Event between (517717) 15KZ120 and star GA1540:02860058 with event index number of 2627659
Geocentric closest approach at 2023/08/01 21:25:05 UTC
J2000 position of star is 03:51:05.9 +64:02:25
Equinox of date position of star is 03:53:08.9 +64:06:26
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=21.3
TNO is 11.8 AU from the Sun
and 12.1 AU from the Earth.
The TNO is moving 17.1
km/sec on the sky relative to the star, or,
7.0 arcsec/hr.
The 1-sigma error in the time of the event is 103 seconds.
The 1-sigma cross-track error in the shadow position is
1732 km.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 3.3 sec chord
Diameter=23.5 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2023/08/01 21:25UT) Object RA Dec mag sep mel Deneb 20:42:14.2 +45:21:56 1.3 56.86 68 Mirphak 03:26:01.1 +49:56:35 1.8 14.62 111 PPM 014505 03:51:41.9 +63:22:02 6.0 0.76 115 PPM 014542 03:55:18.8 +63:33:07 8.0 0.60 116 PPM 014545 03:55:48.4 +63:58:23 8.7 0.31 116 PPM 014509 03:52:00.9 +64:06:42 10.2 0.13 115 517717 03:53:13.4 +64:06:35 16.9 116 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, (2023/08/01 21:25UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 56.86 68 Mirphak 03:24:19.4 +49:51:40 1.8 14.62 111 PPM 014505 03:49:36.4 +63:17:49 6.0 0.76 115 PPM 014542 03:53:12.3 +63:29:01 8.0 0.60 116 PPM 014545 03:53:40.8 +63:54:17 8.7 0.31 116 PPM 014509 03:49:53.6 +64:02:30 10.2 0.13 115 517717 03:51:05.9 +64:02:25 16.9 115 Positions are for J2000
Event circumstances last updated at 2022/10/05 04:24:19 UT
Marc W. Buie, Southwest Research Institute