Event between (447178) 05RO43 and star GA0720:04374553 with event index number of 2530662
Geocentric closest approach at 2028/12/15 20:40:12 UTC
J2000 position of star is 09:37:58.4 -16:48:13
Equinox of date position of star is 09:39:07.4 -16:54:50
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 105 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=19.0
Object is 14.2 AU from the Sun
and 13.9 AU from the Earth.
Apparent velocity is 10.0
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 242 seconds.
The 1-sigma cross-track error in the shadow position is
3496 km.
The object has an absolute magnitude Hv=7.2
Diameter=208.9 km assuming a 5% albedo -- 22.3 sec chord
Diameter=85.3 km assuming a 30% albedo -- 9.1 sec chord
Dynamical classification is CENTAURR
Star training set for 447178, (2028/12/15 20:41UT) Object RA Dec mag sep mel Regulus 10:09:54.8 +11:49:28 1.3 29.73 112 Alphard 09:29:00.6 -08:47:08 2.0 8.53 111 PPM 221615 09:31:44.8 -15:42:22 5.6 2.20 107 PPM 221761 09:37:47.4 -17:30:58 8.5 0.69 105 PPM 221794 09:39:27.5 -16:47:04 8.9 0.15 105 447178 09:39:20.7 -16:56:07 15.1 105 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 447178, (2028/12/15 20:41UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 29.73 112 Alphard 09:27:35.2 -08:39:30 2.0 8.53 111 PPM 221615 09:30:22.3 -15:34:40 5.6 2.20 107 PPM 221761 09:36:25.5 -17:23:07 8.5 0.69 105 PPM 221794 09:38:05.2 -16:39:11 8.9 0.15 105 447178 09:37:58.4 -16:48:13 15.1 105 Positions are for J2000
Event circumstances last updated at 2024/04/19 00:46:54 UT
Marc W. Buie, Southwest Research Institute