Event between (531142) 12FL84 and star GA0740:05326996 with event index number of 2432256
Geocentric closest approach at 2022/08/05 23:25:14 UTC
J2000 position of star is 14:59:56.9 -14:34:49
Equinox of date position of star is 15:01:10.7 -14:40:02
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 4 degrees from the moon.
Moon is 56% illuminated.
TNO apparent brightness V=23.1
TNO is 41.1 AU from the Sun
and 41.1 AU from the Earth.
The TNO is moving 5.2
km/sec on the sky relative to the star, or,
0.6 arcsec/hr.
The 1-sigma error in the time of the event is 545 seconds.
The 1-sigma cross-track error in the shadow position is
2993 km.
The TNO has an absolute magnitude Hv=6.8
Diameter=263.0 km assuming a 5% albedo -- 50.7 sec chord
Diameter=107.4 km assuming a 30% albedo -- 20.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 531142, (2022/08/05 23:25UT) Object RA Dec mag sep mel Spica 13:26:23.2 -11:16:43 1.0 23.33 26 27Bet Lib 15:18:13.6 -09:27:54 2.6 6.66 9 21Nu Lib 15:07:53.5 -16:20:35 5.2 2.32 2 PPM 229632 15:02:10.8 -15:06:52 8.3 0.50 4 PPM 229614 15:01:28.5 -14:49:02 9.0 0.16 4 531142 15:01:12.0 -14:40:08 16.5 4 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 531142, (2022/08/05 23:25UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 23.33 26 27Bet Lib 15:17:00.3 -09:22:59 2.6 6.66 9 21Nu Lib 15:06:37.6 -16:15:25 5.2 2.32 2 PPM 229632 15:00:55.6 -15:01:34 8.3 0.50 4 PPM 229614 15:00:13.3 -14:43:43 9.0 0.16 4 531142 14:59:56.9 -14:34:49 16.5 4 Positions are for J2000
Event circumstances last updated at 2022/03/16 00:56:15 UT
Marc W. Buie, Southwest Research Institute