Event between (54598) Bienor and star GA1320:03549018 with event index number of 1210452
Geocentric closest approach at 2022/12/09 00:25:20 UTC
J2000 position of star is 06:11:45.4 +43:58:49
Equinox of date position of star is 06:13:21.9 +43:58:25
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 18 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=18.9
TNO is 13.7 AU from the Sun
and 12.9 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
8.0 arcsec/hr.
The 1-sigma error in the time of the event is 29 seconds.
The 1-sigma cross-track error in the shadow position is
475 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=187.1 km assuming a 5% albedo -- 9.1 sec chord
Diameter=76.4 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2022/12/09 00:25UT) Object RA Dec mag sep mel Pollux 07:46:43.1 +27:58:08 1.1 24.59 27 34Bet Aur 06:01:12.7 +44:56:50 1.9 2.39 18 38 Aur 06:04:57.2 +42:54:30 6.1 1.87 16 PPM 048832 06:13:10.8 +44:07:40 7.4 0.16 18 PPM 048845 06:13:47.6 +44:06:26 9.6 0.15 18 54598 06:13:25.5 +43:58:24 16.1 18 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 54598, (2022/12/09 00:25UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 24.59 27 34Bet Aur 05:59:31.6 +44:56:51 1.9 2.39 18 38 Aur 06:03:18.2 +42:54:39 6.1 1.87 16 PPM 048832 06:11:30.6 +44:08:05 7.4 0.16 18 PPM 048845 06:12:07.4 +44:06:52 9.6 0.15 18 54598 06:11:45.4 +43:58:49 16.1 18 Positions are for J2000
Event circumstances last updated at 2022/02/11 01:11:00 UT
Marc W. Buie, Southwest Research Institute