach at 2022/10/22 21:08:45 UTC
J2000 position of star is 23:24:19.7 -06:00:23
Equinox of date position of star is 23:25:28.8 -05:53:00
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 172 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=23.1
TNO is 43.3 AU from the Sun
and 42.6 AU from the Earth.
The TNO is moving 18.2
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 251 seconds.
The 1-sigma cross-track error in the shadow position is
3366 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 15.0 sec chord
Diameter=110.9 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 612238, (2022/10/22 21:09UT) Object RA Dec mag sep mel Fomalhaut 22:58:54.4 -29:30:03 1.2 24.44 151 Markab 23:05:53.9 +15:19:42 2.5 21.76 156 PPM 207450 23:21:51.4 -05:46:59 6.0 0.91 171 PPM 207460 23:22:26.1 -06:04:02 7.6 0.79 171 PPM 207522 23:25:54.9 -05:53:11 9.5 0.10 172 612238 23:25:30.3 -05:52:51 16.7 172 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 612238, (2022/10/22 21:09UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 24.44 151 Markab 23:04:45.8 +15:12:18 2.5 21.76 156 PPM 207450 23:20:40.8 -05:54:30 6.0 0.91 171 PPM 207460 23:21:15.4 -06:11:33 7.6 0.79 171 PPM 207522 23:24:44.3 -06:00:43 9.5 0.10 172 612238 23:24:19.7 -06:00:23 16.7 172 Positions are for J2000
Event circumstances last updated at 2022/05/03 00:39:19 UT
Marc W. Buie, Southwest Research Institute