Event between (613469) 06QJ181 and star GA1000:02509956 with event index number of 2809899
Geocentric closest approach at 2025/09/15 04:14:24 UTC
J2000 position of star is 06:56:57.1 +11:42:14
Equinox of date position of star is 06:58:11.8 +11:40:22
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 20 degrees from the moon.
Moon is 42% illuminated.
TNO apparent brightness V=22.3
TNO is 31.7 AU from the Sun
and 32.0 AU from the Earth.
The TNO is moving 18.3
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is
3162 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 12.6 sec chord
Diameter=94.4 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 3:1EE+3:1II
Star training set for 613469, (2025/09/15 04:14UT) Object RA Dec mag sep mel Betelgeuse 05:56:33.9 +07:24:35 0.4 15.82 21 Alhena 06:39:11.8 +16:22:30 1.9 6.62 14 38 Gem 06:56:05.6 +13:08:35 5.0 1.58 19 PPM 123306 06:58:51.6 +11:52:17 6.8 0.23 20 PPM 123283 06:58:05.0 +11:42:30 8.6 0.08 20 613469 06:58:23.0 +11:40:05 16.1 20 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 613469, (2025/09/15 04:14UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 15.82 21 Alhena 06:37:42.8 +16:23:56 1.9 6.62 14 38 Gem 06:54:38.7 +13:10:38 5.0 1.58 19 PPM 123306 06:57:25.6 +11:54:27 6.8 0.23 20 PPM 123283 06:56:39.1 +11:44:38 8.6 0.08 20 613469 06:56:57.1 +11:42:14 16.1 20 Positions are for J2000
Event circumstances last updated at 2022/05/04 22:57:15 UT
Marc W. Buie, Southwest Research Institute