Event between (342842) 08YB3 and star GA1360:05731527 with event index number of 2201137
Geocentric closest approach at 2021/10/30 17:58:02 UTC
J2000 position of star is 19:45:50.2 +46:39:34
Equinox of date position of star is 19:46:29.6 +46:42:50
Stellar brightness G=16.9,
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 31% illuminated.
TNO apparent brightness V=21.1
TNO is 14.1 AU from the Sun
and 14.0 AU from the Earth.
The TNO is moving 33.6
km/sec on the sky relative to the star, or,
11.9 arcsec/hr.
The 1-sigma error in the time of the event is 32 seconds.
The 1-sigma cross-track error in the shadow position is
553 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.5 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2021/10/30 17:59UT) Object RA Dec mag sep mel Deneb 20:42:10.6 +45:21:33 1.3 9.75 115 37Gam Cyg 20:23:00.8 +40:19:39 2.2 9.19 117 PPM 058954 19:52:38.5 +47:05:05 5.3 1.11 109 PPM 058741 19:44:01.2 +47:17:52 7.7 0.72 108 PPM 058768 19:45:05.5 +47:00:50 9.2 0.38 108 PPM 058797 19:46:19.2 +46:40:31 10.3 0.05 109 342842 19:46:29.6 +46:42:50 16.9 109 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 342842, (2021/10/30 17:59UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 9.75 115 37Gam Cyg 20:22:13.7 +40:15:24 2.2 9.19 117 PPM 058954 19:51:59.1 +47:01:39 5.3 1.11 109 PPM 058741 19:43:22.5 +47:14:41 7.7 0.72 108 PPM 058768 19:44:26.4 +46:57:37 9.2 0.38 108 PPM 058797 19:45:39.7 +46:37:16 10.3 0.05 109 342842 19:45:50.2 +46:39:34 16.9 108 Positions are for J2000
Event circumstances last updated at 2021/10/25 23:19:57 UT
Marc W. Buie, Southwest Research Institute