Event between (523789) 15FN345 and star GA0940:04610341 with event index number of 2607131
Geocentric closest approach at 2025/05/15 21:11:24 UTC
J2000 position of star is 16:58:39.9 +05:43:58
Equinox of date position of star is 16:59:52.0 +05:41:50
Stellar brightness G=15.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 38 degrees from the moon.
Moon is 91% illuminated.
Apparent brightness V=22.1
Object is 38.7 AU from the Sun
and 37.8 AU from the Earth.
Apparent velocity is 23.5
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 87 seconds.
The 1-sigma cross-track error in the shadow position is
1620 km.
The object has an absolute magnitude Hv=6.2
Diameter=340.4 km assuming a 5% albedo -- 14.9 sec chord
Diameter=139.0 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is SCATEXTD
Star training set for 523789, (2025/05/15 21:11UT) Object RA Dec mag sep mel Antares 16:30:58.0 -26:29:10 0.9 32.94 21 60Bet Oph 17:44:43.6 +04:33:31 2.8 11.22 33 47 Her 16:51:33.4 +07:12:22 5.6 2.57 40 PPM 163306 16:58:34.7 +06:10:25 8.2 0.58 38 PPM 163355 17:00:49.2 +05:45:54 9.6 0.24 38 523789 16:59:54.7 +05:41:45 15.0 37 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 523789, (2025/05/15 21:11UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 32.94 21 60Bet Oph 17:43:28.3 +04:34:06 2.8 11.22 33 47 Her 16:50:19.5 +07:14:53 5.6 2.57 40 PPM 163306 16:57:20.2 +06:12:41 8.2 0.58 38 PPM 163355 16:59:34.5 +05:48:05 9.6 0.24 38 523789 16:58:39.9 +05:43:58 15.0 38 Positions are for J2000
Event circumstances last updated at 2024/06/13 03:46:47 UT
Marc W. Buie, Southwest Research Institute