Event between (523653) 11OA60 and star GA0700:34479324 with event index number of 2625710
Geocentric closest approach at 2025/06/27 19:17:36 UTC
J2000 position of star is 21:11:48.8 -18:12:30
Equinox of date position of star is 21:13:09.5 -18:06:32
Stellar brightness G=10.8,
use SENSEUP=4 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 173 degrees from the moon.
Moon is 7% illuminated.
Apparent brightness V=20.7
Object is 36.3 AU from the Sun
and 35.5 AU from the Earth.
Apparent velocity is 18.2
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 84 seconds.
The 1-sigma cross-track error in the shadow position is
1337 km.
The object has an absolute magnitude Hv=5.0
Diameter=578.1 km assuming a 5% albedo -- 33.1 sec chord
Diameter=236.0 km assuming a 30% albedo -- 13.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 523653, (2025/06/27 19:17UT) Object RA Dec mag sep mel Fomalhaut 22:59:03.1 -29:29:11 1.2 26.66 149 PPM 238586 21:16:32.0 -17:14:18 6.2 1.17 171 PPM 238480 21:11:58.4 -18:13:33 8.1 0.33 173 PPM 238509 21:13:17.0 -18:15:27 9.1 0.16 173 523653 21:13:14.6 -18:06:09 10.8 172 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 523653, (2025/06/27 19:17UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 26.66 149 PPM 238586 21:15:06.6 -17:20:43 6.2 1.17 171 PPM 238480 21:10:32.4 -18:19:51 8.1 0.33 173 PPM 238509 21:11:51.1 -18:21:48 9.1 0.16 173 523653 21:11:48.8 -18:12:30 10.8 173 Positions are for J2000
Event circumstances last updated at 2023/12/15 05:39:58 UT
Marc W. Buie, Southwest Research Institute