Event between (530930) 11WG157 and star GA1340:02576394 with event index number of 2444295
Geocentric closest approach at 2027/12/01 21:51:02 UTC
J2000 position of star is 04:57:20.5 +45:45:05
Equinox of date position of star is 04:58:58.9 +45:47:04
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 140 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=22.2
TNO is 30.5 AU from the Sun
and 29.6 AU from the Earth.
The TNO is moving 24.6
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 283 seconds.
The 1-sigma cross-track error in the shadow position is
1682 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=211.8 km assuming a 5% albedo -- 8.6 sec chord
Diameter=86.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 1:1
Star training set for 530930, (2027/12/01 21:51UT) Object RA Dec mag sep mel Aldebaran 04:37:31.5 +16:33:48 0.8 29.58 137 34Bet Aur 06:01:34.7 +44:56:49 1.9 10.94 150 PPM 047482 04:56:51.8 +44:06:13 6.0 1.75 140 PPM 047607 05:03:20.9 +45:29:06 7.5 0.76 141 PPM 047471 04:56:20.1 +45:53:58 9.0 0.54 139 PPM 047541 04:59:59.0 +45:53:09 11.0 0.14 140 530930 04:59:23.3 +45:47:34 16.7 140 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, (2027/12/01 21:51UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 29.58 137 34Bet Aur 05:59:31.6 +44:56:51 1.9 10.94 150 PPM 047482 04:54:51.2 +44:03:38 6.0 1.75 140 PPM 047607 05:01:18.3 +45:26:47 7.5 0.76 141 PPM 047471 04:54:17.4 +45:51:22 9.0 0.54 139 PPM 047541 04:57:56.1 +45:50:42 11.0 0.14 140 530930 04:57:20.5 +45:45:05 16.7 140 Positions are for J2000
Event circumstances last updated at 2022/05/18 23:00:51 UT
Marc W. Buie, Southwest Research Institute