Event between 12DR30 and star GA0140:01564471 with event index number of 1055312
Geocentric closest approach at 2021/02/22 22:51:49 UTC
J2000 position of star is 07:53:47.2 -75:39:03
Equinox of date position of star is 07:53:15.0 -75:42:24
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon.
Moon is 79% illuminated.
TNO apparent brightness V=20.7
TNO is 21.3 AU from the Sun
and 21.3 AU from the Earth.
The TNO is moving 31.2
km/sec on the sky relative to the star, or,
7.3 arcsec/hr.
The 1-sigma error in the time of the event is 214 seconds.
The 1-sigma cross-track error in the shadow position is
3654 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 7.3 sec chord
Diameter=92.7 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURS
Star training set for 12DR30, (2021/02/22 22:52UT) Object RA Dec mag sep mel Canopus 06:24:25.3 -52:42:29 -0.7 24.57 78 Bet Car 09:13:25.4 -69:48:16 1.7 8.30 99 PPM 369604 07:34:55.0 -74:19:21 6.5 1.82 100 PPM 369606 07:35:01.7 -75:35:31 7.5 1.13 101 PPM 369704 07:49:34.1 -75:38:49 8.8 0.24 101 12DR30 07:53:14.9 -75:42:25 16.5 101 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 12DR30, (2021/02/22 22:52UT) Object RA Dec mag sep mel Canopus 06:23:57.2 -52:41:44 -0.7 24.57 78 Bet Car 09:13:11.3 -69:43:00 1.7 8.30 99 PPM 369604 07:35:21.9 -74:16:30 6.5 1.82 100 PPM 369606 07:35:37.1 -75:32:40 7.5 1.13 101 PPM 369704 07:50:06.8 -75:35:33 8.8 0.24 101 12DR30 07:53:47.2 -75:39:03 16.5 101 Positions are for J2000
Event circumstances last updated at 2021/01/18 21:46:16 UT
Marc W. Buie, Southwest Research Institute