Event between 12BY154 and star GA0920:03595173 with event index number of 1057330
Geocentric closest approach at 2021/02/22 14:43:15 UTC
J2000 position of star is 11:41:11.7 +03:25:31
Equinox of date position of star is 11:42:16.5 +03:18:31
Stellar brightness G=14.0,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 79 degrees from the moon.
Moon is 76% illuminated.
TNO apparent brightness V=22.4
TNO is 35.5 AU from the Sun
and 34.6 AU from the Earth.
The TNO is moving 22.8
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is
2069 km.
The TNO has an absolute magnitude Hv=6.9
Diameter=254.7 km assuming a 5% albedo -- 11.2 sec chord
Diameter=104.0 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is 5:3EE
Star training set for 12BY154, (2021/02/22 14:43UT) Object RA Dec mag sep mel Regulus 10:09:29.8 +11:51:47 1.3 24.51 54 Denebola 11:50:08.2 +14:27:14 2.1 11.31 76 89 Leo 11:35:26.9 +02:56:33 6.2 1.74 77 PPM 158073 11:40:33.2 +02:43:47 8.4 0.72 79 PPM 158092 11:41:36.2 +03:32:10 9.0 0.28 78 12BY154 11:42:16.8 +03:18:29 14.0 79 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 12BY154, (2021/02/22 14:43UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 24.51 54 Denebola 11:49:02.9 +14:34:17 2.1 11.31 76 89 Leo 11:34:21.7 +03:03:34 6.2 1.74 77 PPM 158073 11:39:28.1 +02:50:49 8.4 0.72 79 PPM 158092 11:40:31.0 +03:39:12 9.0 0.28 78 12BY154 11:41:11.7 +03:25:31 14.0 79 Positions are for J2000
Event circumstances last updated at 2021/01/18 21:45:28 UT
Marc W. Buie, Southwest Research Institute