Event between 12UD178 and star GA1140:01143279 with event index number of 2141706
Geocentric closest approach at 2022/10/01 19:59:45 UTC
J2000 position of star is 05:21:17.7 +25:07:03
Equinox of date position of star is 05:22:38.5 +25:08:15
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 178 degrees from the moon.
Moon is 37% illuminated.
TNO apparent brightness V=23.1
TNO is 36.6 AU from the Sun
and 36.3 AU from the Earth.
The TNO is moving 4.2
km/sec on the sky relative to the star, or,
0.6 arcsec/hr.
The 1-sigma error in the time of the event is 831 seconds.
The 1-sigma cross-track error in the shadow position is
1548 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 48.5 sec chord
Diameter=83.4 km assuming a 30% albedo -- 19.8 sec chord
Dynamical classification is 5:2EEE
Star training set for 12UD178, (2022/10/01 20:22UT) Object RA Dec mag sep mel Aldebaran 04:37:13.7 +16:33:12 0.8 13.65 164 Alnath 05:27:43.9 +28:37:28 1.6 3.66 178 PPM 094294 05:22:25.2 +27:58:41 6.3 2.84 177 PPM 094241 05:18:55.0 +24:01:56 7.9 1.40 176 PPM 094280 05:21:42.0 +25:11:33 8.6 0.23 177 12UD178 05:22:41.7 +25:08:18 15.4 178 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 12UD178, (2022/10/01 20:22UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 13.65 164 Alnath 05:26:17.6 +28:36:23 1.6 3.66 178 PPM 094294 05:20:59.3 +27:57:25 6.3 2.84 177 PPM 094241 05:17:31.7 +24:00:34 7.9 1.40 176 PPM 094280 05:20:18.0 +25:10:16 8.6 0.23 177 12UD178 05:21:17.7 +25:07:03 15.4 177 Positions are for J2000
Event circumstances last updated at 2021/11/16 00:38:02 UT
Marc W. Buie, Southwest Research Institute