Event between (530930) 11WG157 and star GA1300:01232851 with event index number of 2443586
Geocentric closest approach at 2022/03/20 09:46:00 UTC
J2000 position of star is 03:43:19.1 +41:24:46
Equinox of date position of star is 03:44:49.0 +41:28:55
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=22.4
TNO is 30.7 AU from the Sun
and 31.1 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 83 seconds.
The 1-sigma cross-track error in the shadow position is
1238 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=211.8 km assuming a 5% albedo -- 10.5 sec chord
Diameter=86.5 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 1:1
Star training set for 530930, (2022/03/20 09:46UT) Object RA Dec mag sep mel Aldebaran 04:37:11.9 +16:33:08 0.8 27.36 137 Algol 03:09:37.4 +41:02:23 2.1 6.63 142 41Nu Per 03:46:42.7 +42:38:48 3.8 1.22 136 PPM 046436 03:42:25.8 +41:15:34 7.1 0.50 138 PPM 046480 03:46:04.2 +41:07:58 10.0 0.42 137 PPM 046450 03:43:12.2 +41:32:10 10.1 0.31 137 530930 03:44:49.1 +41:28:55 16.3 137 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 530930, (2022/03/20 09:46UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 27.36 137 Algol 03:08:10.1 +40:57:20 2.1 6.63 142 41Nu Per 03:45:11.6 +42:34:43 3.8 1.22 136 PPM 046436 03:40:56.1 +41:11:22 7.1 0.50 138 PPM 046480 03:44:34.4 +41:03:51 10.0 0.42 137 PPM 046450 03:41:42.2 +41:27:58 10.1 0.31 137 530930 03:43:19.1 +41:24:46 16.3 137 Positions are for J2000
Event circumstances last updated at 2022/03/11 00:15:48 UT
Marc W. Buie, Southwest Research Institute