Event between (530930) 11WG157 and star GA1320:01910230 with event index number of 2444034
Geocentric closest approach at 2026/04/04 15:12:25 UTC
J2000 position of star is 04:28:18.1 +43:46:51
Equinox of date position of star is 04:29:53.0 +43:49:44
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 148 degrees from the moon.
Moon is 94% illuminated.
TNO apparent brightness V=22.4
TNO is 30.6 AU from the Sun
and 31.1 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 148 seconds.
The 1-sigma cross-track error in the shadow position is
1497 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=211.8 km assuming a 5% albedo -- 9.4 sec chord
Diameter=86.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 1:1
Star training set for 530930, (2026/04/04 15:19UT) Object RA Dec mag sep mel Aldebaran 04:37:25.8 +16:33:36 0.8 27.32 152 3Iot Aur 04:58:42.5 +33:12:18 2.7 12.00 147 PPM 046963 04:19:57.7 +42:12:12 6.1 2.48 150 PPM 047093 04:29:46.0 +43:23:15 7.4 0.46 148 PPM 047086 04:29:24.6 +43:41:56 10.0 0.19 148 PPM 047108 04:31:00.3 +43:55:49 10.9 0.18 147 530930 04:30:09.9 +43:50:14 16.7 147 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 530930, (2026/04/04 15:19UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 27.32 152 3Iot Aur 04:56:59.6 +33:09:58 2.7 12.00 147 PPM 046963 04:18:08.2 +42:08:27 6.1 2.48 150 PPM 047093 04:27:54.7 +43:19:52 7.4 0.46 148 PPM 047086 04:27:33.0 +43:38:32 10.0 0.19 148 PPM 047108 04:29:08.3 +43:52:28 10.9 0.18 147 530930 04:28:18.1 +43:46:51 16.7 148 Positions are for J2000
Event circumstances last updated at 2022/04/14 23:08:51 UT
Marc W. Buie, Southwest Research Institute