Event between (471172) 10JC80 and star GA0640:12468034 with event index number of 2239354
Geocentric closest approach at 2025/09/15 00:51:54 UTC
J2000 position of star is 17:14:11.0 -24:36:51
Equinox of date position of star is 17:15:40.9 -24:38:27
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 169 degrees from the moon.
Moon is 43% illuminated.
Apparent brightness V=21.3
Object is 31.5 AU from the Sun
and 31.6 AU from the Earth.
Apparent velocity is 8.1
km/sec on the sky relative to the star, or,
1.3 arcsec/hr.
The 1-sigma error in the time of the event is 415 seconds.
The 1-sigma cross-track error in the shadow position is
1350 km.
The object has an absolute magnitude Hv=6.1
Diameter=358.1 km assuming a 5% albedo -- 44.6 sec chord
Diameter=146.2 km assuming a 30% albedo -- 18.2 sec chord
Dynamical classification is 5:2EEE
Star training set for 471172, (2025/09/15 00:52UT) Object RA Dec mag sep mel Antares 16:30:59.3 -26:29:12 0.9 10.26 160 35Eta Oph 17:11:51.2 -15:45:18 2.6 8.93 163 PPM 266746 17:23:16.3 -24:55:47 6.5 1.73 171 PPM 266603 17:16:21.5 -24:05:17 8.4 0.57 169 PPM 266606 17:16:35.2 -24:45:19 9.2 0.22 169 471172 17:15:45.4 -24:38:32 15.8 169 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 471172, (2025/09/15 00:52UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.26 160 35Eta Oph 17:10:22.7 -15:43:29 2.6 8.93 163 PPM 266746 17:21:41.5 -24:54:23 6.5 1.73 171 PPM 266603 17:14:47.4 -24:03:37 8.4 0.57 169 PPM 266606 17:15:00.6 -24:43:40 9.2 0.22 169 471172 17:14:11.0 -24:36:51 15.8 169 Positions are for J2000
Event circumstances last updated at 2024/06/18 02:53:55 UT
Marc W. Buie, Southwest Research Institute