Event between (612141) 99XY143 and star GA1080:02826891 with event index number of 2806172
Geocentric closest approach at 2025/01/04 23:10:33 UTC
J2000 position of star is 07:12:19.9 +18:30:28
Equinox of date position of star is 07:13:41.0 +18:28:03
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon.
Moon is 28% illuminated.
Apparent brightness V=22.7
Object is 45.2 AU from the Sun
and 44.2 AU from the Earth.
Apparent velocity is 26.0
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 288 seconds.
The 1-sigma cross-track error in the shadow position is
2357 km.
The object has an absolute magnitude Hv=6.2
Diameter=348.3 km assuming a 5% albedo -- 13.4 sec chord
Diameter=142.2 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is CLASSICAL
Star training set for 612141, (2025/01/04 23:11UT) Object RA Dec mag sep mel Pollux 07:46:50.7 +27:57:49 1.1 12.15 125 Alhena 06:39:09.4 +16:22:33 1.9 8.52 110 51 Gem 07:14:48.4 +16:06:52 5.0 2.36 119 PPM 123707 07:14:42.3 +18:52:37 7.8 0.47 119 PPM 123688 07:13:47.6 +18:36:36 9.3 0.15 119 612141 07:13:47.4 +18:27:51 15.7 119 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 612141, (2025/01/04 23:11UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 12.15 125 Alhena 06:37:42.8 +16:23:56 1.9 8.52 110 51 Gem 07:13:22.3 +16:09:31 5.0 2.36 119 PPM 123707 07:13:14.5 +18:55:16 7.8 0.47 119 PPM 123688 07:12:20.0 +18:39:13 9.3 0.15 119 612141 07:12:19.9 +18:30:28 15.7 119 Positions are for J2000
Event circumstances last updated at 2023/03/04 04:03:56 UT
Marc W. Buie, Southwest Research Institute