Event between (307251) 02KW14 and star GA0620:18303369 with event index number of 2296604
Geocentric closest approach at 2025/08/13 21:40:53 UTC
J2000 position of star is 17:28:24.1 -27:20:29
Equinox of date position of star is 17:29:56.1 -27:21:35
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon.
Moon is 76% illuminated.
Apparent brightness V=22.0
Object is 43.5 AU from the Sun
and 43.0 AU from the Earth.
Apparent velocity is 10.8
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 1559 seconds.
The 1-sigma cross-track error in the shadow position is
4534 km.
The object has an absolute magnitude Hv=5.5
Diameter=457.1 km assuming a 5% albedo -- 44.0 sec chord
Diameter=186.6 km assuming a 30% albedo -- 18.0 sec chord
Dynamical classification is SCATEXTD
Star training set for 307251, (2025/08/13 21:41UT) Object RA Dec mag sep mel Antares 16:30:58.9 -26:29:12 0.9 13.18 131 34Ups Sco 17:32:30.5 -37:18:49 2.7 9.97 117 PPM 266967 17:33:19.9 -26:17:13 6.3 1.30 117 PPM 266861 17:27:42.4 -27:37:13 7.9 0.57 118 PPM 266873 17:28:20.1 -27:15:55 9.7 0.38 118 307251 17:30:00.5 -27:21:38 15.6 117 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 307251, (2025/08/13 21:41UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 13.18 131 34Ups Sco 17:30:45.8 -37:17:46 2.7 9.97 117 PPM 266967 17:31:44.4 -26:16:11 6.3 1.30 117 PPM 266861 17:26:05.9 -27:36:00 7.9 0.57 118 PPM 266873 17:26:43.9 -27:14:43 9.7 0.38 118 307251 17:28:24.1 -27:20:29 15.6 118 Positions are for J2000
Event circumstances last updated at 2024/06/18 02:52:33 UT
Marc W. Buie, Southwest Research Institute