Event between (517717) 15KZ120 and star GA1660:01487728 with event index number of 1172089
Geocentric closest approach at 2021/05/26 15:43:34 UTC
J2000 position of star is 23:06:08.9 +77:33:17
Equinox of date position of star is 23:06:44.2 +77:40:10
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 113 degrees from the moon.
Moon is 100% 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 33.0
km/sec on the sky relative to the star, or,
16.7 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
726 km.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 1.7 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2021/05/26 15:44UT) Object RA Dec mag sep mel Deneb 20:42:09.7 +45:21:28 1.3 35.29 88 PPM 000431 02:59:05.9 +89:21:13 2.0 12.00 112 35Gam Cep 23:40:14.6 +77:45:07 3.2 1.78 115 PPM 011564 23:16:22.8 +76:54:15 8.2 0.93 114 PPM 011502 23:07:40.6 +78:00:56 9.5 0.35 113 PPM 011476 23:03:56.9 +77:52:23 10.6 0.25 113 517717 23:06:44.5 +77:40:14 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 517717, (2021/05/26 15:44UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 35.29 88 PPM 000431 02:31:52.9 +89:15:50 2.0 12.00 112 35Gam Cep 23:39:20.4 +77:38:00 3.2 1.78 115 PPM 011564 23:15:40.3 +76:47:14 8.2 0.93 114 PPM 011502 23:07:05.3 +77:53:59 9.5 0.35 113 PPM 011476 23:03:23.3 +77:45:27 10.6 0.25 113 517717 23:06:08.9 +77:33:17 16.9 113 Positions are for J2000
Event circumstances last updated at 2021/03/11 01:30:55 UT
Marc W. Buie, Southwest Research Institute