Event between 04KF19 and star GA0660:07839714 with event index number of 1077192
Geocentric closest approach at 2021/05/19 02:57:31 UTC
J2000 position of star is 16:44:50.8 -22:25:27
Equinox of date position of star is 16:46:07.4 -22:27:43
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 112 degrees from the moon.
Moon is 43% illuminated.
TNO apparent brightness V=23.3
TNO is 41.3 AU from the Sun
and 40.4 AU from the Earth.
The TNO is moving 23.6
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 483 seconds.
The 1-sigma cross-track error in the shadow position is
2159 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 9.6 sec chord
Diameter=92.7 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 04KF19, (2021/05/19 02:57UT) Object RA Dec mag sep mel Antares 16:30:43.3 -26:28:39 0.9 5.33 110 23Tau Sco 16:37:13.0 -28:15:31 2.8 6.14 112 PPM 232040 16:43:09.3 -19:57:49 5.8 2.59 111 PPM 265879 16:45:34.6 -22:33:43 7.9 0.16 112 PPM 265900 16:46:17.4 -22:27:46 9.6 0.04 112 04KF19 16:46:07.7 -22:27:44 16.9 113 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 04KF19, (2021/05/19 02:57UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 5.33 110 23Tau Sco 16:35:52.9 -28:12:58 2.8 6.14 112 PPM 232040 16:41:53.8 -19:55:27 5.8 2.59 111 PPM 265879 16:44:17.7 -22:31:25 7.9 0.16 112 PPM 265900 16:45:00.4 -22:25:30 9.6 0.04 112 04KF19 16:44:50.8 -22:25:27 16.9 112 Positions are for J2000
Event circumstances last updated at 2021/04/18 22:56:05 UT
Marc W. Buie, Southwest Research Institute