Event between (127546) 02XU93 and star GA1560:02972232 with event index number of 1099232
Geocentric closest approach at 2021/12/29 23:31:53 UTC
J2000 position of star is 15:53:40.1 +67:06:49
Equinox of date position of star is 15:53:48.5 +67:02:59
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 83 degrees from the moon.
Moon is 20% illuminated.
TNO apparent brightness V=22.3
TNO is 25.6 AU from the Sun
and 25.5 AU from the Earth.
The TNO is moving 29.4
km/sec on the sky relative to the star, or,
5.7 arcsec/hr.
The 1-sigma error in the time of the event is 141 seconds.
The 1-sigma cross-track error in the shadow position is
5485 km.
The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 5.1 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 127546, (2021/12/29 23:32UT) Object RA Dec mag sep mel Vega 18:37:41.0 +38:48:19 0.0 36.24 75 Kochab 14:50:39.8 +74:03:56 2.1 8.71 89 PPM 019733 16:06:23.9 +67:45:08 5.4 1.40 84 PPM 019616 15:50:51.7 +66:21:46 8.2 0.75 82 PPM 019646 15:55:15.0 +66:30:07 9.5 0.57 83 PPM 019652 15:56:00.1 +66:54:55 10.6 0.25 83 127546 15:53:48.6 +67:02:58 16.8 83 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 127546, (2021/12/29 23:32UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 36.24 75 Kochab 14:50:42.2 +74:09:20 2.1 8.71 89 PPM 019733 16:06:19.6 +67:48:38 5.4 1.40 84 PPM 019616 15:50:40.9 +66:25:42 8.2 0.75 82 PPM 019646 15:55:05.3 +66:33:55 9.5 0.57 83 PPM 019652 15:55:51.6 +66:58:42 10.6 0.25 83 127546 15:53:40.1 +67:06:49 16.8 83 Positions are for J2000
Event circumstances last updated at 2021/12/04 02:02:29 UT
Marc W. Buie, Southwest Research Institute