Event between (577627) 13HZ156 and star GA0880:04790206 with event index number of 2524606
Geocentric closest approach at 2026/04/24 18:13:49 UTC
J2000 position of star is 16:25:06.5 -00:39:00
Equinox of date position of star is 16:26:14.6 -00:41:57
Stellar brightness G=14.1,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 109 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=23.1
TNO is 38.3 AU from the Sun
and 37.5 AU from the Earth.
The TNO is moving 21.1
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 427 seconds.
The 1-sigma cross-track error in the shadow position is
3689 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=217.8 km assuming a 5% albedo -- 10.3 sec chord
Diameter=88.9 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 577627, (2026/04/24 18:14UT) Object RA Dec mag sep mel Antares 16:31:01.5 -26:29:17 0.9 25.80 117 1Del Oph 16:15:43.6 -03:45:36 2.7 4.06 108 12 Oph 16:37:44.4 -02:22:42 5.8 3.28 113 PPM 179797 16:24:27.3 -00:54:57 8.0 0.54 109 PPM 179800 16:24:33.4 -00:37:30 9.3 0.48 109 PPM 179814 16:27:49.9 -00:45:49 10.8 0.35 110 577627 16:26:27.8 -00:42:31 14.1 110 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 577627, (2026/04/24 18:14UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 25.80 117 1Del Oph 16:14:20.7 -03:41:43 2.7 4.06 108 12 Oph 16:36:22.1 -02:19:35 5.8 3.28 113 PPM 179797 16:23:05.9 -00:51:22 8.0 0.54 109 PPM 179800 16:23:12.1 -00:33:56 9.3 0.48 109 PPM 179814 16:26:28.6 -00:42:21 10.8 0.35 110 577627 16:25:06.5 -00:39:00 14.1 109 Positions are for J2000
Event circumstances last updated at 2022/01/12 23:39:58 UT
Marc W. Buie, Southwest Research Institute