Event between (386723) 09YE7 and star GA0840:00489982 with event index number of 2292233
Geocentric closest approach at 2025/12/13 11:33:33 UTC
J2000 position of star is 04:59:33.7 -05:19:33
Equinox of date position of star is 05:00:44.7 -05:17:29
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 113 degrees from the moon.
Moon is 35% illuminated.
Apparent brightness V=21.7
Object is 50.6 AU from the Sun
and 49.7 AU from the Earth.
Apparent velocity is 26.2
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is
1900 km.
The object has an absolute magnitude Hv=4.6
Diameter=704.7 km assuming a 5% albedo -- 27.4 sec chord
Diameter=287.7 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 386723, (2025/12/13 11:44UT) Object RA Dec mag sep mel Rigel 05:15:47.2 -08:10:25 0.1 4.70 108 67Bet Eri 05:09:07.6 -05:03:17 2.8 2.08 111 PPM 187577 05:02:06.2 -05:43:25 6.3 0.54 112 PPM 187556 05:01:07.7 -05:07:02 8.8 0.19 112 386723 05:00:50.4 -05:17:19 11.6 112 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 386723, (2025/12/13 11:44UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 4.70 108 67Bet Eri 05:07:50.8 -05:05:13 2.8 2.08 111 PPM 187577 05:00:49.8 -05:45:37 6.3 0.54 112 PPM 187556 04:59:50.9 -05:09:16 8.8 0.19 112 386723 04:59:33.7 -05:19:33 11.6 113 Positions are for J2000
Event circumstances last updated at 2024/01/08 05:17:50 UT
Marc W. Buie, Southwest Research Institute