Event between 12UD178 and star GA1140:01133132 with event index number of 2141784
Geocentric closest approach at 2024/04/07 12:57:05 UTC
J2000 position of star is 05:20:22.1 +25:27:29
Equinox of date position of star is 05:21:43.1 +25:28:43
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 80 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=23.2
TNO is 37.1 AU from the Sun
and 37.5 AU from the Earth.
The TNO is moving 18.4
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 242 seconds.
The 1-sigma cross-track error in the shadow position is
1805 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 11.1 sec chord
Diameter=83.4 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is 5:2EEE
Star training set for 12UD178, (2024/04/07 12:49UT) Object RA Dec mag sep mel Aldebaran 04:37:19.0 +16:33:22 0.8 13.69 69 Alnath 05:27:49.7 +28:37:33 1.6 3.41 82 PPM 094294 05:22:30.9 +27:58:46 6.3 2.50 81 PPM 094241 05:19:00.6 +24:02:02 7.9 1.59 79 PPM 094280 05:21:47.6 +25:11:38 8.6 0.29 80 12UD178 05:21:52.0 +25:28:51 15.1 81 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, (2024/04/07 12:49UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 13.69 69 Alnath 05:26:17.6 +28:36:23 1.6 3.41 82 PPM 094294 05:20:59.3 +27:57:25 6.3 2.50 81 PPM 094241 05:17:31.7 +24:00:34 7.9 1.59 79 PPM 094280 05:20:18.0 +25:10:16 8.6 0.29 80 12UD178 05:20:22.1 +25:27:29 15.1 80 Positions are for J2000
Event circumstances last updated at 2021/11/16 00:48:57 UT
Marc W. Buie, Southwest Research Institute