Event between (181871) 99CO153 and star GA0960:03840519 with event index number of 2778774
Geocentric closest approach at 2029/06/22 13:56:49 UTC
J2000 position of star is 10:52:06.5 +06:25:43
Equinox of date position of star is 10:53:22.7 +06:17:54
Stellar brightness G=11.6,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 62 degrees from the moon.
Moon is 84% illuminated.
Apparent brightness V=23.8
Object is 43.1 AU from the Sun
and 43.4 AU from the Earth.
Apparent velocity is 14.1
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 731 seconds.
The 1-sigma cross-track error in the shadow position is
5981 km.
The object has an absolute magnitude Hv=7.3
Diameter=206.1 km assuming a 5% albedo -- 14.6 sec chord
Diameter=84.1 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is 7:4EEE
Star training set for 181871, (2029/06/22 13:57UT) Object RA Dec mag sep mel Regulus 10:09:56.4 +11:49:19 1.3 12.13 74 PPM 157166 10:47:37.7 +06:13:02 6.4 1.50 63 PPM 157265 10:52:43.3 +06:36:23 8.5 0.41 62 PPM 157258 10:52:23.0 +06:18:35 9.6 0.31 62 PPM 157297 10:54:08.4 +06:26:27 10.8 0.21 62 181871 10:53:38.4 +06:16:18 11.6 62 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 181871, (2029/06/22 13:57UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 12.13 74 PPM 157166 10:46:05.7 +06:22:23 6.4 1.50 63 PPM 157265 10:51:11.3 +06:45:48 8.5 0.41 62 PPM 157258 10:50:51.1 +06:27:59 9.6 0.31 62 PPM 157297 10:52:36.5 +06:35:52 10.8 0.21 62 181871 10:52:06.5 +06:25:43 11.6 62 Positions are for J2000
Event circumstances last updated at 2024/06/10 02:09:33 UT
Marc W. Buie, Southwest Research Institute