Event between (542258) 13AP183 and star GA1000:03350140 with event index number of 2683948
Geocentric closest approach at 2026/02/27 18:41:18 UTC
J2000 position of star is 09:29:36.8 +11:59:31
Equinox of date position of star is 09:30:55.3 +11:53:07
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 30 degrees from the moon.
Moon is 84% illuminated.
Apparent brightness V=22.6
Object is 50.3 AU from the Sun
and 49.4 AU from the Earth.
Apparent velocity is 24.5
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is
2061 km.
The object has an absolute magnitude Hv=5.6
Diameter=442.6 km assuming a 5% albedo -- 18.3 sec chord
Diameter=180.7 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is 8:3EEEEE
Star training set for 542258, (2026/02/27 18:40UT) Object RA Dec mag sep mel Regulus 10:09:45.8 +11:50:18 1.3 9.48 38 5Xi Leo 09:33:21.2 +11:10:58 5.0 0.90 30 PPM 126495 09:29:58.5 +12:16:12 7.6 0.47 29 PPM 126536 09:32:29.8 +11:44:32 9.0 0.38 30 PPM 126519 09:31:48.7 +12:05:06 11.0 0.28 30 542258 09:31:01.7 +11:52:35 16.6 30 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 542258, (2026/02/27 18:40UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 9.48 38 5Xi Leo 09:31:56.6 +11:17:57 5.0 0.90 30 PPM 126495 09:28:33.4 +12:23:06 7.6 0.47 29 PPM 126536 09:31:05.0 +11:51:31 9.0 0.38 30 PPM 126519 09:30:23.7 +12:12:04 11.0 0.28 30 542258 09:29:36.8 +11:59:31 16.6 30 Positions are for J2000
Event circumstances last updated at 2024/03/04 05:45:00 UT
Marc W. Buie, Southwest Research Institute