Event between (555758) 14DP143 and star GA0820:04731146 with event index number of 2472072
Geocentric closest approach at 2023/04/15 00:09:55 UTC
J2000 position of star is 15:24:32.7 -06:10:25
Equinox of date position of star is 15:25:45.3 -06:15:10
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon.
Moon is 32% illuminated.
TNO apparent brightness V=22.4
TNO is 29.3 AU from the Sun
and 28.4 AU from the Earth.
The TNO is moving 21.4
km/sec on the sky relative to the star, or,
3.7 arcsec/hr.
The 1-sigma error in the time of the event is 101 seconds.
The 1-sigma cross-track error in the shadow position is
1376 km.
The TNO has an absolute magnitude Hv=7.7
Diameter=175.4 km assuming a 5% albedo -- 8.3 sec chord
Diameter=71.6 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
Star training set for 555758, (2023/04/15 00:09UT) Object RA Dec mag sep mel Antares 16:30:50.3 -26:28:54 0.9 25.48 66 27Bet Lib 15:18:15.8 -09:28:03 2.6 3.71 88 PPM 198488 15:22:21.6 -05:54:27 5.4 0.92 88 PPM 198573 15:26:21.0 -06:00:00 7.5 0.29 87 PPM 198558 15:25:40.1 -06:17:40 9.1 0.05 87 555758 15:25:47.0 -06:15:17 16.1 87 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 555758, (2023/04/15 00:09UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 25.48 66 27Bet Lib 15:17:00.3 -09:22:59 2.6 3.71 88 PPM 198488 15:21:07.5 -05:49:30 5.4 0.92 88 PPM 198573 15:25:06.9 -05:55:09 7.5 0.29 87 PPM 198558 15:24:25.8 -06:12:48 9.1 0.05 87 555758 15:24:32.7 -06:10:25 16.1 87 Positions are for J2000
Event circumstances last updated at 2022/10/03 04:25:49 UT
Marc W. Buie, Southwest Research Institute