Event between (342842) 08YB3 and star GA1340:05989345 with event index number of 2201182
Geocentric closest approach at 2021/12/01 22:05:34 UTC
J2000 position of star is 19:51:47.1 +44:27:39
Equinox of date position of star is 19:52:29.0 +44:31:05
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 93 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=21.2
TNO is 14.1 AU from the Sun
and 14.3 AU from the Earth.
The TNO is moving 31.7
km/sec on the sky relative to the star, or,
11.0 arcsec/hr.
The 1-sigma error in the time of the event is 28 seconds.
The 1-sigma cross-track error in the shadow position is
814 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.6 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2021/12/01 22:07UT) Object RA Dec mag sep mel Deneb 20:42:10.8 +45:21:34 1.3 8.83 102 37Gam Cyg 20:23:00.9 +40:19:40 2.2 7.02 98 18Del Cyg 19:45:39.7 +45:11:06 3.0 1.38 92 PPM 058971 19:53:25.9 +44:03:06 8.5 0.50 93 PPM 058931 19:51:40.0 +44:22:54 9.0 0.20 93 342842 19:52:29.1 +44:31:06 16.9 93 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 342842, (2021/12/01 22:07UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 8.83 102 37Gam Cyg 20:22:13.7 +40:15:24 2.2 7.02 98 18Del Cyg 19:44:58.7 +45:07:51 3.0 1.38 92 PPM 058971 19:52:43.4 +43:59:38 8.5 0.50 93 PPM 058931 19:50:57.9 +44:19:29 9.0 0.20 93 342842 19:51:47.1 +44:27:39 16.9 93 Positions are for J2000
Event circumstances last updated at 2021/11/15 00:43:17 UT
Marc W. Buie, Southwest Research Institute