Event between (536920) 15FM345 and star GA0840:04679854 with event index number of 2389148
Geocentric closest approach at 2025/04/26 15:59:01 UTC
J2000 position of star is 15:36:16.5 -05:11:42
Equinox of date position of star is 15:37:34.1 -05:16:29
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon.
Moon is 2% illuminated.
Apparent brightness V=22.5
Object is 42.3 AU from the Sun
and 41.3 AU from the Earth.
Apparent velocity is 23.8
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 135 seconds.
The 1-sigma cross-track error in the shadow position is
2100 km.
The object has an absolute magnitude Hv=6.2
Diameter=331.1 km assuming a 5% albedo -- 14.4 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 536920, (2025/04/26 16:02UT) Object RA Dec mag sep mel Antares 16:30:57.8 -26:29:09 0.9 24.74 131 27Bet Lib 15:18:22.4 -09:28:29 2.6 6.35 149 PPM 198946 15:48:06.3 -06:11:51 6.5 2.77 142 PPM 198799 15:39:19.1 -05:30:13 7.9 0.48 144 PPM 198749 15:37:04.2 -05:18:41 9.5 0.14 144 536920 15:37:36.8 -05:16:39 16.5 144 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 536920, (2025/04/26 16:02UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 24.74 131 27Bet Lib 15:17:00.3 -09:22:59 2.6 6.35 149 PPM 198946 15:46:45.4 -06:07:13 6.5 2.77 142 PPM 198799 15:37:58.6 -05:25:20 7.9 0.48 144 PPM 198749 15:35:43.8 -05:13:44 9.5 0.14 144 536920 15:36:16.5 -05:11:42 16.5 144 Positions are for J2000
Event circumstances last updated at 2024/06/13 03:45:53 UT
Marc W. Buie, Southwest Research Institute