Event between (531017) 12BA155 and star GA0800:04077256 with event index number of 2439607
Geocentric closest approach at 2027/12/10 20:15:49 UTC
J2000 position of star is 11:14:04.5 -08:16:49
Equinox of date position of star is 11:15:18.8 -08:24:50
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 131 degrees from the moon.
Moon is 90% illuminated.
Apparent brightness V=21.9
Object is 36.8 AU from the Sun
and 36.9 AU from the Earth.
Apparent velocity is 9.6
km/sec on the sky relative to the star, or,
1.3 arcsec/hr.
The 1-sigma error in the time of the event is 237 seconds.
The 1-sigma cross-track error in the shadow position is
1887 km.
The object has an absolute magnitude Hv=6.1
Diameter=354.8 km assuming a 5% albedo -- 38.3 sec chord
Diameter=144.9 km assuming a 30% albedo -- 15.7 sec chord
Dynamical classification is 5:2EEE
Star training set for 531017, (2027/12/10 20:18UT) Object RA Dec mag sep mel Regulus 10:09:51.5 +11:49:46 1.3 26.01 108 4Gam Crv 12:17:14.9 -17:41:49 2.6 17.65 148 PPM 194312 11:18:23.2 -07:17:15 6.1 1.35 131 PPM 194258 11:15:37.7 -08:28:50 7.1 0.06 131 531017 11:15:29.3 -08:25:58 16.8 131 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, (2027/12/10 20:18UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 26.01 108 4Gam Crv 12:15:48.1 -17:32:30 2.6 17.65 148 PPM 194312 11:16:58.2 -07:08:05 6.1 1.35 131 PPM 194258 11:14:12.9 -08:19:40 7.1 0.06 131 531017 11:14:04.5 -08:16:49 16.8 131 Positions are for J2000
Event circumstances last updated at 2024/06/23 21:27:34 UT
Marc W. Buie, Southwest Research Institute