Event between (129746) 99CE119 and star GA0720:05424888 with event index number of 1099257
Geocentric closest approach at 2021/05/14 13:37:32 UTC
J2000 position of star is 15:11:16.7 -16:27:39
Equinox of date position of star is 15:12:27.6 -16:32:21
Stellar brightness G=13.2,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 146 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=23.0
TNO is 29.3 AU from the Sun
and 28.3 AU from the Earth.
The TNO is moving 23.3
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is
1095 km.
The TNO has an absolute magnitude Hv=8.4
Diameter=128.2 km assuming a 5% albedo -- 5.5 sec chord
Diameter=52.4 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 3:2E
Star training set for 129746, (2021/05/14 13:38UT) Object RA Dec mag sep mel Antares 16:30:43.3 -26:28:39 0.9 20.69 165 27Bet Lib 15:18:09.6 -09:27:38 2.6 7.21 144 21Nu Lib 15:07:49.4 -16:20:18 5.2 1.13 145 PPM 229883 15:13:03.6 -16:41:26 8.1 0.21 146 PPM 229863 15:12:20.2 -16:21:32 9.2 0.18 146 129746 15:12:28.6 -16:32:25 13.2 146 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, (2021/05/14 13:38UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.69 165 27Bet Lib 15:17:00.3 -09:22:59 2.6 7.21 144 21Nu Lib 15:06:37.6 -16:15:25 5.2 1.13 145 PPM 229883 15:11:51.6 -16:36:41 8.1 0.21 146 PPM 229863 15:11:08.3 -16:16:45 9.2 0.18 146 129746 15:11:16.7 -16:27:39 13.2 146 Positions are for J2000
Event circumstances last updated at 2021/01/21 20:46:56 UT
Marc W. Buie, Southwest Research Institute