Event between (501214) 13TC146 and star GA0780:22037381 with event index number of 2453263
Geocentric closest approach at 2025/12/09 20:33:22 UTC
J2000 position of star is 22:37:23.5 -11:39:36
Equinox of date position of star is 22:38:39.0 -11:32:09
Stellar brightness G=14.4,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 167 degrees from the moon.
Moon is 70% illuminated.
Apparent brightness V=21.3
Object is 27.9 AU from the Sun
and 28.1 AU from the Earth.
Apparent velocity is 11.2
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 103 seconds.
The 1-sigma cross-track error in the shadow position is
1048 km.
The object has an absolute magnitude Hv=6.6
Diameter=279.3 km assuming a 5% albedo -- 25.5 sec chord
Diameter=114.0 km assuming a 30% albedo -- 10.4 sec chord
Dynamical classification is CENTAURR
Star training set for 501214, (2025/12/09 20:32UT) Object RA Dec mag sep mel Fomalhaut 22:59:04.6 -29:29:02 1.2 18.57 158 70 Aqr 22:49:52.0 -10:25:04 6.2 2.94 164 PPM 240521 22:38:28.8 -11:35:46 7.7 0.10 168 501214 22:38:45.7 -11:31:29 14.4 167 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 501214, (2025/12/09 20:32UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 18.57 158 70 Aqr 22:48:30.3 -10:33:20 6.2 2.94 164 PPM 240521 22:37:06.5 -11:43:52 7.7 0.10 168 501214 22:37:23.5 -11:39:36 14.4 167 Positions are for J2000
Event circumstances last updated at 2023/10/25 01:47:05 UT
Marc W. Buie, Southwest Research Institute