Event between (531017) 12BA155 and star GA0840:03949290 with event index number of 2439560
Geocentric closest approach at 2024/04/01 01:21:32 UTC
J2000 position of star is 10:39:37.4 -05:52:40
Equinox of date position of star is 10:40:50.6 -06:00:16
Stellar brightness G=14.0,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 103 degrees from the moon.
Moon is 62% illuminated.
Apparent brightness V=21.9
Object is 37.6 AU from the Sun
and 36.8 AU from the Earth.
Apparent velocity is 21.5
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is
1443 km.
The object has an absolute magnitude Hv=6.1
Diameter=354.8 km assuming a 5% albedo -- 17.0 sec chord
Diameter=144.9 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 5:2EEE
Star training set for 531017, (2024/04/01 01:26UT) Object RA Dec mag sep mel Regulus 10:09:39.7 +11:50:52 1.3 19.46 119 Alphard 09:28:46.8 -08:45:54 2.0 18.08 116 PPM 193503 10:32:11.6 -07:45:45 6.2 2.78 104 PPM 193656 10:40:30.0 -06:20:33 8.2 0.35 103 PPM 193653 10:40:22.5 -06:00:32 8.9 0.12 103 531017 10:40:50.8 -06:00:17 14.0 103 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 531017, (2024/04/01 01:26UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 19.46 119 Alphard 09:27:35.2 -08:39:30 2.0 18.08 116 PPM 193503 10:30:58.7 -07:38:15 6.2 2.78 104 PPM 193656 10:39:16.6 -06:12:56 8.2 0.35 103 PPM 193653 10:39:09.1 -05:52:55 8.9 0.12 103 531017 10:39:37.4 -05:52:40 14.0 103 Positions are for J2000
Event circumstances last updated at 2024/03/03 05:38:31 UT
Marc W. Buie, Southwest Research Institute