Event between (544977) 14WZ535 and star GA0860:03621076 with event index number of 1708620
Geocentric closest approach at 2021/05/13 01:59:18 UTC
J2000 position of star is 08:51:09.5 -02:40:58
Equinox of date position of star is 08:52:13.8 -02:45:48
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 71 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.8
TNO is 42.5 AU from the Sun
and 42.6 AU from the Earth.
The TNO is moving 12.3
km/sec on the sky relative to the star, or,
1.4 arcsec/hr.
The 1-sigma error in the time of the event is 198 seconds.
The 1-sigma cross-track error in the shadow position is
2764 km.
The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 26.9 sec chord
Diameter=135.2 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is SCATEXTD
Star training set for 544977, (2021/05/13 02:03UT) Object RA Dec mag sep mel Regulus 10:09:30.5 +11:51:43 1.3 24.14 83 Alphard 09:28:38.2 -08:45:08 2.0 10.85 81 14 Hya 08:50:26.1 -03:31:25 5.3 0.88 71 PPM 191746 08:50:55.0 -03:15:01 8.2 0.59 71 PPM 177621 08:51:40.1 -02:55:44 9.4 0.22 71 544977 08:52:14.2 -02:45:50 16.9 71 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 544977, (2021/05/13 02:03UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 24.14 83 Alphard 09:27:35.2 -08:39:30 2.0 10.85 81 14 Hya 08:49:21.7 -03:26:35 5.3 0.88 71 PPM 191746 08:49:50.5 -03:10:11 8.2 0.59 71 PPM 177621 08:50:35.4 -02:50:54 9.4 0.22 71 544977 08:51:09.5 -02:40:58 16.9 71 Positions are for J2000
Event circumstances last updated at 2021/03/25 23:07:11 UT
Marc W. Buie, Southwest Research Institute