Event between (576162) 12GT41 and star GA0820:17067555 with event index number of 2522621
Geocentric closest approach at 2025/10/17 15:55:52 UTC
J2000 position of star is 18:59:27.7 -06:19:39
Equinox of date position of star is 19:00:41.1 -06:17:40
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=22.3
TNO is 17.7 AU from the Sun
and 17.9 AU from the Earth.
The TNO is moving 16.9
km/sec on the sky relative to the star, or,
4.7 arcsec/hr.
The 1-sigma error in the time of the event is 118 seconds.
The 1-sigma cross-track error in the shadow position is
1381 km.
The TNO has an absolute magnitude Hv=9.5
Diameter=73.8 km assuming a 5% albedo -- 4.4 sec chord
Diameter=30.1 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 576162, (2025/10/17 15:56UT) Object RA Dec mag sep mel Antares 16:30:59.6 -26:29:13 0.9 40.97 88 Nunki 18:56:51.8 -26:15:44 2.0 19.99 121 Eta Sct 18:58:26.5 -05:48:39 4.8 0.77 122 PPM 202437 19:02:50.2 -06:09:15 7.9 0.51 123 PPM 202394 19:01:00.4 -06:02:07 9.6 0.26 122 576162 19:00:50.7 -06:17:25 15.8 123 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 576162, (2025/10/17 15:56UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 40.97 88 Nunki 18:55:15.9 -26:17:49 2.0 19.99 121 Eta Sct 18:57:03.8 -05:50:48 4.8 0.77 122 PPM 202437 19:01:27.3 -06:11:34 7.9 0.51 123 PPM 202394 18:59:37.6 -06:04:21 9.6 0.26 122 576162 18:59:27.7 -06:19:39 15.8 122 Positions are for J2000
Event circumstances last updated at 2022/10/28 03:03:10 UT
Marc W. Buie, Southwest Research Institute