Event between (145451) 05RM43 and star GA1080:00809962 with event index number of 1032582
Geocentric closest approach at 2021/01/13 13:04:22 UTC
J2000 position of star is 05:04:59.1 +19:02:57
Equinox of date position of star is 05:06:13.0 +19:04:36
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=20.2
TNO is 37.5 AU from the Sun
and 36.7 AU from the Earth.
The TNO is moving 19.6
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 68 seconds.
The 1-sigma cross-track error in the shadow position is
1333 km.
The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 40.5 sec chord
Diameter=324.3 km assuming a 30% albedo -- 16.5 sec chord
Dynamical classification is SCATNEAR
Star training set for 145451, (2021/01/13 13:04UT) Object RA Dec mag sep mel Aldebaran 04:37:07.8 +16:33:00 0.8 7.37 131 Alnath 05:27:37.4 +28:37:24 1.6 10.72 145 104 Tau 05:08:41.7 +18:40:18 5.6 0.71 139 PPM 120582 05:06:46.6 +19:50:02 6.7 0.77 139 PPM 120546 05:04:58.8 +18:44:52 9.7 0.44 138 PPM 120553 05:05:23.7 +19:07:22 10.7 0.20 138 145451 05:06:13.2 +19:04:36 16.9 139 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 145451, (2021/01/13 13:04UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 7.37 131 Alnath 05:26:17.5 +28:36:23 1.6 10.72 145 104 Tau 05:07:27.8 +18:38:43 5.6 0.71 139 PPM 120582 05:05:32.1 +19:48:24 6.7 0.77 139 PPM 120546 05:03:44.8 +18:43:11 9.7 0.44 138 PPM 120553 05:04:09.6 +19:05:41 10.7 0.20 138 145451 05:04:59.1 +19:02:57 16.9 139 Positions are for J2000
Event circumstances last updated at 2020/12/16 22:07:35 UT
Marc W. Buie, Southwest Research Institute