Event between (309239) 07RW10 and star GA0840:00179409 with event index number of 2186058
Geocentric closest approach at 2022/01/14 21:08:19 UTC
J2000 position of star is 02:15:25.1 -04:33:56
Equinox of date position of star is 02:16:31.2 -04:27:52
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 53 degrees from the moon.
Moon is 91% illuminated.
TNO apparent brightness V=21.9
TNO is 31.3 AU from the Sun
and 31.2 AU from the Earth.
The TNO is moving 6.3
km/sec on the sky relative to the star, or,
1.0 arcsec/hr.
The 1-sigma error in the time of the event is 182 seconds.
The 1-sigma cross-track error in the shadow position is
1245 km.
The TNO has an absolute magnitude Hv=6.8
Diameter=264.2 km assuming a 5% albedo -- 42.2 sec chord
Diameter=107.9 km assuming a 30% albedo -- 17.2 sec chord
Dynamical classification is CENTAURR
Star training set for 309239, (2022/01/14 21:08UT) Object RA Dec mag sep mel Aldebaran 04:37:11.3 +16:33:07 0.8 40.62 13 68Omi Cet 02:20:27.7 -02:52:43 2.0 1.86 52 67 Cet 02:18:05.1 -06:19:17 5.5 1.90 54 PPM 184385 02:15:28.2 -05:10:06 8.4 0.75 54 PPM 184395 02:15:59.6 -04:28:34 9.3 0.13 53 309239 02:16:31.6 -04:27:50 16.4 53 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 309239, (2022/01/14 21:08UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 40.62 13 68Omi Cet 02:19:20.8 -02:58:45 2.0 1.86 52 67 Cet 02:16:59.2 -06:25:22 5.5 1.90 54 PPM 184385 02:14:22.0 -05:16:14 8.4 0.75 54 PPM 184395 02:14:53.1 -04:34:41 9.3 0.13 53 309239 02:15:25.1 -04:33:56 16.4 53 Positions are for J2000
Event circumstances last updated at 2021/12/06 01:45:35 UT
Marc W. Buie, Southwest Research Institute