Event between (517717) 15KZ120 and star GA1360:01866368 with event index number of 2628229
Geocentric closest approach at 2025/12/16 20:34:07 UTC
J2000 position of star is 03:52:54.4 +47:48:47
Equinox of date position of star is 03:54:33.3 +47:52:46
Stellar brightness G=14.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 153 degrees from the moon.
Moon is 9% illuminated.
TNO apparent brightness V=21.9
TNO is 14.9 AU from the Sun
and 14.0 AU from the Earth.
The TNO is moving 30.4
km/sec on the sky relative to the star, or,
10.8 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is
3584 km.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 1.8 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2025/12/16 20:34UT) Object RA Dec mag sep mel Aldebaran 04:37:24.8 +16:33:34 0.8 32.53 158 Mirphak 03:26:11.4 +49:57:05 1.8 5.13 152 PPM 046639 03:57:51.0 +47:56:43 5.2 0.52 152 PPM 046626 03:56:34.5 +47:43:46 8.5 0.34 153 PPM 046603 03:54:30.5 +47:42:50 9.4 0.18 153 517717 03:54:46.9 +47:53:19 14.6 152 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, (2025/12/16 20:34UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 32.53 158 Mirphak 03:24:19.4 +49:51:40 1.8 5.13 152 PPM 046639 03:55:58.2 +47:52:16 5.2 0.52 152 PPM 046626 03:54:42.0 +47:39:17 8.5 0.34 153 PPM 046603 03:52:38.2 +47:38:18 9.4 0.18 153 517717 03:52:54.4 +47:48:47 14.6 153 Positions are for J2000
Event circumstances last updated at 2022/10/30 02:03:38 UT
Marc W. Buie, Southwest Research Institute