Event between (386968) 12BR61 and star GA0640:33337070 with event index number of 2216598
Geocentric closest approach at 2028/05/21 18:28:15 UTC
J2000 position of star is 18:37:13.4 -25:11:55
Equinox of date position of star is 18:38:42.7 -25:10:35
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 112 degrees from the moon.
Moon is 7% illuminated.
Apparent brightness V=21.8
Object is 17.5 AU from the Sun
and 16.7 AU from the Earth.
Apparent velocity is 16.2
km/sec on the sky relative to the star, or,
4.8 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
616 km.
The object has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 5.1 sec chord
Diameter=33.8 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 386968, (2028/05/21 18:30UT) Object RA Dec mag sep mel Antares 16:31:09.2 -26:29:33 0.9 28.72 141 Nunki 18:57:01.4 -26:15:31 2.0 4.21 108 PPM 268694 18:40:14.3 -23:28:41 6.3 1.72 111 PPM 268687 18:40:00.3 -25:23:42 8.1 0.32 112 PPM 268645 18:38:21.2 -25:17:16 9.0 0.18 112 386968 18:38:58.3 -25:10:21 16.8 112 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 386968, (2028/05/21 18:30UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 28.72 141 Nunki 18:55:15.9 -26:17:49 2.0 4.21 108 PPM 268694 18:38:30.7 -23:30:18 6.3 1.72 111 PPM 268687 18:38:15.3 -25:25:18 8.1 0.32 112 PPM 268645 18:36:36.2 -25:18:48 9.0 0.18 112 386968 18:37:13.4 -25:11:55 16.8 112 Positions are for J2000
Event circumstances last updated at 2024/03/07 04:24:25 UT
Marc W. Buie, Southwest Research Institute