Event between (523642) 10SS43 and star GA1320:00451412 with event index number of 2382940
Geocentric closest approach at 2026/12/19 00:17:13 UTC
J2000 position of star is 01:28:33.8 +42:24:17
Equinox of date position of star is 01:29:54.7 +42:31:21
Stellar brightness G=12.0,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 32 degrees from the moon.
Moon is 68% illuminated.
TNO apparent brightness V=21.6
TNO is 37.8 AU from the Sun
and 37.2 AU from the Earth.
The TNO is moving 17.8
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 137 seconds.
The 1-sigma cross-track error in the shadow position is
2456 km.
The TNO has an absolute magnitude Hv=5.7
Diameter=424.6 km assuming a 5% albedo -- 24.2 sec chord
Diameter=173.4 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 523642, (2026/12/19 00:17UT) Object RA Dec mag sep mel Aldebaran 04:37:28.3 +16:33:41 0.8 47.48 52 57Gam1And 02:05:34.0 +42:27:28 2.3 6.52 34 PPM 044004 01:29:01.4 +41:14:25 6.5 1.32 30 PPM 044029 01:30:09.8 +42:24:21 7.3 0.14 32 523642 01:30:09.2 +42:32:37 12.0 32 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 523642, (2026/12/19 00:17UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 47.48 52 57Gam1And 02:03:54.1 +42:19:46 2.3 6.52 34 PPM 044004 01:27:26.7 +41:06:04 6.5 1.32 30 PPM 044029 01:28:34.4 +42:16:02 7.3 0.14 32 523642 01:28:33.8 +42:24:17 12.0 32 Positions are for J2000
Event circumstances last updated at 2022/11/17 02:36:22 UT
Marc W. Buie, Southwest Research Institute