Event between (495190) 12VS113 and star GA0840:00321149 with event index number of 2218421
Geocentric closest approach at 2025/11/10 20:00:08 UTC
J2000 position of star is 03:54:57.8 -05:09:46
Equinox of date position of star is 03:56:02.9 -05:05:59
Stellar brightness G=12.5,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 70 degrees from the moon.
Moon is 65% illuminated.
TNO apparent brightness V=23.1
TNO is 39.0 AU from the Sun
and 38.1 AU from the Earth.
The TNO is moving 24.7
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 260 seconds.
The 1-sigma cross-track error in the shadow position is
3006 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=222.9 km assuming a 5% albedo -- 9.0 sec chord
Diameter=91.0 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 495190, (2025/11/10 20:02UT) Object RA Dec mag sep mel Rigel 05:15:46.9 -08:10:25 0.1 19.99 55 Menkar 03:03:38.1 +04:11:23 2.5 16.08 78 30 Eri 03:53:58.4 -05:17:09 5.6 0.60 71 PPM 186336 03:56:26.3 -04:54:01 8.1 0.19 70 PPM 186334 03:56:17.4 -05:08:11 9.5 0.05 70 495190 03:56:14.7 -05:05:18 12.5 70 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 495190, (2025/11/10 20:02UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 19.99 55 Menkar 03:02:16.8 +04:05:21 2.5 16.08 78 30 Eri 03:52:41.7 -05:21:41 5.6 0.60 71 PPM 186336 03:55:09.3 -04:58:29 8.1 0.19 70 PPM 186334 03:55:00.5 -05:12:39 9.5 0.05 70 495190 03:54:57.8 -05:09:46 12.5 70 Positions are for J2000
Event circumstances last updated at 2021/11/28 00:36:58 UT
Marc W. Buie, Southwest Research Institute