Event between 10TV191 and star GA1020:01038232 with event index number of 2105321
Geocentric closest approach at 2025/08/19 12:59:03 UTC
J2000 position of star is 05:45:53.4 +13:11:38
Equinox of date position of star is 05:47:08.0 +13:12:04
Stellar brightness G=16.6,
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 16% illuminated.
TNO apparent brightness V=22.9
TNO is 27.7 AU from the Sun
and 28.2 AU from the Earth.
The TNO is moving 20.4
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 250 seconds.
The 1-sigma cross-track error in the shadow position is
1658 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.8 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
Star training set for 10TV191, (2025/08/19 12:44UT) Object RA Dec mag sep mel Betelgeuse 05:56:33.6 +07:24:35 0.4 6.22 24 Bellatrix 05:26:30.4 +06:22:15 1.6 8.54 29 133 Tau 05:49:10.2 +13:54:25 5.0 0.83 20 PPM 121351 05:46:27.9 +12:53:50 6.8 0.37 21 PPM 121365 05:47:04.1 +13:11:51 10.3 0.07 20 10TV191 05:47:20.3 +13:12:08 16.6 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 10TV191, (2025/08/19 12:44UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 6.22 24 Bellatrix 05:25:07.8 +06:20:58 1.6 8.54 29 133 Tau 05:47:42.9 +13:53:59 5.0 0.83 20 PPM 121351 05:45:01.3 +12:53:18 6.8 0.37 21 PPM 121365 05:45:37.2 +13:11:20 10.3 0.07 20 10TV191 05:45:53.4 +13:11:38 16.6 20 Positions are for J2000
Event circumstances last updated at 2022/01/04 23:20:41 UT
Marc W. Buie, Southwest Research Institute