Event between (524834) 03YL179 and star GA1120:02238445 with event index number of 2217612
Geocentric closest approach at 2021/11/03 17:35:04 UTC
J2000 position of star is 06:33:12.7 +22:35:05
Equinox of date position of star is 06:34:31.6 +22:34:01
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=23.3
TNO is 38.7 AU from the Sun
and 38.2 AU from the Earth.
The TNO is moving 12.2
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 1002 seconds.
The 1-sigma cross-track error in the shadow position is
4755 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 17.1 sec chord
Diameter=85.3 km assuming a 30% albedo -- 7.0 sec chord
Dynamical classification is CLASSICAL
Star training set for 524834, (2021/11/03 17:35UT) Object RA Dec mag sep mel Pollux 07:46:39.0 +27:58:18 1.1 17.16 92 Alhena 06:38:58.4 +16:22:44 1.9 6.28 107 PPM 096308 06:40:24.1 +22:00:35 6.0 1.47 106 PPM 096079 06:31:41.0 +22:31:42 7.2 0.66 108 PPM 096174 06:35:16.3 +22:19:17 8.8 0.30 108 PPM 096145 06:34:27.3 +22:40:46 11.3 0.11 108 524834 06:34:31.8 +22:34:00 16.5 108 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 524834, (2021/11/03 17:35UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 17.16 92 Alhena 06:37:42.8 +16:23:57 1.9 6.28 107 PPM 096308 06:39:05.3 +22:01:51 6.0 1.47 106 PPM 096079 06:30:21.9 +22:32:41 7.2 0.66 108 PPM 096174 06:33:57.3 +22:20:23 8.8 0.30 108 PPM 096145 06:33:08.1 +22:41:50 11.3 0.11 108 524834 06:33:12.7 +22:35:05 16.5 108 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:42:10 UT
Marc W. Buie, Southwest Research Institute