Event between (523700) 14GM54 and star GA1100:11820541 with event index number of 1134467
Geocentric closest approach at 2021/05/19 03:30:56 UTC
J2000 position of star is 19:48:34.6 +20:51:32
Equinox of date position of star is 19:49:29.8 +20:54:45
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 43% illuminated.
TNO apparent brightness V=21.7
TNO is 27.3 AU from the Sun
and 27.0 AU from the Earth.
The TNO is moving 15.2
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 106 seconds.
The 1-sigma cross-track error in the shadow position is
1737 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 15.0 sec chord
Diameter=93.5 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 523700, (2021/05/19 03:31UT) Object RA Dec mag sep mel Vega 18:37:39.8 +38:48:17 0.0 23.63 108 Tarazed 19:47:16.5 +10:40:00 2.7 10.26 139 8Zet Sge 19:49:55.6 +19:11:49 5.0 1.72 133 PPM 109744 19:49:13.7 +21:25:50 8.5 0.52 131 PPM 109774 19:49:53.2 +20:27:59 9.5 0.46 132 PPM 109760 19:49:35.7 +20:51:41 10.5 0.06 132 523700 19:49:30.6 +20:54:48 16.5 132 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 523700, (2021/05/19 03:31UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 23.63 108 Tarazed 19:46:15.6 +10:36:48 2.7 10.26 139 8Zet Sge 19:48:58.7 +19:08:32 5.0 1.72 133 PPM 109744 19:48:17.9 +21:22:34 8.5 0.52 131 PPM 109774 19:48:56.9 +20:24:43 9.5 0.46 132 PPM 109760 19:48:39.6 +20:48:25 10.5 0.06 132 523700 19:48:34.6 +20:51:32 16.5 132 Positions are for J2000
Event circumstances last updated at 2021/01/21 21:01:58 UT
Marc W. Buie, Southwest Research Institute