Event between 05LB54 and star GA0660:17406523 with event index number of 1083751
Geocentric closest approach at 2021/04/22 04:41:30 UTC
J2000 position of star is 17:41:57.6 -22:46:26
Equinox of date position of star is 17:43:15.0 -22:46:58
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon.
Moon is 70% illuminated.
TNO apparent brightness V=22.0
TNO is 41.6 AU from the Sun
and 41.0 AU from the Earth.
The TNO is moving 12.4
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 938 seconds.
The 1-sigma cross-track error in the shadow position is
5156 km.
The TNO has an absolute magnitude Hv=5.7
Diameter=430.5 km assuming a 5% albedo -- 34.8 sec chord
Diameter=175.8 km assuming a 30% albedo -- 14.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 05LB54, (2021/04/22 04:41UT) Object RA Dec mag sep mel Antares 16:30:43.0 -26:28:39 0.9 16.88 105 35Eta Oph 17:11:36.1 -15:44:59 2.6 10.25 112 PPM 267109 17:40:01.7 -21:55:24 6.4 1.14 120 PPM 267163 17:43:37.9 -23:21:28 7.7 0.58 121 PPM 267154 17:43:04.9 -22:59:06 9.4 0.21 120 05LB54 17:43:15.0 -22:46:58 15.1 121 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 05LB54, (2021/04/22 04:41UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.88 105 35Eta Oph 17:10:22.7 -15:43:29 2.6 10.25 112 PPM 267109 17:38:44.8 -21:54:46 6.4 1.14 120 PPM 267163 17:42:20.2 -23:20:56 7.7 0.58 121 PPM 267154 17:41:47.3 -22:58:33 9.4 0.21 120 05LB54 17:41:57.6 -22:46:26 15.1 120 Positions are for J2000
Event circumstances last updated at 2021/04/19 23:03:01 UT
Marc W. Buie, Southwest Research Institute