Event between (559180) 15BT518 and star GA0800:04584011 with event index number of 2654620
Geocentric closest approach at 2023/05/20 11:57:49 UTC
J2000 position of star is 14:41:40.8 -08:07:13
Equinox of date position of star is 14:42:55.4 -08:13:08
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 150 degrees from the moon.
Moon is 1% illuminated.
Apparent brightness V=22.2
Object is 42.5 AU from the Sun
and 41.6 AU from the Earth.
Apparent velocity is 23.5
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is
1835 km.
The object has an absolute magnitude Hv=5.9
Diameter=394.5 km assuming a 5% albedo -- 16.9 sec chord
Diameter=161.0 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 559180, (2023/05/20 11:56UT) Object RA Dec mag sep mel Spica 13:26:25.7 -11:16:57 1.0 19.09 135 27Bet Lib 15:18:16.1 -09:28:04 2.6 8.82 157 107Mu Vir 14:44:17.7 -05:45:31 3.9 2.48 148 PPM 197859 14:45:28.3 -08:20:58 6.9 0.64 150 PPM 197794 14:41:52.1 -08:15:54 9.6 0.27 149 559180 14:42:55.6 -08:13:09 16.5 150 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 559180, (2023/05/20 11:56UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 19.09 135 27Bet Lib 15:17:00.3 -09:22:59 2.6 8.82 157 107Mu Vir 14:43:03.8 -05:39:36 3.9 2.48 148 PPM 197859 14:44:13.4 -08:15:06 6.9 0.64 150 PPM 197794 14:40:37.3 -08:09:57 9.6 0.27 149 559180 14:41:40.8 -08:07:13 16.5 150 Positions are for J2000
Event circumstances last updated at 2023/04/26 03:58:19 UT
Marc W. Buie, Southwest Research Institute