Event between (523629) 08SP266 and star GA0840:00200690 with event index number of 2626301
Geocentric closest approach at 2025/09/21 20:15:10 UTC
J2000 position of star is 02:31:51.5 -05:07:34
Equinox of date position of star is 02:33:03.6 -05:01:15
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=21.5
Object is 36.2 AU from the Sun
and 35.4 AU from the Earth.
Apparent velocity is 20.2
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 90 seconds.
The 1-sigma cross-track error in the shadow position is
1484 km.
The object has an absolute magnitude Hv=5.8
Diameter=403.7 km assuming a 5% albedo -- 20.7 sec chord
Diameter=164.8 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 523629, (2025/09/21 20:14UT) Object RA Dec mag sep mel Aldebaran 04:37:24.0 +16:33:33 0.8 37.53 109 68Omi Cet 02:20:38.9 -02:51:43 2.0 3.79 144 81 Cet 02:38:59.7 -03:17:10 5.6 2.26 139 PPM 184694 02:31:43.7 -04:55:05 8.1 0.37 141 PPM 184723 02:32:48.1 -04:59:45 9.3 0.09 141 523629 02:33:08.7 -05:00:49 15.5 140 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 523629, (2025/09/21 20:14UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 37.53 109 68Omi Cet 02:19:20.8 -02:58:45 2.0 3.79 144 81 Cet 02:37:41.9 -03:23:48 5.6 2.26 139 PPM 184694 02:30:26.4 -05:01:52 8.1 0.37 141 PPM 184723 02:31:30.8 -05:06:31 9.3 0.09 141 523629 02:31:51.5 -05:07:34 15.5 141 Positions are for J2000
Event circumstances last updated at 2024/01/08 05:15:43 UT
Marc W. Buie, Southwest Research Institute