Event between (531077) 12DB99 and star GA0800:04457011 with event index number of 2442017
Geocentric closest approach at 2025/04/04 16:26:43 UTC
J2000 position of star is 13:59:57.9 -08:58:12
Equinox of date position of star is 14:01:11.8 -09:04:55
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon.
Moon is 46% illuminated.
Apparent brightness V=22.6
Object is 41.9 AU from the Sun
and 41.0 AU from the Earth.
Apparent velocity is 24.1
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 134 seconds.
The 1-sigma cross-track error in the shadow position is
2507 km.
The object has an absolute magnitude Hv=6.4
Diameter=331.1 km assuming a 5% albedo -- 13.2 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is 3:2E
Star training set for 531077, (2025/04/04 16:28UT) Object RA Dec mag sep mel Spica 13:26:31.6 -11:17:32 1.0 8.83 104 PPM 197011 13:56:18.0 -08:10:56 6.1 1.54 109 PPM 197107 14:02:22.7 -08:34:38 8.4 0.58 111 PPM 197088 14:01:19.6 -09:26:16 9.3 0.35 111 531077 14:01:18.3 -09:05:30 16.3 111 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 531077, (2025/04/04 16:28UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 8.83 104 PPM 197011 13:54:58.0 -08:03:33 6.1 1.54 109 PPM 197107 14:01:02.5 -08:27:21 8.4 0.58 111 PPM 197088 13:59:59.1 -09:18:58 9.3 0.35 111 531077 13:59:57.9 -08:58:12 16.3 111 Positions are for J2000
Event circumstances last updated at 2023/03/27 03:27:06 UT
Marc W. Buie, Southwest Research Institute