Event between (535021) 14WL509 and star GA0920:03405556 with event index number of 2435939
Geocentric closest approach at 2025/04/16 22:53:57 UTC
J2000 position of star is 09:42:45.9 +03:57:09
Equinox of date position of star is 09:43:58.5 +03:50:44
Stellar brightness G=15.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon.
Moon is 87% illuminated.
Apparent brightness V=22.3
Object is 40.3 AU from the Sun
and 39.8 AU from the Earth.
Apparent velocity is 11.7
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 205 seconds.
The 1-sigma cross-track error in the shadow position is
1745 km.
The object has an absolute magnitude Hv=6.1
Diameter=363.1 km assuming a 5% albedo -- 31.5 sec chord
Diameter=148.2 km assuming a 30% albedo -- 12.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 535021, (2025/04/16 22:55UT) Object RA Dec mag sep mel Regulus 10:09:43.0 +11:50:33 1.3 10.21 100 PPM 156043 09:39:46.4 +04:32:02 4.7 1.28 104 PPM 156067 09:41:01.1 +04:10:10 8.3 0.83 103 PPM 156091 09:42:19.6 +03:40:43 9.5 0.47 103 PPM 156128 09:44:48.9 +04:12:05 10.5 0.41 102 535021 09:44:05.0 +03:50:09 15.0 102 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 535021, (2025/04/16 22:55UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 10.21 100 PPM 156043 09:38:27.0 +04:38:56 4.7 1.28 104 PPM 156067 09:39:41.9 +04:17:06 8.3 0.83 103 PPM 156091 09:41:00.6 +03:47:40 9.5 0.47 103 PPM 156128 09:43:29.7 +04:19:06 10.5 0.41 102 535021 09:42:45.9 +03:57:09 15.0 102 Positions are for J2000
Event circumstances last updated at 2023/03/27 03:27:21 UT
Marc W. Buie, Southwest Research Institute