Event between (531015) 12BX154 and star GA0880:03956479 with event index number of 2439496
Geocentric closest approach at 2026/03/24 15:13:08 UTC
J2000 position of star is 11:38:15.3 -00:28:42
Equinox of date position of star is 11:39:24.0 -00:36:08
Stellar brightness G=10.6,
use SENSEUP=4 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 97 degrees from the moon.
Moon is 37% illuminated.
TNO apparent brightness V=23.0
TNO is 46.1 AU from the Sun
and 45.1 AU from the Earth.
The TNO is moving 24.9
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 320 seconds.
The 1-sigma cross-track error in the shadow position is
5898 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 12.8 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is SCATNEAR
Star training set for 531015, (2026/03/24 15:27UT) Object RA Dec mag sep mel Regulus 10:09:46.0 +11:50:17 1.3 25.55 71 Denebola 11:50:23.9 +14:25:32 2.1 15.28 92 91Ups Leo 11:38:17.5 -00:58:08 4.3 0.48 97 PPM 178570 11:42:16.5 -00:49:12 7.8 0.70 97 PPM 178554 11:39:35.9 -00:37:25 10.0 0.00 97 531015 11:39:35.9 -00:37:25 10.6 97 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 531015, (2026/03/24 15:27UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 25.55 71 Denebola 11:49:02.8 +14:34:17 2.1 15.28 92 91Ups Leo 11:36:56.9 -00:49:25 4.3 0.48 97 PPM 178570 11:40:55.9 -00:40:28 7.8 0.70 97 PPM 178554 11:38:15.3 -00:28:41 10.0 0.00 97 531015 11:38:15.3 -00:28:42 10.6 97 Positions are for J2000
Event circumstances last updated at 2022/05/04 23:29:41 UT
Marc W. Buie, Southwest Research Institute