Event between (559177) 15BF518 and star GA0740:05162723 with event index number of 2642764
Geocentric closest approach at 2028/04/29 16:04:19 UTC
J2000 position of star is 14:19:01.0 -15:28:48
Equinox of date position of star is 14:20:20.5 -15:35:25
Stellar brightness G=17.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon.
Moon is 24% illuminated.
Apparent brightness V=22.3
Object is 17.8 AU from the Sun
and 16.8 AU from the Earth.
Apparent velocity is 21.9
km/sec on the sky relative to the star, or,
6.5 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is
1865 km.
The object has an absolute magnitude Hv=9.9
Diameter=62.5 km assuming a 5% albedo -- 2.9 sec chord
Diameter=25.5 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 559177, (2028/04/29 15:57UT) Object RA Dec mag sep mel Spica 13:26:41.4 -11:18:30 1.0 13.78 105 PPM 228402 14:12:23.7 -16:26:04 4.2 2.13 117 PPM 228587 14:19:33.1 -14:50:10 8.5 0.81 119 PPM 228621 14:20:45.8 -15:21:59 9.1 0.25 119 559177 14:20:34.2 -15:36:33 17.0 119 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 559177, (2028/04/29 15:57UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 13.78 105 PPM 228402 14:10:50.5 -16:18:08 4.2 2.13 117 PPM 228587 14:18:00.3 -14:42:23 8.5 0.81 119 PPM 228621 14:19:12.7 -15:14:14 9.1 0.25 119 559177 14:19:01.0 -15:28:48 17.0 119 Positions are for J2000
Event circumstances last updated at 2024/03/07 04:23:39 UT
Marc W. Buie, Southwest Research Institute