Event between (129746) 99CE119 and star GA0720:05521603 with event index number of 2143041
Geocentric closest approach at 2023/08/12 01:56:41 UTC
J2000 position of star is 15:26:42.0 -17:24:40
Equinox of date position of star is 15:28:02.3 -17:29:32
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon.
Moon is 16% illuminated.
Apparent brightness V=23.3
Object is 29.5 AU from the Sun
and 29.4 AU from the Earth.
Apparent velocity is 3.9
km/sec on the sky relative to the star, or,
0.7 arcsec/hr.
The 1-sigma error in the time of the event is 393 seconds.
The 1-sigma cross-track error in the shadow position is
1467 km.
The object has an absolute magnitude Hv=8.4
Diameter=128.2 km assuming a 5% albedo -- 32.8 sec chord
Diameter=52.4 km assuming a 30% albedo -- 13.4 sec chord
Dynamical classification is 3:2E
Star training set for 129746, (2023/08/12 01:57UT) Object RA Dec mag sep mel Antares 16:30:51.5 -26:28:56 0.9 17.09 158 27Bet Lib 15:18:16.9 -09:28:07 2.6 8.37 136 32Zet1Lib 15:29:35.5 -16:47:50 5.6 0.79 142 PPM 230220 15:26:46.0 -17:10:34 8.4 0.44 141 PPM 230233 15:27:17.4 -17:28:39 9.8 0.18 142 129746 15:28:02.4 -17:29:32 15.3 142 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 129746, (2023/08/12 01:57UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 17.09 158 27Bet Lib 15:17:00.3 -09:22:59 2.6 8.37 136 32Zet1Lib 15:28:15.4 -16:43:00 5.6 0.79 142 PPM 230220 15:25:25.8 -17:05:39 8.4 0.44 141 PPM 230233 15:25:57.0 -17:23:46 9.8 0.18 142 129746 15:26:42.0 -17:24:40 15.3 142 Positions are for J2000
Event circumstances last updated at 2023/07/28 03:52:46 UT
Marc W. Buie, Southwest Research Institute