Event between (600217) 11QY100 and star GA0880:03022772 with event index number of 2730913
Geocentric closest approach at 2025/11/28 23:01:01 UTC
J2000 position of star is 07:29:41.8 -01:39:33
Equinox of date position of star is 07:30:48.4 -01:42:21
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 126 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=21.5
TNO is 20.6 AU from the Sun
and 20.0 AU from the Earth.
The TNO is moving 13.7
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 154 seconds.
The 1-sigma cross-track error in the shadow position is
916 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=137.4 km assuming a 5% albedo -- 10.0 sec chord
Diameter=56.1 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CENTAURR
Star training set for 600217, (2025/11/28 23:01UT) Object RA Dec mag sep mel Sirius 06:46:17.5 -16:45:07 -1.5 18.63 112 Alhena 06:39:12.5 +16:22:30 1.9 22.15 114 PPM 190211 07:23:36.5 -03:01:49 6.5 2.27 124 PPM 176970 07:32:17.6 -02:13:16 7.5 0.60 126 PPM 176962 07:31:12.6 -01:33:14 9.7 0.17 126 PPM 176959 07:30:59.5 -01:45:52 10.9 0.05 126 600217 07:31:00.5 -01:42:52 16.6 126 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 600217, (2025/11/28 23:01UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:24 -1.5 18.63 112 Alhena 06:37:42.8 +16:23:57 1.9 22.15 114 PPM 190211 07:22:18.6 -02:58:45 6.5 2.27 124 PPM 176970 07:30:59.1 -02:09:54 7.5 0.60 126 PPM 176962 07:29:53.7 -01:29:54 9.7 0.17 126 PPM 176959 07:29:40.8 -01:42:33 10.9 0.05 126 600217 07:29:41.8 -01:39:33 16.6 126 Positions are for J2000
Event circumstances last updated at 2021/12/02 02:46:12 UT
Marc W. Buie, Southwest Research Institute