Event between (472235) Zhulong and star GA0700:05628412 with event index number of 2310111
Geocentric closest approach at 2028/07/04 12:50:09 UTC
J2000 position of star is 15:04:27.8 -18:12:29
Equinox of date position of star is 15:05:50.9 -18:18:08
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 28 degrees from the moon.
Moon is 95% illuminated.
Apparent brightness V=21.8
Object is 32.7 AU from the Sun
and 32.1 AU from the Earth.
Apparent velocity is 11.1
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 199 seconds.
The 1-sigma cross-track error in the shadow position is
1366 km.
The object has an absolute magnitude Hv=6.5
Diameter=295.1 km assuming a 5% albedo -- 27.1 sec chord
Diameter=120.5 km assuming a 30% albedo -- 11.1 sec chord
Dynamical classification is 5:2EEE
Star training set for 472235, (2028/07/04 12:40UT) Object RA Dec mag sep mel Antares 16:31:09.6 -26:29:34 0.9 21.26 7 27Bet Lib 15:18:32.8 -09:29:10 2.6 9.33 30 21Nu Lib 15:08:13.4 -16:21:56 5.2 2.02 28 PPM 229686 15:04:42.9 -17:44:37 7.2 0.66 28 PPM 229728 15:06:45.2 -18:28:53 9.6 0.23 28 472235 15:06:04.6 -18:19:04 16.9 28 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 472235, (2028/07/04 12:40UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 21.26 7 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.33 30 21Nu Lib 15:06:37.6 -16:15:25 5.2 2.02 28 PPM 229686 15:03:06.5 -17:38:00 7.2 0.66 28 PPM 229728 15:05:08.3 -18:22:20 9.6 0.23 28 472235 15:04:27.8 -18:12:29 16.9 28 Positions are for J2000
Event circumstances last updated at 2024/06/24 21:30:32 UT
Marc W. Buie, Southwest Research Institute