Event between (523678) 13XB26 and star GA0840:04136658 with event index number of 2624849
Geocentric closest approach at 2026/12/11 03:24:05 UTC
J2000 position of star is 12:18:43.9 -05:44:30
Equinox of date position of star is 12:19:58.9 -05:52:36
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 95 degrees from the moon.
Moon is 4% illuminated.
Apparent brightness V=22.1
Object is 45.3 AU from the Sun
and 45.6 AU from the Earth.
Apparent velocity is 13.6
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 195 seconds.
The 1-sigma cross-track error in the shadow position is
2271 km.
The object has an absolute magnitude Hv=5.4
Diameter=503.5 km assuming a 5% albedo -- 37.2 sec chord
Diameter=205.6 km assuming a 30% albedo -- 15.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 523678, (2026/12/11 03:29UT) Object RA Dec mag sep mel Spica 13:26:37.0 -11:18:04 1.0 17.30 78 4Gam Crv 12:17:11.8 -17:41:29 2.6 11.82 90 PPM 195518 12:29:14.7 -04:45:51 6.2 2.54 94 PPM 195326 12:17:45.6 -05:59:43 7.7 0.60 96 PPM 195352 12:19:45.2 -05:49:18 9.5 0.11 95 523678 12:20:07.1 -05:53:28 15.7 95 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 523678, (2026/12/11 03:29UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 17.30 78 4Gam Crv 12:15:48.1 -17:32:30 2.6 11.82 90 PPM 195518 12:27:51.4 -04:36:55 6.2 2.54 94 PPM 195326 12:16:22.5 -05:50:45 7.7 0.60 96 PPM 195352 12:18:22.0 -05:40:19 9.5 0.11 95 523678 12:18:43.9 -05:44:30 15.7 95 Positions are for J2000
Event circumstances last updated at 2024/04/18 03:45:18 UT
Marc W. Buie, Southwest Research Institute