Event between (609222) 04VV131 and star GA1100:00504822 with event index number of 2789085
Geocentric closest approach at 2025/11/22 15:06:50 UTC
J2000 position of star is 03:56:39.9 +20:45:54
Equinox of date position of star is 03:57:57.7 +20:49:40
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon.
Moon is 5% illuminated.
TNO apparent brightness V=23.2
TNO is 47.2 AU from the Sun
and 46.2 AU from the Earth.
The TNO is moving 26.0
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 210 seconds.
The 1-sigma cross-track error in the shadow position is
2441 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=296.5 km assuming a 5% albedo -- 11.4 sec chord
Diameter=121.0 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 609222, (2025/11/22 15:07UT) Object RA Dec mag sep mel Aldebaran 04:37:24.6 +16:33:34 0.8 10.22 161 44Zet Per 03:55:46.0 +31:57:30 2.8 11.13 156 32 Tau 03:58:24.1 +22:33:02 5.6 1.71 156 PPM 093159 04:02:11.5 +20:29:04 8.4 1.00 156 PPM 093078 03:57:37.5 +20:50:43 8.8 0.13 155 609222 03:58:10.8 +20:50:18 16.5 155 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 609222, (2025/11/22 15:07UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 10.22 161 44Zet Per 03:54:07.9 +31:53:01 2.8 11.13 156 32 Tau 03:56:52.2 +22:28:38 5.6 1.71 156 PPM 093159 04:00:40.7 +20:24:47 8.4 1.00 156 PPM 093078 03:56:06.6 +20:46:18 8.8 0.13 155 609222 03:56:39.9 +20:45:54 16.5 155 Positions are for J2000
Event circumstances last updated at 2022/03/03 00:53:06 UT
Marc W. Buie, Southwest Research Institute