Event between (559176) 15BE518 and star GA0680:05769020 with event index number of 2643905
Geocentric closest approach at 2028/04/20 19:27:34 UTC
J2000 position of star is 13:56:53.9 -20:12:38
Equinox of date position of star is 13:58:15.1 -20:19:45
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 15% illuminated.
Apparent brightness V=20.7
Object is 16.8 AU from the Sun
and 15.8 AU from the Earth.
Apparent velocity is 21.3
km/sec on the sky relative to the star, or,
6.7 arcsec/hr.
The 1-sigma error in the time of the event is 77 seconds.
The 1-sigma cross-track error in the shadow position is
1283 km.
The object has an absolute magnitude Hv=8.5
Diameter=119.1 km assuming a 5% albedo -- 5.7 sec chord
Diameter=48.6 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
Star training set for 559176, (2028/04/20 19:30UT) Object RA Dec mag sep mel Spica 13:26:41.3 -11:18:29 1.0 11.83 142 89 Vir 13:51:24.9 -18:16:26 5.0 2.66 134 PPM 228043 13:58:01.9 -19:22:12 8.0 0.98 132 PPM 262295 13:58:36.6 -20:14:55 9.1 0.10 132 559176 13:58:27.8 -20:20:52 16.2 132 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 559176, (2028/04/20 19:30UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 11.83 142 89 Vir 13:49:52.1 -18:08:04 5.0 2.66 134 PPM 228043 13:56:28.4 -19:13:58 8.0 0.98 132 PPM 262295 13:57:02.7 -20:06:41 9.1 0.10 132 559176 13:56:53.9 -20:12:38 16.2 132 Positions are for J2000
Event circumstances last updated at 2024/06/23 21:33:13 UT
Marc W. Buie, Southwest Research Institute