Event between (517717) 15KZ120 and star GA1680:01222696 with event index number of 1172097
Geocentric closest approach at 2021/06/05 20:49:21 UTC
J2000 position of star is 23:16:15.4 +78:31:39
Equinox of date position of star is 23:16:54.2 +78:38:36
Stellar brightness G=13.6,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 74 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=20.4
TNO is 9.4 AU from the Sun
and 9.8 AU from the Earth.
The TNO is moving 31.0
km/sec on the sky relative to the star, or,
15.7 arcsec/hr.
The 1-sigma error in the time of the event is 18 seconds.
The 1-sigma cross-track error in the shadow position is
757 km.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 1.9 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2021/06/05 20:49UT) Object RA Dec mag sep mel Deneb 20:42:09.8 +45:21:28 1.3 36.33 75 PPM 000431 02:59:08.3 +89:21:13 2.0 11.00 83 35Gam Cep 23:40:14.7 +77:45:08 3.2 1.49 73 PPM 011561 23:16:13.2 +79:20:59 8.0 0.71 75 PPM 011539 23:13:21.2 +78:10:54 9.0 0.50 74 PPM 011538 23:13:18.2 +78:34:06 10.2 0.19 74 517717 23:16:54.6 +78:38:40 13.6 74 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 517717, (2021/06/05 20:49UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 36.33 75 PPM 000431 02:31:52.9 +89:15:50 2.0 11.00 83 35Gam Cep 23:39:20.4 +77:38:00 3.2 1.49 73 PPM 011561 23:15:36.3 +79:13:58 8.0 0.71 75 PPM 011539 23:12:43.0 +78:03:53 9.0 0.50 74 PPM 011538 23:12:41.0 +78:27:05 10.2 0.19 74 517717 23:16:15.4 +78:31:39 13.6 74 Positions are for J2000
Event circumstances last updated at 2021/03/11 01:31:06 UT
Marc W. Buie, Southwest Research Institute