Event between 13RD124 and star GA0920:17914907 with event index number of 2070683
Geocentric closest approach at 2021/09/27 20:14:45 UTC
J2000 position of star is 21:53:16.4 +02:52:11
Equinox of date position of star is 21:54:21.4 +02:58:17
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 109 degrees from the moon.
Moon is 62% illuminated.
TNO apparent brightness V=23.2
TNO is 40.4 AU from the Sun
and 39.5 AU from the Earth.
The TNO is moving 20.4
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 183 seconds.
The 1-sigma cross-track error in the shadow position is
3912 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 11.1 sec chord
Diameter=91.8 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 13RD124, (2021/09/27 20:15UT) Object RA Dec mag sep mel Fomalhaut 22:58:50.8 -29:30:24 1.2 35.96 107 Markab 23:05:50.7 +15:19:21 2.5 21.50 88 11 Peg 21:48:20.1 +02:47:15 5.6 1.52 110 PPM 172434 21:56:44.8 +02:27:52 7.4 0.78 109 PPM 172390 21:54:35.1 +03:12:51 9.8 0.25 109 13RD124 21:54:22.5 +02:58:23 16.5 109 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 13RD124, (2021/09/27 20:15UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 35.96 107 Markab 23:04:45.8 +15:12:18 2.5 21.50 88 11 Peg 21:47:14.0 +02:41:10 5.6 1.52 110 PPM 172434 21:55:38.6 +02:21:39 7.4 0.78 109 PPM 172390 21:53:29.1 +03:06:39 9.8 0.25 109 13RD124 21:53:16.4 +02:52:11 16.5 109 Positions are for J2000
Event circumstances last updated at 2021/05/19 01:06:38 UT
Marc W. Buie, Southwest Research Institute