Event between 03HM57 and star GA0540:24026800 with event index number of 1999997
Geocentric closest approach at 2021/07/29 16:21:31 UTC
J2000 position of star is 17:51:39.4 -34:31:00
Equinox of date position of star is 17:53:04.8 -34:31:15
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 106 degrees from the moon.
Moon is 68% illuminated.
TNO apparent brightness V=20.3
TNO is 14.7 AU from the Sun
and 13.9 AU from the Earth.
The TNO is moving 13.7
km/sec on the sky relative to the star, or,
4.9 arcsec/hr.
The 1-sigma error in the time of the event is 159 seconds.
The 1-sigma cross-track error in the shadow position is
731 km.
The TNO has an absolute magnitude Hv=8.5
Diameter=120.2 km assuming a 5% albedo -- 8.7 sec chord
Diameter=49.1 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CENTAURR
Star training set for 03HM57, (2021/07/29 16:22UT) Object RA Dec mag sep mel Antares 16:30:44.0 -26:28:41 0.9 19.43 125 Kap Sco 17:43:58.9 -39:02:20 2.4 4.87 107 PPM 296924 17:53:45.8 -34:25:15 5.6 0.17 106 PPM 296909 17:53:19.3 -34:47:11 8.0 0.27 106 PPM 296906 17:53:16.5 -34:33:08 8.8 0.05 106 03HM57 17:53:05.6 -34:31:15 16.0 106 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 03HM57, (2021/07/29 16:22UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 19.43 125 Kap Sco 17:42:29.3 -39:01:49 2.4 4.87 107 PPM 296924 17:52:19.8 -34:25:01 5.6 0.17 106 PPM 296909 17:51:52.9 -34:46:57 8.0 0.27 106 PPM 296906 17:51:50.3 -34:32:53 8.8 0.05 106 03HM57 17:51:39.4 -34:31:00 16.0 106 Positions are for J2000
Event circumstances last updated at 2021/05/17 01:05:38 UT
Marc W. Buie, Southwest Research Institute